Allow direct navigation to static analysis checker documentation through SARIF exports

[aaron.ballman]

Summary

The static analysis checkers are mostly listed on two pages, one for alpha checks and one for released checks (there are also a considerable number of undocumented analyzer checkers). This patch adds anchors to all of the documented checks so that you can directly link to a check by a stable name. This is useful because the SARIF file format has a field for specifying a URI to documentation for a rule and some viewers, like CodeSonar, make use of this information.

This patch exposes those anchors through the SARIF exporter, which requires an automated way to determine the check URIs. Checkers.td now requires each checker to be annotated with an extensible list of documentation kinds (listed in CheckerBase.td) that map to physical URI paths on the static analyzer web page if the check has documentation (mapping is done by the table generator), which is exposed via the CHECKER macro. When exporting to SARIF, the checker name itself is used as the anchor target on the page (and I verified that checker names, including dots and dashes, will be valid anchors) and the corresponding edits were made to each HTML file to add the anchors.

This likely has some overlap with D54429, so I've added those reviewers and author to this review.

[Szelethus]

Thank you so much for working on this! The lack of a proper documentation is indeed a weak points of the project.

I guess it'd be better to generate the entire URI in the tblgen file, and also allow plugins to register their own through CheckerRegistry. Sarif lacking the support for them is one thing, but adding a new field to the Checker class in CheckerBase.td I think should be accompanied by extending CheckerRegistry::CheckerInfo and CheckerRegistry::getChecker.

While I dislike the use of <a id="some.Checker"></a>, until Sphinx documentation becomes a thing, I guess we can't do much about it.

But the overall direction of this patch is great.

lib/StaticAnalyzer/Core/SarifDiagnostics.cpp

270–275

As per usual, this won't handle plugin checkers, but the solution is in an arms reach -- in the last couple months, I changed a lot around checker registration, and once things settle down a bit.

One idea is to store the list of registered checkers (now, in this case, registered means that the analyzer even knows about its existence, not that it's enabled) in AnalyzerOptions, however it'd force you to put an extra parameter to almost all functions here. What do you think?

284–286

Why not do this in ClangSACheckersEmitter.cpp?

utils/TableGen/ClangSACheckersEmitter.cpp

90–91

Cheers!

[aaron.ballman]

In D55792#1334291, @Szelethus wrote:

Thank you so much for working on this! The lack of a proper documentation is indeed a weak points of the project.

Yeah, the more we can couple the documentation to the check definitions, the more likely we are to see the documentation remain up to date as checks are added (at least, that's been the case with attributes).

I guess it'd be better to generate the entire URI in the tblgen file, and also allow plugins to register their own through CheckerRegistry. Sarif lacking the support for them is one thing, but adding a new field to the Checker class in CheckerBase.td I think should be accompanied by extending CheckerRegistry::CheckerInfo and CheckerRegistry::getChecker.

Good point about the checker registry, I'll make those changes. However, I'm a bit less certain about generating the entire URI in the tablegen file -- that adds a lot of string literals to the binary when I think we don't have to. However, perhaps that's not a huge concern and having the information in its final form in the .inc file is a better approach. WDYT?

While I dislike the use of <a id="some.Checker"></a>, until Sphinx documentation becomes a thing, I guess we can't do much about it.

But the overall direction of this patch is great.

Thanks, I'm glad to hear it!

lib/StaticAnalyzer/Core/SarifDiagnostics.cpp

270–275

As per usual, this won't handle plugin checkers, but the solution is in an arms reach -- in the last couple months, I changed a lot around checker registration, and once things settle down a bit.

I knew this wouldn't do good things for plugins yet, but I'm glad to hear things are moving forward on that front!

One idea is to store the list of registered checkers (now, in this case, registered means that the analyzer even knows about its existence, not that it's enabled) in AnalyzerOptions, however it'd force you to put an extra parameter to almost all functions here. What do you think?

I could always wrap these methods up to be private methods of the SarifDiagnostics class so they'd have access to the options, so I think there's a decent path forward.

284–286

In part so there will be less string literals, basically. By supplying only the .html target in the .inc file, we have one of three string literals there. I could move the http:// part in to the .inc file as well (we'd still only have the same three string literals), but if I moved the anchor targets as well, we now have N string literals baked into the binary when we don't need to use that much space.

utils/TableGen/ClangSACheckersEmitter.cpp

90–91

You make that mistake *one time* and then you add comments to the top of the auto-generated file. ;-)

[aaron.ballman]

Updated based on review feedback.

Now generating the full HTML link from tablegen instead of piecemeal. Also, updated CheckerRegistry and CheckerInfo to expose this information for checkers written as plugins.

[Szelethus]

Global nit: I guess having both DESC and DOCS as variable/macro arg names is confusing. Can we instead use DOCSURI/DocsUri?

In D55792#1334339, @aaron.ballman wrote:

In D55792#1334291, @Szelethus wrote:

Thank you so much for working on this! The lack of a
I guess it'd be better to generate the entire URI in the tblgen file, and also allow plugins to register their own through CheckerRegistry. Sarif lacking the support for them is one thing, but adding a new field to the Checker class in CheckerBase.td I think should be accompanied by extending CheckerRegistry::CheckerInfo and CheckerRegistry::getChecker.

Good point about the checker registry, I'll make those changes. However, I'm a bit less certain about generating the entire URI in the tablegen file -- that adds a lot of string literals to the binary when I think we don't have to. However, perhaps that's not a huge concern and having the information in its final form in the .inc file is a better approach. WDYT?

Well, we already store checker- and the quite lengthy -analyzer-config descriptions... but I'm not sure thats a good point.
However, plugin checkers being able to specify uris such as "mycompany.internal.supersecret.idk/dontshare/checkers/tradesecrets.html" would be neat.

One more thing to consider is that if Sphinx lands after 8.0.0., the uri will most probably change. We can always redirect, but thats a thing to consider. I'm not sure whether there's any likelihood of it being completed until the new release branch is created. But I don't think there's any change needed for this patch just because of this.

lib/StaticAnalyzer/Core/SarifDiagnostics.cpp

270–275

Ah, touchpad messed up my inline, but I guess it was understandable.

Okay, thanks, one more concern out of the way then!

[aaron.ballman]

In D55792#1334644, @Szelethus wrote:

Global nit: I guess having both DESC and DOCS as variable/macro arg names is confusing. Can we instead use DOCSURI/DocsUri?

Sure, I'll make that change.

In D55792#1334339, @aaron.ballman wrote:

In D55792#1334291, @Szelethus wrote:

Thank you so much for working on this! The lack of a
I guess it'd be better to generate the entire URI in the tblgen file, and also allow plugins to register their own through CheckerRegistry. Sarif lacking the support for them is one thing, but adding a new field to the Checker class in CheckerBase.td I think should be accompanied by extending CheckerRegistry::CheckerInfo and CheckerRegistry::getChecker.

Good point about the checker registry, I'll make those changes. However, I'm a bit less certain about generating the entire URI in the tablegen file -- that adds a lot of string literals to the binary when I think we don't have to. However, perhaps that's not a huge concern and having the information in its final form in the .inc file is a better approach. WDYT?

Well, we already store checker- and the quite lengthy -analyzer-config descriptions... but I'm not sure thats a good point.
However, plugin checkers being able to specify uris such as "mycompany.internal.supersecret.idk/dontshare/checkers/tradesecrets.html" would be neat.

One more thing to consider is that if Sphinx lands after 8.0.0., the uri will most probably change. We can always redirect, but thats a thing to consider. I'm not sure whether there's any likelihood of it being completed until the new release branch is created. But I don't think there's any change needed for this patch just because of this.

Yeah, I wound up pushing all of the data into the table generator as suggested. The plugin registration was what did it for me -- when registering a checker, we should have the full link to the help URI rather than try to build it from pieces that may not be correct for plugins.

[aaron.ballman]

Updating based on review feedback.

Changed the macro name from DOCS to DOC_URI to differentiate it from DESC.

[Szelethus]

This is awesome. Please wait for either @NoQ or @george.karpenkov to have the final say.

Edit: Maybe couple days I guess. I've been digging through these files quite a lot in the last 2 months, and I don't see anything wrong with this patch.

[aaron.ballman]

In D55792#1334886, @Szelethus wrote:

This is awesome. Please wait for either @NoQ or @george.karpenkov to have the final say.

Edit: Maybe couple days I guess. I've been digging through these files quite a lot in the last 2 months, and I don't see anything wrong with this patch.

@dkrupp, @NoQ, @george.karpenkov -- any comments? I'll probably commit early tomorrow if there isn't further feedback (and I'm happy to deal with anything post-commit if it arises).

[NoQ]

Looks great, no objections on my end!

[george.karpenkov]

This is amazing, huge thanks for doing this!

[aaron.ballman]

Thanks for the reviews! I've commit in r349812.

[FlameTop]

I'm afraid we are seeing a build failure here on our local Windows checking MSVC build. Unfortunately I cannot find a public buildbot that uses the exact configuration that causes the assertion. The assertion we are seeing is

Assertion failed: isa<X>(Val) && "cast<Ty>() argument of incompatible type!", file F:\merge3\o\llvm\include\llvm/Support/Casting.h, line 255

It would appear it will not allow a cast from 'Init' to 'BitInit'. There is a very similar routine in the file X86EX2VEXTTablesEmitter.cpp as follows

static inline uint64_t getValueFromBitsInit(const BitsInit *B) {
uint64_t Value = 0;
for (unsigned i = 0, e = B->getNumBits(); i != e; ++i) {

if (BitInit *Bit = dyn_cast<BitInit>(B->getBit(i)))
  Value |= uint64_t(Bit->getValue()) << i;
else
  PrintFatalError("Invalid VectSize bit");

}
return Value;
}

Which appears to serve the same purpose but uses a dynamic cast. If I replace your routine with this technique our build succeeds.

regards

Phil Camp, SIE

include/clang/Driver/CC1Options.td

 def analyzer_stats : Flag<["-"], "analyzer-stats">,
   HelpText<"Print internal analyzer statistics.">;
 
 def analyzer_checker : Separate<["-"], "analyzer-checker">,
   HelpText<"Choose analyzer checkers to enable">,
   ValuesCode<[{
     const char *Values =
     #define GET_CHECKERS
-    #define CHECKER(FULLNAME, CLASS, HT)  FULLNAME ","
+    #define CHECKER(FULLNAME, CLASS, HT, DOCS)  FULLNAME ","
     #include "clang/StaticAnalyzer/Checkers/Checkers.inc"
     #undef GET_CHECKERS
     #define GET_PACKAGES
     #define PACKAGE(FULLNAME)  FULLNAME ","
     #include "clang/StaticAnalyzer/Checkers/Checkers.inc"
     #undef GET_PACKAGES
     ;
   }]>;

include/clang/StaticAnalyzer/Checkers/BuiltinCheckerRegistration.h

 
 namespace clang {
 
 namespace ento {
 class CheckerManager;
 class CheckerRegistry;
 
 #define GET_CHECKERS
-#define CHECKER(FULLNAME, CLASS, HELPTEXT)                                     \
+#define CHECKER(FULLNAME, CLASS, HELPTEXT, DOCS)                               \
   void register##CLASS(CheckerManager &mgr);
 #include "clang/StaticAnalyzer/Checkers/Checkers.inc"
 #undef CHECKER
 #undef GET_CHECKERS
 
 } // end ento namespace
 
 } // end clang namespace
 
 #endif

include/clang/StaticAnalyzer/Checkers/CheckerBase.td

 /// Example:
 ///   def CoreBuiltin : Package<"builtin">, ParentPackage<Core>;
 class ParentPackage<Package P> { Package ParentPackage = P; }
 
 /// A description. May be displayed to the user when clang is invoked with
 /// a '-help'-like command line option.
 class HelpText<string text> { string HelpText = text; }
 
+/// Describes what kind of documentation exists for the checker.
+class DocumentationEnum<bits<2> val> {
+  bits<2> Documentation = val;
+}
+def NotDocumented : DocumentationEnum<0>;
+def HasDocumentation : DocumentationEnum<1>;
+def HasAlphaDocumentation : DocumentationEnum<2>;
+
+class Documentation<DocumentationEnum val> {
+  bits<2> Documentation = val.Documentation;
+}
+
 /// Describes a checker. Every builtin checker has to be registered with the use
 /// of this class (out-of-trunk checkers loaded from plugins obviously don't).
 /// Note that a checker has a name (e.g.: 'NullDereference'), and a fullname,
 /// that is autogenerated with the help of the ParentPackage field, that also
 /// includes package names (e.g.: 'core.NullDereference').
 class Checker<string name = ""> {
   string      CheckerName = name;
   string      HelpText;
+  bits<2>     Documentation;
   Package ParentPackage;
 }

include/clang/StaticAnalyzer/Checkers/Checkers.td

 
 //===----------------------------------------------------------------------===//
 // Core Checkers.
 //===----------------------------------------------------------------------===//
 
 let ParentPackage = Core in {
 
 def DereferenceChecker : Checker<"NullDereference">,
-  HelpText<"Check for dereferences of null pointers">;
+  HelpText<"Check for dereferences of null pointers">,
+  Documentation<HasDocumentation>;
 
 def CallAndMessageChecker : Checker<"CallAndMessage">,
   HelpText<"Check for logical errors for function calls and Objective-C "
            "message expressions (e.g., uninitialized arguments, null function "
-           "pointers)">;
+           "pointers)">,
+  Documentation<HasDocumentation>;
 
 def NonNullParamChecker : Checker<"NonNullParamChecker">,
   HelpText<"Check for null pointers passed as arguments to a function whose "
-           "arguments are references or marked with the 'nonnull' attribute">;
+           "arguments are references or marked with the 'nonnull' attribute">,
+  Documentation<HasDocumentation>;
 
 def VLASizeChecker : Checker<"VLASize">,
-  HelpText<"Check for declarations of VLA of undefined or zero size">;
+  HelpText<"Check for declarations of VLA of undefined or zero size">,
+  Documentation<HasDocumentation>;
 
 def DivZeroChecker : Checker<"DivideZero">,
-  HelpText<"Check for division by zero">;
+  HelpText<"Check for division by zero">,
+  Documentation<HasDocumentation>;
 
 def UndefResultChecker : Checker<"UndefinedBinaryOperatorResult">,
-  HelpText<"Check for undefined results of binary operators">;
+  HelpText<"Check for undefined results of binary operators">,
+  Documentation<HasDocumentation>;
 
 def StackAddrEscapeChecker : Checker<"StackAddressEscape">,
-  HelpText<"Check that addresses to stack memory do not escape the function">;
+  HelpText<"Check that addresses to stack memory do not escape the function">,
+  Documentation<HasDocumentation>;
 
 def DynamicTypePropagation : Checker<"DynamicTypePropagation">,
-  HelpText<"Generate dynamic type information">;
+  HelpText<"Generate dynamic type information">,
+  Documentation<NotDocumented>;
 
 def NonnullGlobalConstantsChecker: Checker<"NonnilStringConstants">,
-  HelpText<"Assume that const string-like globals are non-null">;
+  HelpText<"Assume that const string-like globals are non-null">,
+  Documentation<NotDocumented>;
 
 } // end "core"
 
 let ParentPackage = CoreAlpha in {
 
 def BoolAssignmentChecker : Checker<"BoolAssignment">,
-  HelpText<"Warn about assigning non-{0,1} values to Boolean variables">;
+  HelpText<"Warn about assigning non-{0,1} values to Boolean variables">,
+  Documentation<HasAlphaDocumentation>;
 
 def CastSizeChecker : Checker<"CastSize">,
   HelpText<"Check when casting a malloc'ed type T, whether the size is a "
-           "multiple of the size of T">;
+           "multiple of the size of T">,
+  Documentation<HasAlphaDocumentation>;
 
 def CastToStructChecker : Checker<"CastToStruct">,
-  HelpText<"Check for cast from non-struct pointer to struct pointer">;
+  HelpText<"Check for cast from non-struct pointer to struct pointer">,
+  Documentation<HasAlphaDocumentation>;
 
 def ConversionChecker : Checker<"Conversion">,
-  HelpText<"Loss of sign/precision in implicit conversions">;
+  HelpText<"Loss of sign/precision in implicit conversions">,
+  Documentation<HasAlphaDocumentation>;
 
 def IdenticalExprChecker : Checker<"IdenticalExpr">,
-  HelpText<"Warn about unintended use of identical expressions in operators">;
+  HelpText<"Warn about unintended use of identical expressions in operators">,
+  Documentation<HasAlphaDocumentation>;
 
 def FixedAddressChecker : Checker<"FixedAddr">,
-  HelpText<"Check for assignment of a fixed address to a pointer">;
+  HelpText<"Check for assignment of a fixed address to a pointer">,
+  Documentation<HasAlphaDocumentation>;
 
 def PointerArithChecker : Checker<"PointerArithm">,
   HelpText<"Check for pointer arithmetic on locations other than array "
-           "elements">;
+           "elements">,
+  Documentation<HasAlphaDocumentation>;
 
 def PointerSubChecker : Checker<"PointerSub">,
   HelpText<"Check for pointer subtractions on two pointers pointing to "
-           "different memory chunks">;
+           "different memory chunks">,
+  Documentation<HasAlphaDocumentation>;
 
 def SizeofPointerChecker : Checker<"SizeofPtr">,
-  HelpText<"Warn about unintended use of sizeof() on pointer expressions">;
+  HelpText<"Warn about unintended use of sizeof() on pointer expressions">,
+  Documentation<HasAlphaDocumentation>;
 
 def CallAndMessageUnInitRefArg : Checker<"CallAndMessageUnInitRefArg">,
   HelpText<"Check for logical errors for function calls and Objective-C "
            "message expressions (e.g., uninitialized arguments, null function "
-           "pointers, and pointer to undefined variables)">;
+           "pointers, and pointer to undefined variables)">,
+  Documentation<HasAlphaDocumentation>;
 
 def TestAfterDivZeroChecker : Checker<"TestAfterDivZero">,
   HelpText<"Check for division by variable that is later compared against 0. "
-           "Either the comparison is useless or there is division by zero.">;
+           "Either the comparison is useless or there is division by zero.">,
+  Documentation<HasAlphaDocumentation>;
 
 def DynamicTypeChecker : Checker<"DynamicTypeChecker">,
   HelpText<"Check for cases where the dynamic and the static type of an object "
-           "are unrelated.">;
+           "are unrelated.">,
+  Documentation<HasAlphaDocumentation>;
 
 def StackAddrAsyncEscapeChecker : Checker<"StackAddressAsyncEscape">,
-  HelpText<"Check that addresses to stack memory do not escape the function">;
+  HelpText<"Check that addresses to stack memory do not escape the function">,
+  Documentation<HasAlphaDocumentation>;
 
 } // end "alpha.core"
 
 let ParentPackage = Nullability in {
 
 def NullPassedToNonnullChecker : Checker<"NullPassedToNonnull">,
   HelpText<"Warns when a null pointer is passed to a pointer which has a "
-           "_Nonnull type.">;
+           "_Nonnull type.">,
+  Documentation<HasDocumentation>;
 
 def NullReturnedFromNonnullChecker : Checker<"NullReturnedFromNonnull">,
   HelpText<"Warns when a null pointer is returned from a function that has "
-           "_Nonnull return type.">;
+           "_Nonnull return type.">,
+  Documentation<HasDocumentation>;
 
 def NullableDereferencedChecker : Checker<"NullableDereferenced">,
-  HelpText<"Warns when a nullable pointer is dereferenced.">;
+  HelpText<"Warns when a nullable pointer is dereferenced.">,
+  Documentation<HasDocumentation>;
 
 def NullablePassedToNonnullChecker : Checker<"NullablePassedToNonnull">,
   HelpText<"Warns when a nullable pointer is passed to a pointer which has a "
-           "_Nonnull type.">;
+           "_Nonnull type.">,
+  Documentation<HasDocumentation>;
 
 def NullableReturnedFromNonnullChecker : Checker<"NullableReturnedFromNonnull">,
   HelpText<"Warns when a nullable pointer is returned from a function that has "
-           "_Nonnull return type.">;
+           "_Nonnull return type.">,
+  Documentation<NotDocumented>;
 
 } // end "nullability"
 
 let ParentPackage = APIModeling in {
 
 def StdCLibraryFunctionsChecker : Checker<"StdCLibraryFunctions">,
-  HelpText<"Improve modeling of the C standard library functions">;
+  HelpText<"Improve modeling of the C standard library functions">,
+  Documentation<NotDocumented>;
 
 def TrustNonnullChecker : Checker<"TrustNonnull">,
   HelpText<"Trust that returns from framework methods annotated with _Nonnull "
-           "are not null">;
+           "are not null">,
+  Documentation<NotDocumented>;
 
 } // end "apiModeling"
 
 //===----------------------------------------------------------------------===//
 // Evaluate "builtin" functions.
 //===----------------------------------------------------------------------===//
 
 let ParentPackage = CoreBuiltin in {
 
 def NoReturnFunctionChecker : Checker<"NoReturnFunctions">,
   HelpText<"Evaluate \"panic\" functions that are known to not return to the "
-           "caller">;
+           "caller">,
+  Documentation<NotDocumented>;
 
 def BuiltinFunctionChecker : Checker<"BuiltinFunctions">,
-  HelpText<"Evaluate compiler builtin functions (e.g., alloca())">;
+  HelpText<"Evaluate compiler builtin functions (e.g., alloca())">,
+  Documentation<NotDocumented>;
 
 } // end "core.builtin"
 
 //===----------------------------------------------------------------------===//
 // Uninitialized values checkers.
 //===----------------------------------------------------------------------===//
 
 let ParentPackage = CoreUninitialized in {
 
 def UndefinedArraySubscriptChecker : Checker<"ArraySubscript">,
-  HelpText<"Check for uninitialized values used as array subscripts">;
+  HelpText<"Check for uninitialized values used as array subscripts">,
+  Documentation<HasDocumentation>;
 
 def UndefinedAssignmentChecker : Checker<"Assign">,
-  HelpText<"Check for assigning uninitialized values">;
+  HelpText<"Check for assigning uninitialized values">,
+  Documentation<HasDocumentation>;
 
 def UndefBranchChecker : Checker<"Branch">,
-  HelpText<"Check for uninitialized values used as branch conditions">;
+  HelpText<"Check for uninitialized values used as branch conditions">,
+  Documentation<HasDocumentation>;
 
 def UndefCapturedBlockVarChecker : Checker<"CapturedBlockVariable">,
-  HelpText<"Check for blocks that capture uninitialized values">;
+  HelpText<"Check for blocks that capture uninitialized values">,
+  Documentation<NotDocumented>;
 
 def ReturnUndefChecker : Checker<"UndefReturn">,
-  HelpText<"Check for uninitialized values being returned to the caller">;
+  HelpText<"Check for uninitialized values being returned to the caller">,
+  Documentation<HasDocumentation>;
 
 } // end "core.uninitialized"
 
 //===----------------------------------------------------------------------===//
 // C++ checkers.
 //===----------------------------------------------------------------------===//
 
 let ParentPackage = Cplusplus in {
 
 def InnerPointerChecker : Checker<"InnerPointer">,
   HelpText<"Check for inner pointers of C++ containers used after "
-           "re/deallocation">;
+           "re/deallocation">,
+  Documentation<NotDocumented>;
 
 def NewDeleteChecker : Checker<"NewDelete">,
   HelpText<"Check for double-free and use-after-free problems. Traces memory "
-           "managed by new/delete.">;
+           "managed by new/delete.">,
+  Documentation<HasDocumentation>;
 
 def NewDeleteLeaksChecker : Checker<"NewDeleteLeaks">,
-  HelpText<"Check for memory leaks. Traces memory managed by new/delete.">;
+  HelpText<"Check for memory leaks. Traces memory managed by new/delete.">,
+  Documentation<HasDocumentation>;
 
 def CXXSelfAssignmentChecker : Checker<"SelfAssignment">,
-  HelpText<"Checks C++ copy and move assignment operators for self assignment">;
+  HelpText<"Checks C++ copy and move assignment operators for self assignment">,
+  Documentation<NotDocumented>;
 
 def MoveChecker: Checker<"Move">,
-   HelpText<"Find use-after-move bugs in C++">;
+   HelpText<"Find use-after-move bugs in C++">,
+  Documentation<HasDocumentation>;
 
 } // end: "cplusplus"
 
 let ParentPackage = CplusplusOptIn in {
 
 def VirtualCallChecker : Checker<"VirtualCall">,
-  HelpText<"Check virtual function calls during construction or destruction">;
+  HelpText<"Check virtual function calls during construction or destruction">,
+  Documentation<HasDocumentation>;
 
 } // end: "optin.cplusplus"
 
 let ParentPackage = CplusplusAlpha in {
 
 def DeleteWithNonVirtualDtorChecker : Checker<"DeleteWithNonVirtualDtor">,
   HelpText<"Reports destructions of polymorphic objects with a non-virtual "
-           "destructor in their base class">;
+           "destructor in their base class">,
+  Documentation<HasAlphaDocumentation>;
 
 def EnumCastOutOfRangeChecker : Checker<"EnumCastOutOfRange">,
-  HelpText<"Check integer to enumeration casts for out of range values">;
+  HelpText<"Check integer to enumeration casts for out of range values">,
+  Documentation<HasAlphaDocumentation>;
 
 def InvalidatedIteratorChecker : Checker<"InvalidatedIterator">,
-  HelpText<"Check for use of invalidated iterators">;
+  HelpText<"Check for use of invalidated iterators">,
+  Documentation<HasAlphaDocumentation>;
 
 def IteratorRangeChecker : Checker<"IteratorRange">,
-  HelpText<"Check for iterators used outside their valid ranges">;
+  HelpText<"Check for iterators used outside their valid ranges">,
+  Documentation<HasAlphaDocumentation>;
 
 def MismatchedIteratorChecker : Checker<"MismatchedIterator">,
   HelpText<"Check for use of iterators of different containers where iterators "
-           "of the same container are expected">;
+           "of the same container are expected">,
+  Documentation<HasAlphaDocumentation>;
 
 def UninitializedObjectChecker: Checker<"UninitializedObject">,
-     HelpText<"Reports uninitialized fields after object construction">;
+     HelpText<"Reports uninitialized fields after object construction">,
+  Documentation<HasAlphaDocumentation>;
 
 } // end: "alpha.cplusplus"
 
 
 //===----------------------------------------------------------------------===//
 // Valist checkers.
 //===----------------------------------------------------------------------===//
 
 let ParentPackage = Valist in {
 
 def UninitializedChecker : Checker<"Uninitialized">,
-  HelpText<"Check for usages of uninitialized (or already released) va_lists.">;
+  HelpText<"Check for usages of uninitialized (or already released) va_lists.">,
+  Documentation<NotDocumented>;
 
 def UnterminatedChecker : Checker<"Unterminated">,
-  HelpText<"Check for va_lists which are not released by a va_end call.">;
+  HelpText<"Check for va_lists which are not released by a va_end call.">,
+  Documentation<NotDocumented>;
 
 def CopyToSelfChecker : Checker<"CopyToSelf">,
-  HelpText<"Check for va_lists which are copied onto itself.">;
+  HelpText<"Check for va_lists which are copied onto itself.">,
+  Documentation<NotDocumented>;
 
 } // end : "valist"
 
 //===----------------------------------------------------------------------===//
 // Deadcode checkers.
 //===----------------------------------------------------------------------===//
 
 let ParentPackage = DeadCode in {
 
 def DeadStoresChecker : Checker<"DeadStores">,
   HelpText<"Check for values stored to variables that are never read "
-           "afterwards">;
+           "afterwards">,
+  Documentation<HasDocumentation>;
 
 } // end DeadCode
 
 let ParentPackage = DeadCodeAlpha in {
 
 def UnreachableCodeChecker : Checker<"UnreachableCode">,
-  HelpText<"Check unreachable code">;
+  HelpText<"Check unreachable code">,
+  Documentation<HasAlphaDocumentation>;
 
 } // end "alpha.deadcode"
 
 //===----------------------------------------------------------------------===//
 // Performance checkers.
 //===----------------------------------------------------------------------===//
 
 let ParentPackage = Performance in {
 
 def PaddingChecker : Checker<"Padding">,
-  HelpText<"Check for excessively padded structs.">;
+  HelpText<"Check for excessively padded structs.">,
+  Documentation<NotDocumented>;
 
 } // end: "padding"
 
 //===----------------------------------------------------------------------===//
 // Security checkers.
 //===----------------------------------------------------------------------===//
 
 let ParentPackage = InsecureAPI in {
 
 def bcmp : Checker<"bcmp">,
-  HelpText<"Warn on uses of the 'bcmp' function">;
+  HelpText<"Warn on uses of the 'bcmp' function">,
+  Documentation<HasDocumentation>;
 def bcopy : Checker<"bcopy">,
-  HelpText<"Warn on uses of the 'bcopy' function">;
+  HelpText<"Warn on uses of the 'bcopy' function">,
+  Documentation<HasDocumentation>;
 def bzero : Checker<"bzero">,
-  HelpText<"Warn on uses of the 'bzero' function">;
+  HelpText<"Warn on uses of the 'bzero' function">,
+  Documentation<HasDocumentation>;
 def gets : Checker<"gets">,
-  HelpText<"Warn on uses of the 'gets' function">;
+  HelpText<"Warn on uses of the 'gets' function">,
+  Documentation<HasDocumentation>;
 def getpw : Checker<"getpw">,
-  HelpText<"Warn on uses of the 'getpw' function">;
+  HelpText<"Warn on uses of the 'getpw' function">,
+  Documentation<HasDocumentation>;
 def mktemp : Checker<"mktemp">,
-  HelpText<"Warn on uses of the 'mktemp' function">;
+  HelpText<"Warn on uses of the 'mktemp' function">,
+  Documentation<HasDocumentation>;
 def mkstemp : Checker<"mkstemp">,
   HelpText<"Warn when 'mkstemp' is passed fewer than 6 X's in the format "
-           "string">;
+           "string">,
+  Documentation<HasDocumentation>;
 def rand : Checker<"rand">,
-  HelpText<"Warn on uses of the 'rand', 'random', and related functions">;
+  HelpText<"Warn on uses of the 'rand', 'random', and related functions">,
+  Documentation<HasDocumentation>;
 def strcpy : Checker<"strcpy">,
-  HelpText<"Warn on uses of the 'strcpy' and 'strcat' functions">;
+  HelpText<"Warn on uses of the 'strcpy' and 'strcat' functions">,
+  Documentation<HasDocumentation>;
 def vfork : Checker<"vfork">,
-  HelpText<"Warn on uses of the 'vfork' function">;
+  HelpText<"Warn on uses of the 'vfork' function">,
+  Documentation<HasDocumentation>;
 def UncheckedReturn : Checker<"UncheckedReturn">,
   HelpText<"Warn on uses of functions whose return values must be always "
-           "checked">;
+           "checked">,
+  Documentation<HasDocumentation>;
 
 } // end "security.insecureAPI"
 
 let ParentPackage = Security in {
 
 def FloatLoopCounter : Checker<"FloatLoopCounter">,
   HelpText<"Warn on using a floating point value as a loop counter (CERT: "
-           "FLP30-C, FLP30-CPP)">;
+           "FLP30-C, FLP30-CPP)">,
+  Documentation<HasDocumentation>;
 
 } // end "security"
 
 let ParentPackage = SecurityAlpha in {
 
 def ArrayBoundChecker : Checker<"ArrayBound">,
-  HelpText<"Warn about buffer overflows (older checker)">;
+  HelpText<"Warn about buffer overflows (older checker)">,
+  Documentation<HasAlphaDocumentation>;
 
 def ArrayBoundCheckerV2 : Checker<"ArrayBoundV2">,
-  HelpText<"Warn about buffer overflows (newer checker)">;
+  HelpText<"Warn about buffer overflows (newer checker)">,
+  Documentation<HasAlphaDocumentation>;
 
 def ReturnPointerRangeChecker : Checker<"ReturnPtrRange">,
-  HelpText<"Check for an out-of-bound pointer being returned to callers">;
+  HelpText<"Check for an out-of-bound pointer being returned to callers">,
+  Documentation<HasAlphaDocumentation>;
 
 def MallocOverflowSecurityChecker : Checker<"MallocOverflow">,
-  HelpText<"Check for overflows in the arguments to malloc()">;
+  HelpText<"Check for overflows in the arguments to malloc()">,
+  Documentation<HasAlphaDocumentation>;
 
 // Operating systems specific PROT_READ/PROT_WRITE values is not implemented,
 // the defaults are correct for several common operating systems though,
 // but may need to be overridden via the related analyzer-config flags.
 def MmapWriteExecChecker : Checker<"MmapWriteExec">,
-  HelpText<"Warn on mmap() calls that are both writable and executable">;
+  HelpText<"Warn on mmap() calls that are both writable and executable">,
+  Documentation<HasAlphaDocumentation>;
 
 } // end "alpha.security"
 
 //===----------------------------------------------------------------------===//
 // Taint checkers.
 //===----------------------------------------------------------------------===//
 
 let ParentPackage = Taint in {
 
 def GenericTaintChecker : Checker<"TaintPropagation">,
-  HelpText<"Generate taint information used by other checkers">;
+  HelpText<"Generate taint information used by other checkers">,
+  Documentation<HasAlphaDocumentation>;
 
 } // end "alpha.security.taint"
 
 //===----------------------------------------------------------------------===//
 // Unix API checkers.
 //===----------------------------------------------------------------------===//
 
 let ParentPackage = Unix in {
 
 def UnixAPIMisuseChecker : Checker<"API">,
-  HelpText<"Check calls to various UNIX/Posix functions">;
+  HelpText<"Check calls to various UNIX/Posix functions">,
+  Documentation<HasDocumentation>;
 
 def MallocChecker: Checker<"Malloc">,
   HelpText<"Check for memory leaks, double free, and use-after-free problems. "
-           "Traces memory managed by malloc()/free().">;
+           "Traces memory managed by malloc()/free().">,
+  Documentation<HasDocumentation>;
 
 def MallocSizeofChecker : Checker<"MallocSizeof">,
-  HelpText<"Check for dubious malloc arguments involving sizeof">;
+  HelpText<"Check for dubious malloc arguments involving sizeof">,
+  Documentation<HasDocumentation>;
 
 def MismatchedDeallocatorChecker : Checker<"MismatchedDeallocator">,
-  HelpText<"Check for mismatched deallocators.">;
+  HelpText<"Check for mismatched deallocators.">,
+  Documentation<HasDocumentation>;
 
 def VforkChecker : Checker<"Vfork">,
-  HelpText<"Check for proper usage of vfork">;
+  HelpText<"Check for proper usage of vfork">,
+  Documentation<HasDocumentation>;
 
 } // end "unix"
 
 let ParentPackage = UnixAlpha in {
 
 def ChrootChecker : Checker<"Chroot">,
-  HelpText<"Check improper use of chroot">;
+  HelpText<"Check improper use of chroot">,
+  Documentation<HasAlphaDocumentation>;
 
 def PthreadLockChecker : Checker<"PthreadLock">,
-  HelpText<"Simple lock -> unlock checker">;
+  HelpText<"Simple lock -> unlock checker">,
+  Documentation<HasAlphaDocumentation>;
 
 def StreamChecker : Checker<"Stream">,
-  HelpText<"Check stream handling functions">;
+  HelpText<"Check stream handling functions">,
+  Documentation<HasAlphaDocumentation>;
 
 def SimpleStreamChecker : Checker<"SimpleStream">,
-  HelpText<"Check for misuses of stream APIs">;
+  HelpText<"Check for misuses of stream APIs">,
+  Documentation<HasAlphaDocumentation>;
 
 def BlockInCriticalSectionChecker : Checker<"BlockInCriticalSection">,
-  HelpText<"Check for calls to blocking functions inside a critical section">;
+  HelpText<"Check for calls to blocking functions inside a critical section">,
+  Documentation<HasAlphaDocumentation>;
 
 } // end "alpha.unix"
 
 let ParentPackage = CString in {
 
 def CStringNullArg : Checker<"NullArg">,
   HelpText<"Check for null pointers being passed as arguments to C string "
-           "functions">;
+           "functions">,
+  Documentation<HasDocumentation>;
 
 def CStringSyntaxChecker : Checker<"BadSizeArg">,
   HelpText<"Check the size argument passed into C string functions for common "
-           "erroneous patterns">;
+           "erroneous patterns">,
+  Documentation<HasDocumentation>;
 
 } // end "unix.cstring"
 
 let ParentPackage = CStringAlpha in {
 
 def CStringOutOfBounds : Checker<"OutOfBounds">,
-  HelpText<"Check for out-of-bounds access in string functions">;
+  HelpText<"Check for out-of-bounds access in string functions">,
+  Documentation<HasAlphaDocumentation>;
 
 def CStringBufferOverlap : Checker<"BufferOverlap">,
-  HelpText<"Checks for overlap in two buffer arguments">;
+  HelpText<"Checks for overlap in two buffer arguments">,
+  Documentation<HasAlphaDocumentation>;
 
 def CStringNotNullTerm : Checker<"NotNullTerminated">,
-  HelpText<"Check for arguments which are not null-terminating strings">;
+  HelpText<"Check for arguments which are not null-terminating strings">,
+  Documentation<HasAlphaDocumentation>;
 
 } // end "alpha.unix.cstring"
 
 //===----------------------------------------------------------------------===//
 // Mac OS X, Cocoa, and Core Foundation checkers.
 //===----------------------------------------------------------------------===//
 
 let ParentPackage = OSX in {
 
 def NumberObjectConversionChecker : Checker<"NumberObjectConversion">,
   HelpText<"Check for erroneous conversions of objects representing numbers "
-           "into numbers">;
+           "into numbers">,
+  Documentation<NotDocumented>;
 
 def MacOSXAPIChecker : Checker<"API">,
-  HelpText<"Check for proper uses of various Apple APIs">;
+  HelpText<"Check for proper uses of various Apple APIs">,
+  Documentation<HasDocumentation>;
 
 def MacOSKeychainAPIChecker : Checker<"SecKeychainAPI">,
-  HelpText<"Check for proper uses of Secure Keychain APIs">;
+  HelpText<"Check for proper uses of Secure Keychain APIs">,
+  Documentation<HasDocumentation>;
 
 def ObjCPropertyChecker : Checker<"ObjCProperty">,
-  HelpText<"Check for proper uses of Objective-C properties">;
+  HelpText<"Check for proper uses of Objective-C properties">,
+  Documentation<NotDocumented>;
 
 def OSObjectRetainCountChecker : Checker<"OSObjectRetainCount">,
-  HelpText<"Check for leaks and improper reference count management for OSObject">;
+  HelpText<"Check for leaks and improper reference count management for OSObject">,
+  Documentation<NotDocumented>;
 
 } // end "osx"
 
 let ParentPackage = Cocoa in {
 
 def RunLoopAutoreleaseLeakChecker : Checker<"RunLoopAutoreleaseLeak">,
   HelpText<"Check for leaked memory in autorelease pools that will never be "
-           "drained">;
+           "drained">,
+  Documentation<NotDocumented>;
 
 def ObjCAtSyncChecker : Checker<"AtSync">,
-  HelpText<"Check for nil pointers used as mutexes for @synchronized">;
+  HelpText<"Check for nil pointers used as mutexes for @synchronized">,
+  Documentation<HasDocumentation>;
 
 def NilArgChecker : Checker<"NilArg">,
-  HelpText<"Check for prohibited nil arguments to ObjC method calls">;
+  HelpText<"Check for prohibited nil arguments to ObjC method calls">,
+  Documentation<HasDocumentation>;
 
 def ClassReleaseChecker : Checker<"ClassRelease">,
   HelpText<"Check for sending 'retain', 'release', or 'autorelease' directly "
-           "to a Class">;
+           "to a Class">,
+  Documentation<HasDocumentation>;
 
 def VariadicMethodTypeChecker : Checker<"VariadicMethodTypes">,
   HelpText<"Check for passing non-Objective-C types to variadic collection "
-           "initialization methods that expect only Objective-C types">;
+           "initialization methods that expect only Objective-C types">,
+  Documentation<HasDocumentation>;
 
 def NSAutoreleasePoolChecker : Checker<"NSAutoreleasePool">,
   HelpText<"Warn for suboptimal uses of NSAutoreleasePool in Objective-C GC "
-           "mode">;
+           "mode">,
+  Documentation<HasDocumentation>;
 
 def ObjCMethSigsChecker : Checker<"IncompatibleMethodTypes">,
   HelpText<"Warn about Objective-C method signatures with type "
-           "incompatibilities">;
+           "incompatibilities">,
+  Documentation<HasDocumentation>;
 
 def ObjCUnusedIvarsChecker : Checker<"UnusedIvars">,
-  HelpText<"Warn about private ivars that are never used">;
+  HelpText<"Warn about private ivars that are never used">,
+  Documentation<HasDocumentation>;
 
 def ObjCSelfInitChecker : Checker<"SelfInit">,
   HelpText<"Check that 'self' is properly initialized inside an initializer "
-           "method">;
+           "method">,
+  Documentation<HasDocumentation>;
 
 def ObjCLoopChecker : Checker<"Loops">,
-  HelpText<"Improved modeling of loops using Cocoa collection types">;
+  HelpText<"Improved modeling of loops using Cocoa collection types">,
+  Documentation<NotDocumented>;
 
 def ObjCNonNilReturnValueChecker : Checker<"NonNilReturnValue">,
-  HelpText<"Model the APIs that are guaranteed to return a non-nil value">;
+  HelpText<"Model the APIs that are guaranteed to return a non-nil value">,
+  Documentation<NotDocumented>;
 
 def ObjCSuperCallChecker : Checker<"MissingSuperCall">,
   HelpText<"Warn about Objective-C methods that lack a necessary call to "
-           "super">;
+           "super">,
+  Documentation<NotDocumented>;
 
 def NSErrorChecker : Checker<"NSError">,
-  HelpText<"Check usage of NSError** parameters">;
+  HelpText<"Check usage of NSError** parameters">,
+  Documentation<HasDocumentation>;
 
 def RetainCountChecker : Checker<"RetainCount">,
-  HelpText<"Check for leaks and improper reference count management">;
+  HelpText<"Check for leaks and improper reference count management">,
+  Documentation<HasDocumentation>;
 
 def ObjCGenericsChecker : Checker<"ObjCGenerics">,
-  HelpText<"Check for type errors when using Objective-C generics">;
+  HelpText<"Check for type errors when using Objective-C generics">,
+  Documentation<HasDocumentation>;
 
 def ObjCDeallocChecker : Checker<"Dealloc">,
   HelpText<"Warn about Objective-C classes that lack a correct implementation "
-           "of -dealloc">;
+           "of -dealloc">,
+  Documentation<HasDocumentation>;
 
 def ObjCSuperDeallocChecker : Checker<"SuperDealloc">,
-  HelpText<"Warn about improper use of '[super dealloc]' in Objective-C">;
+  HelpText<"Warn about improper use of '[super dealloc]' in Objective-C">,
+  Documentation<HasDocumentation>;
 
 def AutoreleaseWriteChecker : Checker<"AutoreleaseWrite">,
   HelpText<"Warn about potentially crashing writes to autoreleasing objects "
-           "from different autoreleasing pools in Objective-C">;
+           "from different autoreleasing pools in Objective-C">,
+  Documentation<NotDocumented>;
 
 } // end "osx.cocoa"
 
 let ParentPackage = Performance in {
 
 def GCDAntipattern : Checker<"GCDAntipattern">,
   HelpText<"Check for performance anti-patterns when using Grand Central "
-           "Dispatch">;
+           "Dispatch">,
+  Documentation<NotDocumented>;
 } // end "optin.performance"
 
 let ParentPackage = CocoaAlpha in {
 
 def InstanceVariableInvalidation : Checker<"InstanceVariableInvalidation">,
   HelpText<"Check that the invalidatable instance variables are invalidated in "
-           "the methods annotated with objc_instance_variable_invalidator">;
+           "the methods annotated with objc_instance_variable_invalidator">,
+  Documentation<HasAlphaDocumentation>;
 
 def MissingInvalidationMethod : Checker<"MissingInvalidationMethod">,
   HelpText<"Check that the invalidation methods are present in classes that "
-           "contain invalidatable instance variables">;
+           "contain invalidatable instance variables">,
+  Documentation<HasAlphaDocumentation>;
 
 def DirectIvarAssignment : Checker<"DirectIvarAssignment">,
-  HelpText<"Check for direct assignments to instance variables">;
+  HelpText<"Check for direct assignments to instance variables">,
+  Documentation<HasAlphaDocumentation>;
 
 def DirectIvarAssignmentForAnnotatedFunctions :
   Checker<"DirectIvarAssignmentForAnnotatedFunctions">,
   HelpText<"Check for direct assignments to instance variables in the methods "
-           "annotated with objc_no_direct_instance_variable_assignment">;
+           "annotated with objc_no_direct_instance_variable_assignment">,
+  Documentation<HasAlphaDocumentation>;
 
 } // end "alpha.osx.cocoa"
 
 let ParentPackage = CoreFoundation in {
 
 def CFNumberChecker : Checker<"CFNumber">,
-  HelpText<"Check for proper uses of CFNumber APIs">;
+  HelpText<"Check for proper uses of CFNumber APIs">,
+  Documentation<HasDocumentation>;
 
 def CFRetainReleaseChecker : Checker<"CFRetainRelease">,
-  HelpText<"Check for null arguments to CFRetain/CFRelease/CFMakeCollectable">;
+  HelpText<"Check for null arguments to CFRetain/CFRelease/CFMakeCollectable">,
+  Documentation<HasDocumentation>;
 
 def CFErrorChecker : Checker<"CFError">,
-  HelpText<"Check usage of CFErrorRef* parameters">;
+  HelpText<"Check usage of CFErrorRef* parameters">,
+  Documentation<HasDocumentation>;
 
 } // end "osx.coreFoundation"
 
 let ParentPackage = Containers in {
 
 def ObjCContainersASTChecker : Checker<"PointerSizedValues">,
   HelpText<"Warns if 'CFArray', 'CFDictionary', 'CFSet' are created with "
-           "non-pointer-size values">;
+           "non-pointer-size values">,
+  Documentation<HasDocumentation>;
 
 def ObjCContainersChecker : Checker<"OutOfBounds">,
-  HelpText<"Checks for index out-of-bounds when using 'CFArray' API">;
+  HelpText<"Checks for index out-of-bounds when using 'CFArray' API">,
+  Documentation<HasDocumentation>;
 
 } // end "osx.coreFoundation.containers"
 
 let ParentPackage = LocalizabilityOptIn in {
 
 def NonLocalizedStringChecker : Checker<"NonLocalizedStringChecker">,
   HelpText<"Warns about uses of non-localized NSStrings passed to UI methods "
-           "expecting localized NSStrings">;
+           "expecting localized NSStrings">,
+  Documentation<HasDocumentation>;
 
 def EmptyLocalizationContextChecker :
   Checker<"EmptyLocalizationContextChecker">,
-  HelpText<"Check that NSLocalizedString macros include a comment for context">;
+  HelpText<"Check that NSLocalizedString macros include a comment for context">,
+  Documentation<HasDocumentation>;
 
 } // end "optin.osx.cocoa.localizability"
 
 let ParentPackage = LocalizabilityAlpha in {
 
 def PluralMisuseChecker : Checker<"PluralMisuseChecker">,
   HelpText<"Warns against using one vs. many plural pattern in code when "
-           "generating localized strings.">;
+           "generating localized strings.">,
+  Documentation<HasAlphaDocumentation>;
 
 } // end "alpha.osx.cocoa.localizability"
 
 let ParentPackage = MPI in {
 
 def MPIChecker : Checker<"MPI-Checker">,
-  HelpText<"Checks MPI code">;
+  HelpText<"Checks MPI code">,
+  Documentation<HasDocumentation>;
 
 } // end "optin.mpi"
 
 //===----------------------------------------------------------------------===//
 // Checkers for LLVM development.
 //===----------------------------------------------------------------------===//
 
 let ParentPackage = LLVMAlpha in {
 
 def LLVMConventionsChecker : Checker<"Conventions">,
-  HelpText<"Check code for LLVM codebase conventions">;
+  HelpText<"Check code for LLVM codebase conventions">,
+  Documentation<HasAlphaDocumentation>;
 
 } // end "llvm"
 
 //===----------------------------------------------------------------------===//
 // Checkers modeling Google APIs.
 //===----------------------------------------------------------------------===//
 
 let ParentPackage = GoogleAPIModeling in {
 
 def GTestChecker : Checker<"GTest">,
-  HelpText<"Model gtest assertion APIs">;
+  HelpText<"Model gtest assertion APIs">,
+  Documentation<NotDocumented>;
 
 } // end "apiModeling.google"
 
 //===----------------------------------------------------------------------===//
 // Debugging checkers (for analyzer development).
 //===----------------------------------------------------------------------===//
 
 let ParentPackage = Debug in {
 
 def AnalysisOrderChecker : Checker<"AnalysisOrder">,
-  HelpText<"Print callbacks that are called during analysis in order">;
+  HelpText<"Print callbacks that are called during analysis in order">,
+  Documentation<NotDocumented>;
 
 def DominatorsTreeDumper : Checker<"DumpDominators">,
-  HelpText<"Print the dominance tree for a given CFG">;
+  HelpText<"Print the dominance tree for a given CFG">,
+  Documentation<NotDocumented>;
 
 def LiveVariablesDumper : Checker<"DumpLiveVars">,
-  HelpText<"Print results of live variable analysis">;
+  HelpText<"Print results of live variable analysis">,
+  Documentation<NotDocumented>;
 
 def LiveStatementsDumper : Checker<"DumpLiveStmts">,
-  HelpText<"Print results of live statement analysis">;
+  HelpText<"Print results of live statement analysis">,
+  Documentation<NotDocumented>;
 
 def CFGViewer : Checker<"ViewCFG">,
-  HelpText<"View Control-Flow Graphs using GraphViz">;
+  HelpText<"View Control-Flow Graphs using GraphViz">,
+  Documentation<NotDocumented>;
 
 def CFGDumper : Checker<"DumpCFG">,
-  HelpText<"Display Control-Flow Graphs">;
+  HelpText<"Display Control-Flow Graphs">,
+  Documentation<NotDocumented>;
 
 def CallGraphViewer : Checker<"ViewCallGraph">,
-  HelpText<"View Call Graph using GraphViz">;
+  HelpText<"View Call Graph using GraphViz">,
+  Documentation<NotDocumented>;
 
 def CallGraphDumper : Checker<"DumpCallGraph">,
-  HelpText<"Display Call Graph">;
+  HelpText<"Display Call Graph">,
+  Documentation<NotDocumented>;
 
 def ConfigDumper : Checker<"ConfigDumper">,
-  HelpText<"Dump config table">;
+  HelpText<"Dump config table">,
+  Documentation<NotDocumented>;
 
 def TraversalDumper : Checker<"DumpTraversal">,
-  HelpText<"Print branch conditions as they are traversed by the engine">;
+  HelpText<"Print branch conditions as they are traversed by the engine">,
+  Documentation<NotDocumented>;
 
 def CallDumper : Checker<"DumpCalls">,
-  HelpText<"Print calls as they are traversed by the engine">;
+  HelpText<"Print calls as they are traversed by the engine">,
+  Documentation<NotDocumented>;
 
 def AnalyzerStatsChecker : Checker<"Stats">,
-  HelpText<"Emit warnings with analyzer statistics">;
+  HelpText<"Emit warnings with analyzer statistics">,
+  Documentation<NotDocumented>;
 
 def TaintTesterChecker : Checker<"TaintTest">,
-  HelpText<"Mark tainted symbols as such.">;
+  HelpText<"Mark tainted symbols as such.">,
+  Documentation<NotDocumented>;
 
 def ExprInspectionChecker : Checker<"ExprInspection">,
-  HelpText<"Check the analyzer's understanding of expressions">;
+  HelpText<"Check the analyzer's understanding of expressions">,
+  Documentation<NotDocumented>;
 
 def ExplodedGraphViewer : Checker<"ViewExplodedGraph">,
-  HelpText<"View Exploded Graphs using GraphViz">;
+  HelpText<"View Exploded Graphs using GraphViz">,
+  Documentation<NotDocumented>;
 
 } // end "debug"
 
 
 //===----------------------------------------------------------------------===//
 // Clone Detection
 //===----------------------------------------------------------------------===//
 
 let ParentPackage = CloneDetectionAlpha in {
 
 def CloneChecker : Checker<"CloneChecker">,
-  HelpText<"Reports similar pieces of code.">;
+  HelpText<"Reports similar pieces of code.">,
+  Documentation<HasAlphaDocumentation>;
 
 } // end "clone"
 
 //===----------------------------------------------------------------------===//
 // Portability checkers.
 //===----------------------------------------------------------------------===//
 
 let ParentPackage = PortabilityOptIn in {
 
 def UnixAPIPortabilityChecker : Checker<"UnixAPI">,
-  HelpText<"Finds implementation-defined behavior in UNIX/Posix functions">;
+  HelpText<"Finds implementation-defined behavior in UNIX/Posix functions">,
+  Documentation<NotDocumented>;
 
 } // end optin.portability

lib/StaticAnalyzer/Core/AnalyzerOptions.cpp

 using namespace clang;
 using namespace ento;
 using namespace llvm;
 
 std::vector<StringRef>
 AnalyzerOptions::getRegisteredCheckers(bool IncludeExperimental /* = false */) {
   static const StringRef StaticAnalyzerChecks[] = {
 #define GET_CHECKERS
-#define CHECKER(FULLNAME, CLASS, HELPTEXT)                                     \
+#define CHECKER(FULLNAME, CLASS, HELPTEXT, DOCS)                               \
   FULLNAME,
 #include "clang/StaticAnalyzer/Checkers/Checkers.inc"
 #undef CHECKER
 #undef GET_CHECKERS
   };
   std::vector<StringRef> Result;
   for (StringRef CheckName : StaticAnalyzerChecks) {
     if (!CheckName.startswith("debug.") &&

lib/StaticAnalyzer/Core/SarifDiagnostics.cpp

            *Diag.getLocation().asLocation().getFileEntry(), SMgr, Files))}},
       {"ruleIndex", Iter->getValue()},
       {"ruleId", Diag.getCheckName()}};
 }
 
 static StringRef getRuleDescription(StringRef CheckName) {
   return llvm::StringSwitch<StringRef>(CheckName)
 #define GET_CHECKERS
-#define CHECKER(FULLNAME, CLASS, HELPTEXT)                                     \
+#define CHECKER(FULLNAME, CLASS, HELPTEXT, DOCS)                               \
   .Case(FULLNAME, HELPTEXT)
 #include "clang/StaticAnalyzer/Checkers/Checkers.inc"
 #undef CHECKER
 #undef GET_CHECKERS
       ;
 }
 
+static std::string getRuleHelpURIStr(StringRef CheckName) {
+  StringRef DocLoc = llvm::StringSwitch<StringRef>(CheckName)
+#define GET_CHECKERS
+#define CHECKER(FULLNAME, CLASS, HELPTEXT, DOCS)                               \
+  .Case(FULLNAME, DOCS)
+#include "clang/StaticAnalyzer/Checkers/Checkers.inc"
+#undef CHECKER
+#undef GET_CHECKERS
+      ;
+
+  // If there is documentation for the given check, then we were told which
+  // HTML page to load on the main static analyzer page and the check name is
+  // the anchor to target.
+  if (DocLoc.empty())
+    return "";
+
+  return (llvm::Twine("https://clang-analyzer.llvm.org/") + DocLoc + "#" +
+          CheckName)
+      .str();
+}
+
 static json::Object createRule(const PathDiagnostic &Diag) {
   StringRef CheckName = Diag.getCheckName();
-  return json::Object{
+  json::Object Ret{
       {"fullDescription", createMessage(getRuleDescription(CheckName))},
       {"name", createMessage(CheckName)},
       {"id", CheckName}};
+
+  std::string RuleURI = getRuleHelpURIStr(CheckName);
+  if (!RuleURI.empty())
+    Ret["helpURI"] = RuleURI;
+
+  return Ret;
 }
 
 static json::Array createRules(std::vector<const PathDiagnostic *> &Diags,
                                StringMap<unsigned> &RuleMapping) {
   json::Array Rules;
   llvm::StringSet<> Seen;
 
   llvm::for_each(Diags, [&](const PathDiagnostic *D) {

lib/StaticAnalyzer/Frontend/CheckerRegistry.cpp

static bool isCompatibleAPIVersion(const char *versionString) {
   // For now, none of the static analyzer API is considered stable.
   // Versions must match exactly.
   return strcmp(versionString, CLANG_ANALYZER_API_VERSION_STRING) == 0;
 }
 
 CheckerRegistry::CheckerRegistry(ArrayRef<std::string> plugins,
                                  DiagnosticsEngine &diags) : Diags(diags) {
 #define GET_CHECKERS
-#define CHECKER(FULLNAME, CLASS, HELPTEXT)                                     \
+#define CHECKER(FULLNAME, CLASS, HELPTEXT, DOCS)                               \
   addChecker(register##CLASS, FULLNAME, HELPTEXT);
 #include "clang/StaticAnalyzer/Checkers/Checkers.inc"
 #undef CHECKER
 #undef GET_CHECKERS
 
   for (ArrayRef<std::string>::iterator i = plugins.begin(), e = plugins.end();
        i != e; ++i) {
     // Get access to the plugin.

test/Analysis/diagnostics/Inputs/expected-sarif/sarif-multi-diagnostic-test.c.sarif

"runs": [
             "name": {
               "text": "debug.TaintTest"
             }
           },        
           {
             "fullDescription": {
               "text": "Check for logical errors for function calls and Objective-C message expressions (e.g., uninitialized arguments, null function pointers)"
             },
+            "helpURI": "https://clang-analyzer.llvm.org/available_checks.html#core.CallAndMessage",
             "id": "core.CallAndMessage",
             "name": {
               "text": "core.CallAndMessage"
             }
           },
           {
             "fullDescription": {
               "text": "Check for division by zero"
             },
+            "helpURI": "https://clang-analyzer.llvm.org/available_checks.html#core.DivideZero",
             "id": "core.DivideZero",
             "name": {
               "text": "core.DivideZero"
             }
           }
         ]
       },
       "results": [

utils/TableGen/ClangSACheckersEmitter.cpp

 }
 
 static std::string getStringValue(const Record &R, StringRef field) {
   if (StringInit *SI = dyn_cast<StringInit>(R.getValueInit(field)))
     return SI->getValue();
   return std::string();
 }
 
+// Calculates the integer value representing the BitsInit object
+static inline uint64_t getValueFromBitsInit(const BitsInit *B) {
+  assert(B->getNumBits() <= sizeof(uint64_t) * 8 && "BitInits' too long!");
+
+  uint64_t Value = 0;
+  for (unsigned i = 0, e = B->getNumBits(); i != e; ++i) {
+    const auto *Bit = cast<BitInit>(B->getBit(i));
+    Value |= uint64_t(Bit->getValue()) << i;
+  }
+  return Value;
+}
+
+static std::string getCheckerDocs(const Record &R) {
+  if (BitsInit *BI = R.getValueAsBitsInit("Documentation")) {
+    uint64_t V = getValueFromBitsInit(BI);
+    if (V == 1)
+      return "available_checks.html";
+    else if (V == 2)
+      return "alpha_checks.html";
+  }
+  return "";
+}
+
 namespace clang {
 void EmitClangSACheckers(RecordKeeper &Records, raw_ostream &OS) {
   std::vector<Record*> checkers = Records.getAllDerivedDefinitions("Checker");
   std::vector<Record*> packages = Records.getAllDerivedDefinitions("Package");
 
   using SortedRecords = llvm::StringMap<const Record *>;
 
+  OS << "// This file is automatically generated. Do not edit this file by "
+        "hand.\n";
+
   OS << "\n#ifdef GET_PACKAGES\n";
   {
     SortedRecords sortedPackages;
     for (unsigned i = 0, e = packages.size(); i != e; ++i)
       sortedPackages[getPackageFullName(packages[i])] = packages[i];
   
     for (SortedRecords::iterator
            I = sortedPackages.begin(), E = sortedPackages.end(); I != E; ++I) {
void EmitClangSACheckers(RecordKeeper &Records, raw_ostream &OS) {
   OS << "\n#ifdef GET_CHECKERS\n";
   for (unsigned i = 0, e = checkers.size(); i != e; ++i) {
     const Record &R = *checkers[i];
 
     OS << "CHECKER(" << "\"";
     OS.write_escaped(getCheckerFullName(&R)) << "\", ";
     OS << R.getName() << ", ";
     OS << "\"";
-    OS.write_escaped(getStringValue(R, "HelpText")) << '\"';
+    OS.write_escaped(getStringValue(R, "HelpText")) << "\", ";
+    OS << "\"";
+    OS.write_escaped(getCheckerDocs(R));
+    OS << "\"";
     OS << ")\n";
   }
   OS << "#endif // GET_CHECKERS\n\n";
 }
 } // end namespace clang

www/analyzer/alpha_checks.html

 <!-- ============================= clone alpha ============================= -->
 
 <h3 id="clone_alpha_checkers">Clone Alpha Checkers</h3>
 <table class="checkers">
 <colgroup><col class="namedescr"><col class="example"></colgroup>
 <thead><tr><td>Name, Description</td><td>Example</td></tr></thead>
 
 <tbody>
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.clone.CloneChecker"><div class="namedescr expandable"><span class="name">
 alpha.clone.CloneChecker</span><span class="lang">
 (C, C++, ObjC)</span><div class="descr">
-Reports similar pieces of code.</div></div></td>
+Reports similar pieces of code.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void log();
 
 int max(int a, int b) { // warn
   log();
   if (a > b)
     return a;

 
 <!-- ============================= core alpha ============================= -->
 <h3 id="core_alpha_checkers">Core Alpha Checkers</h3>
 <table class="checkers">
 <colgroup><col class="namedescr"><col class="example"></colgroup>
 <thead><tr><td>Name, Description</td><td>Example</td></tr></thead>
 
 <tbody>
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.core.BoolAssignment"><div class="namedescr expandable"><span class="name">
 alpha.core.BoolAssignment</span><span class="lang">
 (ObjC)</span><div class="descr">
-Warn about assigning non-{0,1} values to boolean variables.</div></div></td>
+Warn about assigning non-{0,1} values to boolean variables.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   BOOL b = -1; // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.core.CallAndMessageUnInitRefArg"><div class="namedescr expandable"><span class="name">
 alpha.core.CallAndMessageUnInitRefArg</span><span class="lang">
 (C, C++)</span><div class="descr">
-Check for uninitialized arguments in function calls and Objective-C 
-message expressions.</div></div></td>
+Check for uninitialized arguments in function calls and Objective-C
+message expressions.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test(void) {
   int t;
   int &p = t;
   int &s = p;
   int &q = s;
   foo(q); // warn
 }
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 void test(void) {
   int x;
   foo(&x); // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.core.CastSize"><div class="namedescr expandable"><span class="name">
 alpha.core.CastSize</span><span class="lang">
 (C)</span><div class="descr">
-Check when casting a malloc'ed type T, whether the size is a multiple of the 
+Check when casting a malloc'ed type T, whether the size is a multiple of the
 size of T (Works only with <span class="name">unix.Malloc</span>
-or <span class="name">alpha.unix.MallocWithAnnotations</span> 
-checks enabled).</div></div></td>
+or <span class="name">alpha.unix.MallocWithAnnotations</span>
+checks enabled).</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   int *x = (int *)malloc(11); // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.core.CastToStruct"><div class="namedescr expandable"><span class="name">
 alpha.core.CastToStruct</span><span class="lang">
 (C, C++)</span><div class="descr">
-Check for cast from non-struct pointer to struct pointer.</div></div></td>
+Check for cast from non-struct pointer to struct pointer.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 // C
 struct s {};
 
 void test(int *p) {
   struct s *ps = (struct s *) p; // warn
 }
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 // C++
 class c {};
 
 void test(int *p) {
   c *pc = (c *) p; // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.core.Conversion"><div class="namedescr expandable"><span class="name">
 alpha.core.Conversion</span><span class="lang">
 (C, C++, ObjC)</span><div class="descr">
-Loss of sign or precision in implicit conversions</div></div></td>
+Loss of sign or precision in implicit conversions</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test(unsigned U, signed S) {
   if (S > 10) {
     if (U < S) {
     }
   }
   if (S < -10) {
     if (U < S) { // warn (loss of sign)
     }
   }
 }
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 void test() {
   long long A = 1LL << 60;
   short X = A; // warn (loss of precision)
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.core.DynamicTypeChecker"><div class="namedescr expandable"><span class="name">
 alpha.core.DynamicTypeChecker</span><span class="lang">
 (ObjC)</span><div class="descr">
-Check for cases where the dynamic and the static type of an 
-object are unrelated.</div></div></td>
+Check for cases where the dynamic and the static type of an
+object are unrelated.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 id date = [NSDate date];
 
-// Warning: Object has a dynamic type 'NSDate *' which is 
+// Warning: Object has a dynamic type 'NSDate *' which is
 // incompatible with static type 'NSNumber *'"
 NSNumber *number = date;
 [number doubleValue];
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.core.FixedAddr"><div class="namedescr expandable"><span class="name">
 alpha.core.FixedAddr</span><span class="lang">
 (C)</span><div class="descr">
-Check for assignment of a fixed address to a pointer.</div></div></td>
+Check for assignment of a fixed address to a pointer.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   int *p;
   p = (int *) 0x10000; // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.core.IdenticalExpr"><div class="namedescr expandable"><span class="name">
 alpha.core.IdenticalExpr</span><span class="lang">
 (C, C++)</span><div class="descr">
-Warn about suspicious uses of identical expressions.</div></div></td>
+Warn about suspicious uses of identical expressions.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 // C
 void test() {
   int a = 5;
   int b = a | 4 | a; // warn: identical expr on both sides
 }
 </pre></div><div class="separator"></div>
if (f()) { // warn: true and false branches are identical
     do {
       i--;
     } while (f());
   }
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.core.PointerArithm"><div class="namedescr expandable"><span class="name">
 alpha.core.PointerArithm</span><span class="lang">
 (C)</span><div class="descr">
-Check for pointer arithmetic on locations other than array 
-elements.</div></div></td>
+Check for pointer arithmetic on locations other than array
+elements.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   int x;
   int *p;
   p = &amp;x + 1; // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.core.PointerSub"><div class="namedescr expandable"><span class="name">
 alpha.core.PointerSub</span><span class="lang">
 (C)</span><div class="descr">
-Check for pointer subtractions on two pointers pointing to different memory 
-chunks.</div></div></td>
+Check for pointer subtractions on two pointers pointing to different memory
+chunks.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   int x, y;
   int d = &amp;y - &amp;x; // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.core.SizeofPtr"><div class="namedescr expandable"><span class="name">
 alpha.core.SizeofPtr</span><span class="lang">
 (C)</span><div class="descr">
-Warn about unintended use of <code>sizeof()</code> on pointer 
-expressions.</div></div></td>
+Warn about unintended use of <code>sizeof()</code> on pointer
+expressions.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 struct s {};
 
 int test(struct s *p) {
-  return sizeof(p); 
+  return sizeof(p);
     // warn: sizeof(ptr) can produce an unexpected result
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.core.StackAddressAsyncEscape"><div class="namedescr expandable"><span class="name">
 alpha.core.StackAddressAsyncEscape</span><span class="lang">
 (C)</span><div class="descr">
 Check that addresses to stack memory do not escape the function that involves
 <code>dispatch_after</code> or <code>dispatch_async</code>. This checker is
 a part of core.StackAddressEscape, but is
 <a href=https://reviews.llvm.org/D41042>temporarily disabled</a> until some
-false positives are fixed.</div></div></td>
+false positives are fixed.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 dispatch_block_t test_block_inside_block_async_leak() {
   int x = 123;
   void (^inner)(void) = ^void(void) {
     int y = x;
-    ++y; 
+    ++y;
   };
   void (^outer)(void) = ^void(void) {
     int z = x;
     ++z;
-    inner(); 
-  }; 
+    inner();
+  };
   return outer; // warn: address of stack-allocated block is captured by a
                 //       returned block
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.core.TestAfterDivZero"><div class="namedescr expandable"><span class="name">
 alpha.core.TestAfterDivZero</span><span class="lang">
 (C, C++, ObjC)</span><div class="descr">
-Check for division by variable that is later compared against 0. 
+Check for division by variable that is later compared against 0.
 Either the comparison is useless or there is division by zero.
-</div></div></td>
+</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test(int x) {
   var = 77 / x;
-  if (x == 0) { } // warn 
+  if (x == 0) { } // warn
 }
 </pre></div></div></td></tr>
 
 
 </tbody></table>
 
 <!-- =========================== cplusplus alpha =========================== -->
 <h3 id="cplusplus_alpha_checkers">C++ Alpha Checkers</h3>
 <table class="checkers">
 <colgroup><col class="namedescr"><col class="example"></colgroup>
 <thead><tr><td>Name, Description</td><td>Example</td></tr></thead>
 <tbody>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.cplusplus.DeleteWithNonVirtualDtor"><div class="namedescr expandable"><span class="name">
 alpha.cplusplus.DeleteWithNonVirtualDtor</span><span class="lang">
 (C++)</span><div class="descr">
 Reports destructions of polymorphic objects with a non-virtual destructor in
 their base class
-</div></div></td>
+</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 NonVirtual *create() {
   NonVirtual *x = new NVDerived(); // note: conversion from derived to base
                                    //       happened here
   return x;
 }
 
 void sink(NonVirtual *x) {
   delete x; // warn: destruction of a polymorphic object with no virtual
             //       destructor
 }
 </pre></div></div></td></tr>
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.cplusplus.EnumCastOutOfRange"><div class="namedescr expandable"><span class="name">
 alpha.cplusplus.EnumCastOutOfRange</span><span class="lang">
 (C++)</span><div class="descr">
   Check for integer to enumeration casts that could result in undefined values.
-</div></div></td>
+</div></div></a></td>
   <td><div class="exampleContainer expandable">
     <div class="example"><pre>
 enum TestEnum {
   A = 0
 };
 
 void foo() {
   TestEnum t = static_cast<TestEnum>(-1);
       // warn: the value provided to the cast expression is not in
                the valid range of values for the enum
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.cplusplus.InvalidatedIterator"><div class="namedescr expandable"><span class="name">
 alpha.cplusplus.InvalidatedIterator</span><span class="lang">
 (C++)</span><div class="descr">
 Check for use of invalidated iterators.
-</div></div></td>
+</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void bad_copy_assign_operator_list1(std::list<int> &L1,
                                     const std::list<int> &L2) {
   auto i0 = L1.cbegin();
   L1 = L2;
   *i0; // warn: invalidated iterator accessed
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.cplusplus.IteratorRange"><div class="namedescr expandable"><span class="name">
 alpha.cplusplus.IteratorRange</span><span class="lang">
 (C++)</span><div class="descr">
 Check for iterators used outside their valid ranges.
-</div></div></td>
+</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void simple_bad_end(const std::vector<int> &v) {
   auto i = v.end();
   *i; // warn: iterator accessed outside of its range
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.cplusplus.MismatchedIterator"><div class="namedescr expandable"><span class="name">
 alpha.cplusplus.MismatchedIterator</span><span class="lang">
 (C++)</span><div class="descr">
 Check for use of iterators of different containers where iterators of the same
 container are expected.
-</div></div></td>
+</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void bad_insert3(std::vector<int> &v1, std::vector<int> &v2) {
   v2.insert(v1.cbegin(), v2.cbegin(), v2.cend()); // warn: container accessed
                                                   //       using foreign
                                                   //       iterator argument
   v1.insert(v1.cbegin(), v1.cbegin(), v2.cend()); // warn: iterators of
                                                   //       different containers
                                                   //       used where the same
                                                   //       container is
                                                   //       expected
   v1.insert(v1.cbegin(), v2.cbegin(), v1.cend()); // warn: iterators of
                                                   //       different containers
                                                   //       used where the same
                                                   //       container is
                                                   //       expected
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
-alpha.cplusplus.MisusedMovedObject</span><span class="lang">
+<tr><td><a id="alpha.cplusplus.Move"><div class="namedescr expandable"><span class="name">
+alpha.cplusplus.Move</span><span class="lang">
 (C++)</span><div class="descr">
 Method calls on a moved-from object and copying a moved-from object will be
 reported.
-</div></div></td>
+</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 struct A {
   void foo() {}
 };
 
 void f() {
   A a;
   A b = std::move(a); // note: 'a' became 'moved-from' here
   a.foo();            // warn: method call on a 'moved-from' object 'a'
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.cplusplus.UninitializedObject"><div class="namedescr expandable"><span class="name">
 alpha.cplusplus.UninitializedObject</span><span class="lang">
 (C++)</span><div class="descr">
 This checker reports uninitialized fields in objects created after a constructor
 call. It doesn't only find direct uninitialized fields, but rather makes a deep
 inspection of the object, analyzing all of it's fields subfields. <br>
 The checker regards inherited fields as direct fields, so one will recieve
 warnings for uninitialized inherited data members as well. <br>
 <br>
<ul>
   </li>
   <li>
     "<code>IgnoreRecordsWithField</code>" (string). If supplied, the checker
     will not analyze structures that have a field with a name or type name that
     matches the given pattern. Defaults to <code>""</code>.
 
     <code>-analyzer-config alpha.cplusplus.UninitializedObject:IgnoreRecordsWithField="[Tt]ag|[Kk]ind"</code>.
   </li>
-</ul></div></div></td>
+</ul></div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 // With Pedantic and CheckPointeeInitialization set to true
 
 struct A {
   struct B {
     int x; // note: uninitialized field 'this->b.x'
            // note: uninitialized field 'this->bptr->x'

 
 <!-- =========================== dead code alpha =========================== -->
 <h3 id="deadcode_alpha_checkers">Dead Code Alpha Checkers</h3>
 <table class="checkers">
 <colgroup><col class="namedescr"><col class="example"></colgroup>
 <thead><tr><td>Name, Description</td><td>Example</td></tr></thead>
 
 <tbody>
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.deadcode.UnreachableCode"><div class="namedescr expandable"><span class="name">
 alpha.deadcode.UnreachableCode</span><span class="lang">
 (C, C++, ObjC)</span><div class="descr">
-Check unreachable code.</div></div></td>
+Check unreachable code.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 // C
 int test() {
   int x = 1;
   while(x);
   return x; // warn
 }

 
 <!-- =========================== llvm alpha =========================== -->
 <h3 id="llvm_alpha_checkers">LLVM Checkers</h3>
 <table class="checkers">
 <colgroup><col class="namedescr"><col class="example"></colgroup>
 <thead><tr><td>Name, Description</td><td>Example</td></tr></thead>
 
 <tbody>
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.llvm.Conventions"><div class="namedescr expandable"><span class="name">
 alpha.llvm.Conventions</span><span class="lang">
 (C)</span><div class="descr">
 Check code for LLVM codebase conventions:
 <ul>
   <li>A <code>StringRef</code> should not be bound to a temporary std::string
   whose lifetime is shorter than the <code>StringRef</code>'s.</li>
   <li>Clang AST nodes should not have fields that can allocate memory.</li>
 </ul>
-</div></div></td>
+</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 <!-- TODO: Add examples, as currently it's hard to get this checker working. -->
 </pre></div></div></td></tr>
 
 </tbody></table>
 
 
 <!-- ============================== OS X alpha ============================== -->
 <h3 id="osx_alpha_checkers">OS X Alpha Checkers</h3>
 <table class="checkers">
 <colgroup><col class="namedescr"><col class="example"></colgroup>
 <thead><tr><td>Name, Description</td><td>Example</td></tr></thead>
 
 <tbody>
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.osx.cocoa.DirectIvarAssignment"><div class="namedescr expandable"><span class="name">
 alpha.osx.cocoa.DirectIvarAssignment</span><span class="lang">
 (ObjC)</span><div class="descr">
-Check that Objective C properties follow the following rule: the property 
-should be set with the setter, not though a direct assignment.</div></div></td>
+Check that Objective C properties follow the following rule: the property
+should be set with the setter, not though a direct assignment.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 @interface MyClass : NSObject {}
 @property (readonly) id A;
 - (void) foo;
 @end
 
 @implementation MyClass
 - (void) foo {
   _A = 0; // warn
 }
 @end
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.osx.cocoa.DirectIvarAssignmentForAnnotatedFunctions"><div class="namedescr expandable"><span class="name">
 alpha.osx.cocoa.DirectIvarAssignmentForAnnotatedFunctions</span><span class="lang">
 (ObjC)</span><div class="descr">
-Check for direct assignments to instance variables in the methods annotated 
-with <code>objc_no_direct_instance_variable_assignment</code>.</div></div></td>
+Check for direct assignments to instance variables in the methods annotated
+with <code>objc_no_direct_instance_variable_assignment</code>.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 @interface MyClass : NSObject {}
 @property (readonly) id A;
 - (void) fAnnotated __attribute__((
     annotate("objc_no_direct_instance_variable_assignment")));
 - (void) fNotAnnotated;
 @end
 
 @implementation MyClass
 - (void) fAnnotated {
   _A = 0; // warn
 }
 - (void) fNotAnnotated {
   _A = 0; // no warn
 }
 @end
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.osx.cocoa.InstanceVariableInvalidation"><div class="namedescr expandable"><span class="name">
 alpha.osx.cocoa.InstanceVariableInvalidation</span><span class="lang">
 (ObjC)</span><div class="descr">
 Check that the invalidatable instance variables are invalidated in the methods
-annotated with <code>objc_instance_variable_invalidator</code>.</div></div></td>
+annotated with <code>objc_instance_variable_invalidator</code>.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 @protocol Invalidation &lt;NSObject&gt;
-- (void) invalidate 
+- (void) invalidate
   __attribute__((annotate("objc_instance_variable_invalidator")));
-@end 
+@end
 
 @interface InvalidationImpObj : NSObject &lt;Invalidation&gt;
 @end
 
 @interface SubclassInvalidationImpObj : InvalidationImpObj {
   InvalidationImpObj *var;
 }
 - (void)invalidate;
 @end
 
 @implementation SubclassInvalidationImpObj
 - (void) invalidate {}
 @end
 // warn: var needs to be invalidated or set to nil
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.osx.cocoa.MissingInvalidationMethod"><div class="namedescr expandable"><span class="name">
 alpha.osx.cocoa.MissingInvalidationMethod</span><span class="lang">
 (ObjC)</span><div class="descr">
-Check that the invalidation methods are present in classes that contain 
-invalidatable instance variables.</div></div></td>
+Check that the invalidation methods are present in classes that contain
+invalidatable instance variables.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 @protocol Invalidation &lt;NSObject&gt;
-- (void)invalidate 
+- (void)invalidate
   __attribute__((annotate("objc_instance_variable_invalidator")));
 @end
 
 @interface NeedInvalidation : NSObject &lt;Invalidation&gt;
 @end
 
 @interface MissingInvalidationMethodDecl : NSObject {
   NeedInvalidation *Var; // warn
 }
 @end
 
 @implementation MissingInvalidationMethodDecl
 @end
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.osx.cocoa.localizability.PluralMisuseChecker"><div class="namedescr expandable"><span class="name">
 alpha.osx.cocoa.localizability.PluralMisuseChecker</span><span class="lang">
 (ObjC)</span><div class="descr">
-Warns against using one vs. many plural pattern in code 
+Warns against using one vs. many plural pattern in code
 when generating localized strings.
-</div></div></td>
+</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
-NSString *reminderText = 
+NSString *reminderText =
   NSLocalizedString(@"None", @"Indicates no reminders");
 if (reminderCount == 1) {
   // Warning: Plural cases are not supported across all languages.
   // Use a .stringsdict file instead
-  reminderText = 
+  reminderText =
     NSLocalizedString(@"1 Reminder", @"Indicates single reminder");
 } else if (reminderCount >= 2) {
   // Warning: Plural cases are not supported across all languages.
   // Use a .stringsdict file instead
-  reminderText = 
+  reminderText =
     [NSString stringWithFormat:
       NSLocalizedString(@"%@ Reminders", @"Indicates multiple reminders"),
         reminderCount];
 }
 </pre></div></div></td></tr>
 
 </tbody></table>
 
 <!-- =========================== security alpha =========================== -->
 <h3 id="security_alpha_checkers">Security Alpha Checkers</h3>
 <table class="checkers">
 <colgroup><col class="namedescr"><col class="example"></colgroup>
 <thead><tr><td>Name, Description</td><td>Example</td></tr></thead>
 
 <tbody>
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.security.ArrayBound"><div class="namedescr expandable"><span class="name">
 alpha.security.ArrayBound</span><span class="lang">
 (C)</span><div class="descr">
-Warn about buffer overflows (older checker).</div></div></td>
+Warn about buffer overflows (older checker).</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   char *s = "";
   char c = s[1]; // warn
 }
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 struct seven_words {
   int c[7];
 };
 
 void test() {
   struct seven_words a, *p;
   p = &a;
   p[0] = a;
   p[1] = a;
   p[2] = a; // warn
 }
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
-// note: requires unix.Malloc or 
+// note: requires unix.Malloc or
 // alpha.unix.MallocWithAnnotations checks enabled.
 void test() {
   int *p = malloc(12);
   p[3] = 4; // warn
 }
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 void test() {
   char a[2];
   int *b = (int*)a;
   b[1] = 3; // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.security.ArrayBoundV2"><div class="namedescr expandable"><span class="name">
 alpha.security.ArrayBoundV2</span><span class="lang">
 (C)</span><div class="descr">
-Warn about buffer overflows (newer checker).</div></div></td>
+Warn about buffer overflows (newer checker).</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   char *s = "";
   char c = s[1]; // warn
 }
 </pre></div><div class="separator"></div>
 <div class="example"><pre>

 void test() {
   char s[] = "abc";
   int x = getchar();
   char c = s[x]; // warn: index is tainted
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.security.MallocOverflow"><div class="namedescr expandable"><span class="name">
 alpha.security.MallocOverflow</span><span class="lang">
 (C)</span><div class="descr">
-Check for overflows in the arguments to <code>malloc()</code>.</div></div></td>
+Check for overflows in the arguments to <code>malloc()</code>.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test(int n) {
   void *p = malloc(n * sizeof(int)); // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.security.MmapWriteExec"><div class="namedescr expandable"><span class="name">
 alpha.security.MmapWriteExec</span><span class="lang">
 (C)</span><div class="descr">
 Warn on <code>mmap()<code> calls that are both writable and executable.
-</div></div></td>
+</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test(int n) {
   void *c = mmap(NULL, 32, PROT_READ | PROT_WRITE | PROT_EXEC,
                  MAP_PRIVATE | MAP_ANON, -1, 0);
   // warn: Both PROT_WRITE and PROT_EXEC flags are set. This can lead to
   //       exploitable memory regions, which could be overwritten with malicious
   //       code
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.security.ReturnPtrRange"><div class="namedescr expandable"><span class="name">
 alpha.security.ReturnPtrRange</span><span class="lang">
 (C)</span><div class="descr">
-Check for an out-of-bound pointer being returned to callers.</div></div></td>
+Check for an out-of-bound pointer being returned to callers.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 static int A[10];
 
 int *test() {
   int *p = A + 10;
   return p; // warn
 }
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 int test(void) {
   int x;
   return x; // warn: undefined or garbage returned
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.security.taint.TaintPropagation"><div class="namedescr expandable"><span class="name">
 alpha.security.taint.TaintPropagation</span><span class="lang">
 (C)</span><div class="descr">
-Generate taint information used by other checkers.</div></div></td>
+Generate taint information used by other checkers.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   char x = getchar(); // 'x' marked as tainted
   system(&x); // warn: untrusted data is passed to a system call
 }
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 // note: compiler internally checks if the second param to
-// sprintf is a string literal or not. 
+// sprintf is a string literal or not.
 // Use -Wno-format-security to suppress compiler warning.
 void test() {
   char s[10], buf[10];
   fscanf(stdin, "%s", s); // 's' marked as tainted
 
   sprintf(buf, s); // warn: untrusted data as a format string
 }
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 void test() {
   size_t ts;
   scanf("%zd", &ts); // 'ts' marked as tainted
-  int *p = (int *)malloc(ts * sizeof(int)); 
+  int *p = (int *)malloc(ts * sizeof(int));
     // warn: untrusted data as buffer size
 }
 </pre></div></div></td></tr>
 
 </tbody></table>
 
 <!-- ============================= unix alpha ============================= -->
 <h3 id="unix_alpha_checkers">Unix Alpha Checkers</h3>
 <table class="checkers">
 <colgroup><col class="namedescr"><col class="example"></colgroup>
 <thead><tr><td>Name, Description</td><td>Example</td></tr></thead>
 <tbody>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.unix.BlockInCriticalSection"><div class="namedescr expandable"><span class="name">
 alpha.unix.BlockInCriticalSection</span><span class="lang">
 (C)</span><div class="descr">
 Check for calls to blocking functions inside a critical section. Applies to:
 <div class=functions>
 lock<br>
 unlock<br>
 sleep<br>
 getc<br>
 fgets<br>
 read<br>
 revc<br>
 pthread_mutex_lock<br>
 pthread_mutex_unlock<br>
 mtx_lock<br>
 mtx_timedlock<br>
 mtx_trylock<br>
 mtx_unlock<br>
 lock_guard<br>
 unique_lock</div>
-</div></div></td>
+</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   std::mutex m;
   m.lock();
   sleep(3); // warn: a blocking function sleep is called inside a critical
             //       section
   m.unlock();
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.unix.Chroot"><div class="namedescr expandable"><span class="name">
 alpha.unix.Chroot</span><span class="lang">
 (C)</span><div class="descr">
-Check improper use of <code>chroot</code>.</div></div></td>
+Check improper use of <code>chroot</code>.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void f();
 
 void test() {
   chroot("/usr/local");
   f(); // warn: no call of chdir("/") immediately after chroot
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.unix.PthreadLock"><div class="namedescr expandable"><span class="name">
 alpha.unix.PthreadLock</span><span class="lang">
 (C)</span><div class="descr">
 Simple lock -> unlock checker; applies to:<div class=functions>
 pthread_mutex_lock<br>
 pthread_rwlock_rdlock<br>
 pthread_rwlock_wrlock<br>
 lck_mtx_lock<br>
 lck_rw_lock_exclusive<br>
 lck_rw_lock_shared<br>
 pthread_mutex_trylock<br>
 pthread_rwlock_tryrdlock<br>
 pthread_rwlock_tryrwlock<br>
 lck_mtx_try_lock<br>
 lck_rw_try_lock_exclusive<br>
 lck_rw_try_lock_shared<br>
 pthread_mutex_unlock<br>
 pthread_rwlock_unlock<br>
 lck_mtx_unlock<br>
-lck_rw_done</div></div></div></td>
+lck_rw_done</div></div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 pthread_mutex_t mtx;
 
 void test() {
   pthread_mutex_lock(&mtx);
-  pthread_mutex_lock(&mtx); 
+  pthread_mutex_lock(&mtx);
     // warn: this lock has already been acquired
 }
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 lck_mtx_t lck1, lck2;
 
 void test() {
   lck_mtx_lock(&lck1);
   lck_mtx_lock(&lck2);
-  lck_mtx_unlock(&lck1); 
+  lck_mtx_unlock(&lck1);
     // warn: this was not the most recently acquired lock
 }
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 lck_mtx_t lck1, lck2;
 
 void test() {
   if (lck_mtx_try_lock(&lck1) == 0)
     return;
 
   lck_mtx_lock(&lck2);
   lck_mtx_unlock(&lck1);
     // warn: this was not the most recently acquired lock
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.unix.SimpleStream"><div class="namedescr expandable"><span class="name">
 alpha.unix.SimpleStream</span><span class="lang">
 (C)</span><div class="descr">
 Check for misuses of stream APIs:<div class=functions>
 fopen<br>
 fclose</div>(demo checker, the subject of the demo
 (<a href="http://llvm.org/devmtg/2012-11/Zaks-Rose-Checker24Hours.pdf">Slides</a>
 ,<a href="https://youtu.be/kdxlsP5QVPw">Video</a>)
 by Anna Zaks and Jordan Rose presented at the <a href="http://llvm.org/devmtg/2012-11/">
-2012 LLVM Developers' Meeting).</a></div></div></td>
+2012 LLVM Developers' Meeting).</a></div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   FILE *F = fopen("myfile.txt", "w");
 } // warn: opened file is never closed
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 void test() {
   FILE *F = fopen("myfile.txt", "w");
 
   if (F)
     fclose(F);
 
   fclose(F); // warn: closing a previously closed file stream
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.unix.Stream"><div class="namedescr expandable"><span class="name">
 alpha.unix.Stream</span><span class="lang">
 (C)</span><div class="descr">
 Check stream handling functions:<div class=functions>fopen<br>
 tmpfile<br>
 fclose<br>
 fread<br>
 fwrite<br>
 fseek<br>
 ftell<br>
 rewind<br>
 fgetpos<br>
 fsetpos<br>
 clearerr<br>
 feof<br>
 ferror<br>
-fileno</div></div></div></td>
+fileno</div></div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   FILE *p = fopen("foo", "r");
 } // warn: opened file is never closed
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 void test() {
   FILE *p = fopen("foo", "r");
   fseek(p, 1, SEEK_SET); // warn: stream pointer might be NULL
-  fclose(p); 
+  fclose(p);
 }
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 void test() {
   FILE *p = fopen("foo", "r");
 
   if (p)
     fseek(p, 1, 3);
      // warn: third arg should be SEEK_SET, SEEK_END, or SEEK_CUR
 
-  fclose(p); 
+  fclose(p);
 }
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 void test() {
   FILE *p = fopen("foo", "r");
-  fclose(p); 
+  fclose(p);
   fclose(p); // warn: already closed
 }
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 void test() {
   FILE *p = tmpfile();
   ftell(p); // warn: stream pointer might be NULL
   fclose(p);
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.unix.cstring.BufferOverlap"><div class="namedescr expandable"><span class="name">
 alpha.unix.cstring.BufferOverlap</span><span class="lang">
 (C)</span><div class="descr">
 Checks for overlap in two buffer arguments; applies to:<div class=functions>
 memcpy<br>
-mempcpy</div></div></div></td>
+mempcpy</div></div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   int a[4] = {0};
   memcpy(a + 2, a + 1, 8); // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.unix.cstring.NotNullTerminated"><div class="namedescr expandable"><span class="name">
 alpha.unix.cstring.NotNullTerminated</span><span class="lang">
 (C)</span><div class="descr">
 Check for arguments which are not null-terminated strings; applies
 to:<div class=functions>
 strlen<br>
 strnlen<br>
 strcpy<br>
 strncpy<br>
 strcat<br>
 strncat</div></div></div></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   int y = strlen((char *)&test); // warn
 }
-</pre></div></div></td></tr>
+</pre></div></div></a></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="alpha.unix.cstring.OutOfBounds"><div class="namedescr expandable"><span class="name">
 alpha.unix.cstring.OutOfBounds</span><span class="lang">
 (C)</span><div class="descr">
 Check for out-of-bounds access in string functions; applies
 to:<div class=functions>
 strncopy<br>
-strncat</div></div></div></td>
+strncat</div></div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test(char *y) {
   char x[4];
   if (strlen(y) == 4)
     strncpy(x, y, 5); // warn
 }
 </pre></div></div></td></tr>
 
 </tbody></table>
 
 </div> <!-- page -->
 </div> <!-- content -->
 </body>
 </html>

www/analyzer/available_checks.html

 
 <!-- =========================== core =========================== -->
 <h3 id="core_checkers">Core Checkers</h3>
 <table class="checkers">
 <colgroup><col class="namedescr"><col class="example"></colgroup>
 <thead><tr><td>Name, Description</td><td>Example</td></tr></thead>
 
 <tbody>
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="core.CallAndMessage"><div class="namedescr expandable"><span class="name">
 core.CallAndMessage</span><span class="lang">
 (C, C++, ObjC)</span><div class="descr">
 Check for logical errors for function calls and Objective-C message expressions
-(e.g., uninitialized arguments, null function pointers).</div></div></td>
+(e.g., uninitialized arguments, null function pointers).</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 // C
 struct S {
   int x;
 };
 
 void f(struct S s);

 
 void test() {
   MyClass *obj1;
   id i = obj1[0]; // warn: uninitialized object pointer
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="core.DivideZero"><div class="namedescr expandable"><span class="name">
 core.DivideZero</span><span class="lang">
 (C, C++, ObjC)</span><div class="descr">
-Check for division by zero.</div></div></td>
+Check for division by zero.</div></div></a>co</td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test(int z) {
   if (z == 0)
     int x = 1 / z; // warn
 }
 </pre></div>
 <div class="example"><pre>
 void test() {
   int x = 1;
   int y = x % 0; // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="core.NonNullParamChecker"><div class="namedescr expandable"><span class="name">
 core.NonNullParamChecker</span><span class="lang">
 (C, C++, ObjC)</span><div class="descr">
 Check for null pointers passed as arguments to a function whose arguments are
-marked with the <code>nonnull</code> attribute.</div></div></td>
+marked with the <code>nonnull</code> attribute.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 int f(int *p) __attribute__((nonnull));
 
 void test(int *p) {
   if (!p)
     f(p); // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="core.NullDereference"><div class="namedescr expandable"><span class="name">
 core.NullDereference</span><span class="lang">
 (C, C++, ObjC)</span><div class="descr">
-Check for dereferences of null pointers.</div></div></td>
+Check for dereferences of null pointers.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 // C
 void test(int *p) {
   if (p)
     return;
 
   int x = p[0]; // warn

 
 void test() {
   MyClass *obj = 0;
   obj-&gt;x = 1; // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="core.StackAddressEscape"><div class="namedescr expandable"><span class="name">
 core.StackAddressEscape</span><span class="lang">
 (C)</span><div class="descr">
-Check that addresses of stack memory do not escape the function.</div></div></td>
+Check that addresses of stack memory do not escape the function.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 char const *p;
 
 void test() {
   char const str[] = "string";
   p = str; // warn
 }
 </pre></div>
 <div class="example"><pre>
 void* test() {
    return __builtin_alloca(12); // warn
 }
 </pre></div>
 <div class="example"><pre>
 void test() {
   static int *x;
   int y;
   x = &amp;y; // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="core.UndefinedBinaryOperatorResult"><div class="namedescr expandable"><span class="name">
 core.UndefinedBinaryOperatorResult</span><span class="lang">
 (C)</span><div class="descr">
-Check for undefined results of binary operators.</div></div></td>
+Check for undefined results of binary operators.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   int x;
   int y = x + 1; // warn: left operand is garbage
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="core.VLASize"><div class="namedescr expandable"><span class="name">
 core.VLASize</span><span class="lang">
 (C)</span><div class="descr">
-Check for declarations of VLA of undefined or zero size.</div></div></td>
+Check for declarations of VLA of undefined or zero size.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   int x;
   int vla1[x]; // warn: garbage as size
 }
 </pre></div>
 <div class="example"><pre>
 void test() {
   int x = 0;
   int vla2[x]; // warn: zero size
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="core.uninitialized.ArraySubscript"><div class="namedescr expandable"><span class="name">
 core.uninitialized.ArraySubscript</span><span class="lang">
 (C)</span><div class="descr">
-Check for uninitialized values used as array subscripts.</div></div></td>
+Check for uninitialized values used as array subscripts.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   int i, a[10];
   int x = a[i]; // warn: array subscript is undefined
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="core.uninitialized.Assign"><div class="namedescr expandable"><span class="name">
 core.uninitialized.Assign</span><span class="lang">
 (C)</span><div class="descr">
-Check for assigning uninitialized values.</div></div></td>
+Check for assigning uninitialized values.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   int x;
   x |= 1; // warn: left expression is uninitialized
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="core.uninitialized.Branch"><div class="namedescr expandable"><span class="name">
 core.uninitialized.Branch</span><span class="lang">
 (C)</span><div class="descr">
-Check for uninitialized values used as branch conditions.</div></div></td>
+Check for uninitialized values used as branch conditions.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   int x;
   if (x) // warn
     return;
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="core.uninitialized.CapturedBlockVariable"><div class="namedescr expandable"><span class="name">
 core.uninitialized.CapturedBlockVariable</span><span class="lang">
 (C)</span><div class="descr">
-Check for blocks that capture uninitialized values.</div></div></td>
+Check for blocks that capture uninitialized values.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   int x;
   ^{ int y = x; }(); // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="core.uninitialized.UndefReturn"><div class="namedescr expandable"><span class="name">
 core.uninitialized.UndefReturn</span><span class="lang">
 (C)</span><div class="descr">
-Check for uninitialized values being returned to the caller.</div></div></td>
+Check for uninitialized values being returned to the caller.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 int test() {
   int x;
   return x; // warn
 }
 </pre></div></div></td></tr>
 
 </tbody></table>
 
 <!-- =========================== C++ =========================== -->
 <h3 id="cplusplus_checkers">C++ Checkers</h3>
 <table class="checkers">
 <colgroup><col class="namedescr"><col class="example"></colgroup>
 <thead><tr><td>Name, Description</td><td>Example</td></tr></thead>
 
 <tbody>
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="cplusplus.NewDelete"><div class="namedescr expandable"><span class="name">
 cplusplus.NewDelete</span><span class="lang">
 (C++)</span><div class="descr">
 Check for double-free, use-after-free and offset problems involving C++ <code>
-delete</code>.</div></div></td>
+delete</code>.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void f(int *p);
 
 void testUseMiddleArgAfterDelete(int *p) {
   delete p;
   f(p); // warn: use after free
 }

 void test() {
   int *p = new int[1];
   delete[] (++p);
     // warn: argument to 'delete[]' is offset by 4 bytes
     // from the start of memory allocated by 'new[]'
 }
 </pre></div></div></td></tr>
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="cplusplus.NewDeleteLeaks"><div class="namedescr expandable"><span class="name">
 cplusplus.NewDeleteLeaks</span><span class="lang">
 (C++)</span><div class="descr">
 Check for memory leaks. Traces memory managed by <code>new</code>/<code>
-delete</code>.</div></div></td>
+delete</code>.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   int *p = new int;
 } // warn
 </pre></div></div></td></tr>
 
 </tbody></table>
 
 <!-- =========================== dead code =========================== -->
 <h3 id="deadcode_checkers">Dead Code Checkers</h3>
 <table class="checkers">
 <colgroup><col class="namedescr"><col class="example"></colgroup>
 <thead><tr><td>Name, Description</td><td>Example</td></tr></thead>
 
 <tbody>
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="deadcode.DeadStores"><div class="namedescr expandable"><span class="name">
 deadcode.DeadStores</span><span class="lang">
 (C)</span><div class="descr">
-Check for values stored to variables that are never read afterwards.</div></div></td>
+Check for values stored to variables that are never read afterwards.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   int x;
   x = 1; // warn
 }
 </pre></div></div></td></tr>
 
 </tbody></table>
 
 <!-- =========================== nullability =========================== -->
 <h3 id="nullability_checkers">Nullability Checkers</h3>
 <table class="checkers">
 <colgroup><col class="namedescr"><col class="example"></colgroup>
 <thead><tr><td>Name, Description</td><td>Example</td></tr></thead>
 
 <tbody>
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="nullability.NullPassedToNonnull"><div class="namedescr expandable"><span class="name">
 nullability.NullPassedToNonnull</span><span class="lang">
 (ObjC)</span><div class="descr">
-Warns when a null pointer is passed to a pointer which has a 
-_Nonnull type.</div></div></td>
+Warns when a null pointer is passed to a pointer which has a
+_Nonnull type.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 if (name != nil)
   return;
 // Warning: nil passed to a callee that requires a non-null 1st parameter
 NSString *greeting = [@"Hello " stringByAppendingString:name];
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="nullability.NullReturnedFromNonnull"><div class="namedescr expandable"><span class="name">
 nullability.NullReturnedFromNonnull</span><span class="lang">
 (ObjC)</span><div class="descr">
-Warns when a null pointer is returned from a function that has 
-_Nonnull return type.</div></div></td>
+Warns when a null pointer is returned from a function that has
+_Nonnull return type.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 - (nonnull id)firstChild {
   id result = nil;
   if ([_children count] > 0)
     result = _children[0];
 
-  // Warning: nil returned from a method that is expected 
+  // Warning: nil returned from a method that is expected
   // to return a non-null value
   return result;
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="nullability.NullableDereferenced"><div class="namedescr expandable"><span class="name">
 nullability.NullableDereferenced</span><span class="lang">
 (ObjC)</span><div class="descr">
-Warns when a nullable pointer is dereferenced.</div></div></td>
+Warns when a nullable pointer is dereferenced.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 struct LinkedList {
   int data;
   struct LinkedList *next;
 };
 
 struct LinkedList * _Nullable getNext(struct LinkedList *l);
 
 void updateNextData(struct LinkedList *list, int newData) {
   struct LinkedList *next = getNext(list);
   // Warning: Nullable pointer is dereferenced
   next->data = 7;
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="nullability.NullablePassedToNonnull"><div class="namedescr expandable"><span class="name">
 nullability.NullablePassedToNonnull</span><span class="lang">
 (ObjC)</span><div class="descr">
-Warns when a nullable pointer is passed to a pointer which has a _Nonnull type.</div></div></td>
+Warns when a nullable pointer is passed to a pointer which has a _Nonnull type.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 typedef struct Dummy { int val; } Dummy;
 Dummy *_Nullable returnsNullable();
 void takesNonnull(Dummy *_Nonnull);
 
 void test() {
   Dummy *p = returnsNullable();
   takesNonnull(p); // warn
 }
 </pre></div></div></td></tr>
 
 </tbody></table>
 
 <!-- =========================== optin =========================== -->
 <h3 id="optin_checkers">Optin Checkers</h3>
 <table class="checkers">
 <colgroup><col class="namedescr"><col class="example"></colgroup>
 <thead><tr><td>Name, Description</td><td>Example</td></tr></thead>
 
 
 <tbody>
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="optin.cplusplus.VirtualCall"><div class="namedescr expandable"><span class="name">
 optin.cplusplus.VirtualCall</span><span class="lang">
 (C++)</span><div class="descr">
-Check virtual member function calls during construction or 
-destruction.</div></div></td>
+Check virtual member function calls during construction or
+destruction.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 class A {
 public:
-  A() { 
+  A() {
     f(); // warn
   }
   virtual void f();
 };
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 class A {
 public:
   ~A() {
     this-&gt;f(); // warn
   }
   virtual void f();
 };
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="optin.mpi.MPI-Checker"><div class="namedescr expandable"><span class="name">
 optin.mpi.MPI-Checker</span><span class="lang">
 (C)</span><div class="descr">
-Checks MPI code</div></div></td>
+Checks MPI code</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   double buf = 0;
   MPI_Request sendReq1;
-  MPI_Ireduce(MPI_IN_PLACE, &buf, 1, MPI_DOUBLE, MPI_SUM, 
+  MPI_Ireduce(MPI_IN_PLACE, &buf, 1, MPI_DOUBLE, MPI_SUM,
       0, MPI_COMM_WORLD, &sendReq1);
 } // warn: request 'sendReq1' has no matching wait.
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 void test() {
   double buf = 0;
   MPI_Request sendReq;
   MPI_Isend(&buf, 1, MPI_DOUBLE, 0, 0, MPI_COMM_WORLD, &sendReq);
   MPI_Irecv(&buf, 1, MPI_DOUBLE, 0, 0, MPI_COMM_WORLD, &sendReq); // warn
   MPI_Isend(&buf, 1, MPI_DOUBLE, 0, 0, MPI_COMM_WORLD, &sendReq); // warn
   MPI_Wait(&sendReq, MPI_STATUS_IGNORE);
 }
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 void missingNonBlocking() {
   int rank = 0;
   MPI_Comm_rank(MPI_COMM_WORLD, &rank);
   MPI_Request sendReq1[10][10][10];
   MPI_Wait(&sendReq1[1][7][9], MPI_STATUS_IGNORE); // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="optin.osx.cocoa.localizability.EmptyLocalizationContextChecker"><div class="namedescr expandable"><span class="name">
 optin.osx.cocoa.localizability.EmptyLocalizationContextChecker</span><span class="lang">
 (ObjC)</span><div class="descr">
-Check that NSLocalizedString macros include a comment for context.</div></div></td>
+Check that NSLocalizedString macros include a comment for context.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 - (void)test {
   NSString *string = NSLocalizedString(@"LocalizedString", nil); // warn
   NSString *string2 = NSLocalizedString(@"LocalizedString", @" "); // warn
   NSString *string3 = NSLocalizedStringWithDefaultValue(
     @"LocalizedString", nil, [[NSBundle alloc] init], nil,@""); // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="optin.osx.cocoa.localizability.NonLocalizedStringChecker"><div class="namedescr expandable"><span class="name">
 optin.osx.cocoa.localizability.NonLocalizedStringChecker</span><span class="lang">
 (ObjC)</span><div class="descr">
-Warns about uses of non-localized NSStrings passed to UI methods 
-expecting localized NSStrings</div></div></td>
+Warns about uses of non-localized NSStrings passed to UI methods
+expecting localized NSStrings</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
-NSString *alarmText = 
+NSString *alarmText =
   NSLocalizedString(@"Enabled", @"Indicates alarm is turned on");
 if (!isEnabled) {
   alarmText = @"Disabled";
 }
 UILabel *alarmStateLabel = [[UILabel alloc] init];
 
 // Warning: User-facing text should use localized string macro
 [alarmStateLabel setText:alarmText];
 </pre></div></div></td></tr>
 
 </tbody></table>
 
 <!-- =========================== OS X =========================== -->
 <h3 id="osx_checkers">OS X Checkers</h3>
 <table class="checkers">
 <colgroup><col class="namedescr"><col class="example"></colgroup>
 <thead><tr><td>Name, Description</td><td>Example</td></tr></thead>
 
 <tbody>
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.API"><div class="namedescr expandable"><span class="name">
 osx.API</span><span class="lang">
 (C)</span><div class="descr">
 Check for proper uses of various Apple APIs:<div class=functions>
-dispatch_once</div></div></div></td>
+dispatch_once</div></div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   dispatch_once_t pred = 0;
   dispatch_once(&amp;pred, ^(){}); // warn: dispatch_once uses local
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.NumberObjectConversion"><div class="namedescr expandable"><span class="name">
 osx.NumberObjectConversion</span><span class="lang">
 (C, C++, ObjC)</span><div class="descr">
-Check for erroneous conversions of objects representing numbers 
-into numbers</div></div></td>
+Check for erroneous conversions of objects representing numbers
+into numbers</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 NSNumber *photoCount = [albumDescriptor objectForKey:@"PhotoCount"];
-// Warning: Comparing a pointer value of type 'NSNumber *' 
+// Warning: Comparing a pointer value of type 'NSNumber *'
 // to a scalar integer value
 if (photoCount > 0) {
   [self displayPhotos];
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.SecKeychainAPI"><div class="namedescr expandable"><span class="name">
 osx.SecKeychainAPI</span><span class="lang">
 (C)</span><div class="descr">
 Check for improper uses of the Security framework's Keychain APIs:<div class=functions>
 SecKeychainItemCopyContent<br>
 SecKeychainFindGenericPassword<br>
 SecKeychainFindInternetPassword<br>
 SecKeychainItemFreeContent<br>
 SecKeychainItemCopyAttributesAndData<br>
-SecKeychainItemFreeAttributesAndData</div></div></div></td>
+SecKeychainItemFreeAttributesAndData</div></div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   unsigned int *ptr = 0;
   UInt32 length;
 
   SecKeychainItemFreeContent(ptr, &amp;length);
     // warn: trying to free data which has not been allocated
SecKeychainItemCopyAttributesAndData(itemRef, info,
                                          length, &amp;outData);
 
   SecKeychainItemFreeContent(attrList, outData);
     // warn: deallocator doesn't match the allocator
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.cocoa.AtSync"><div class="namedescr expandable"><span class="name">
 osx.cocoa.AtSync</span><span class="lang">
 (ObjC)</span><div class="descr">
-Check for nil pointers used as mutexes for <code>@synchronized</code>.</div></div></td>
+Check for nil pointers used as mutexes for <code>@synchronized</code>.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test(id x) {
   if (!x)
     @synchronized(x) {} // warn: nil value used as mutex
 }
 </pre></div>
 <div class="example"><pre>
 void test() {
   id y;
   @synchronized(y) {} // warn: uninitialized value used as mutex
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.cocoa.ClassRelease"><div class="namedescr expandable"><span class="name">
 osx.cocoa.ClassRelease</span><span class="lang">
 (ObjC)</span><div class="descr">
 Check for sending <code>retain</code>, <code>release</code>, or <code>
-autorelease</code> directly to a class.</div></div></td>
+autorelease</code> directly to a class.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 @interface MyClass : NSObject
 @end
 
 void test(void) {
   [MyClass release]; // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.cocoa.Dealloc"><div class="namedescr expandable"><span class="name">
 osx.cocoa.Dealloc</span><span class="lang">
 (ObjC)</span><div class="descr">
-Warn about Objective-C classes that lack a correct implementation 
+Warn about Objective-C classes that lack a correct implementation
 of <code>-dealloc</code>.
-</div></div></td>
+</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 @interface MyObject : NSObject {
-  id _myproperty;  
+  id _myproperty;
 }
 @end
 
 @implementation MyObject // warn: lacks 'dealloc'
 @end
 </pre></div><div class="separator"></div>
 <div class="example"><pre>
 @interface MyObject : NSObject {}

 - (void)dealloc {
   [_myproperty release];
   [super dealloc];
 }
 @end
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.cocoa.IncompatibleMethodTypes"><div class="namedescr expandable"><span class="name">
 osx.cocoa.IncompatibleMethodTypes</span><span class="lang">
 (ObjC)</span><div class="descr">
-Check for an incompatible type signature when overriding an Objective-C method.</div></div></td>
+Check for an incompatible type signature when overriding an Objective-C method.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 @interface MyClass1 : NSObject
 - (int)foo;
 @end
 
 @implementation MyClass1
 - (int)foo { return 1; }
 @end
 
 @interface MyClass2 : MyClass1
 - (float)foo;
 @end
 
 @implementation MyClass2
 - (float)foo { return 1.0; } // warn
 @end
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
-alpha.osx.cocoa.MissingSuperCall</span><span class="lang">
+<tr><td><a id="osx.cocoa.MissingSuperCall"><div class="namedescr expandable"><span class="name">
+osx.cocoa.MissingSuperCall</span><span class="lang">
 (ObjC)</span><div class="descr">
 Warn about Objective-C methods that lack a necessary call to super. (Note: The
 compiler now has a warning for methods annotated with <code>objc_requires_super</code>
 attribute. The checker exists to check methods in the Cocoa frameworks
-that haven't yet adopted this attribute.)</div></div></td>
+that haven't yet adopted this attribute.)</div></div></a></td>
 <td><div class="example"><pre>
 @interface Test : UIViewController
 @end
 @implementation test
 - (void)viewDidLoad {} // warn
 @end
 </pre></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.cocoa.NSAutoreleasePool"><div class="namedescr expandable"><span class="name">
 osx.cocoa.NSAutoreleasePool</span><span class="lang">
 (ObjC)</span><div class="descr">
 Warn for suboptimal uses of NSAutoreleasePool in Objective-C
-GC mode (<code>-fobjc-gc</code> compiler option).</div></div></td>
+GC mode (<code>-fobjc-gc</code> compiler option).</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
   [pool release]; // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.cocoa.NSError"><div class="namedescr expandable"><span class="name">
 osx.cocoa.NSError</span><span class="lang">
 (ObjC)</span><div class="descr">
-Check usage of <code>NSError**</code> parameters.</div></div></td>
+Check usage of <code>NSError**</code> parameters.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 @interface A : NSObject
 - (void)foo:(NSError **)error;
 @end
 
 @implementation A
 - (void)foo:(NSError **)error {

 - (BOOL)foo:(NSError **)error {
   *error = 0; // warn: potential null dereference
   return 0;
 }
 @end
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.cocoa.NilArg"><div class="namedescr expandable"><span class="name">
 osx.cocoa.NilArg</span><span class="lang">
 (ObjC)</span><div class="descr">
 Check for prohibited nil arguments in specific Objective-C method calls:<div class=functions>
 - caseInsensitiveCompare:<br>
 - compare:<br>
 - compare:options:<br>
 - compare:options:range:<br>
 - compare:options:range:locale:<br>
 - componentsSeparatedByCharactersInSet:<br>
-- initWithFormat:</div></div></div></td>
+- initWithFormat:</div></div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 NSComparisonResult test(NSString *s) {
   NSString *aString = nil;
   return [s caseInsensitiveCompare:aString];
     // warn: argument to 'NSString' method
     // 'caseInsensitiveCompare:' cannot be nil
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.cocoa.ObjCGenerics"><div class="namedescr expandable"><span class="name">
 osx.cocoa.ObjCGenerics</span><span class="lang">
 (ObjC)</span><div class="descr">
-Check for type errors when using Objective-C generics</div></div></td>
+Check for type errors when using Objective-C generics</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 NSMutableArray<NSString *> *names = [NSMutableArray array];
 NSMutableArray *birthDates = names;
 
-// Warning: Conversion from value of type 'NSDate *' 
+// Warning: Conversion from value of type 'NSDate *'
 // to incompatible type 'NSString *'
 [birthDates addObject: [NSDate date]];
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.cocoa.RetainCount"><div class="namedescr expandable"><span class="name">
 osx.cocoa.RetainCount</span><span class="lang">
 (ObjC)</span><div class="descr">
-Check for leaks and violations of the Cocoa Memory Management rules.</div></div></td>
+Check for leaks and violations of the Cocoa Memory Management rules.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   NSString *s = [[NSString alloc] init]; // warn
 }
 </pre></div>
 <div class="example"><pre>
 CFStringRef test(char *bytes) {
   return CFStringCreateWithCStringNoCopy(
            0, bytes, NSNEXTSTEPStringEncoding, 0); // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.cocoa.SelfInit"><div class="namedescr expandable"><span class="name">
 osx.cocoa.SelfInit</span><span class="lang">
 (ObjC)</span><div class="descr">
 Check that <code>self</code> is properly initialized inside an initializer
-method.</div></div></td>
+method.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 @interface MyObj : NSObject {
   id x;
 }
 - (id)init;
 @end
 

 - (id)init {
   [super init];
   return self; // warn: returning uninitialized 'self'
 }
 @end
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.cocoa.SuperDealloc"><div class="namedescr expandable"><span class="name">
 osx.cocoa.SuperDealloc</span><span class="lang">
 (ObjC)</span><div class="descr">
-Warn about improper use of '[super dealloc]' in Objective-C</div></div></td>
+Warn about improper use of '[super dealloc]' in Objective-C</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 @interface SuperDeallocThenReleaseIvarClass : NSObject {
   NSObject *_ivar;
 }
 @end
 
 @implementation SuperDeallocThenReleaseIvarClass
 - (void)dealloc {
   [super dealloc];
   [_ivar release]; // warn
 }
 @end
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.cocoa.UnusedIvars"><div class="namedescr expandable"><span class="name">
 osx.cocoa.UnusedIvars</span><span class="lang">
 (ObjC)</span><div class="descr">
-Warn about private ivars that are never used.</div></div></td>
+Warn about private ivars that are never used.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 @interface MyObj : NSObject {
 @private
   id x; // warn
 }
 @end
 
 @implementation MyObj
 @end
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.cocoa.VariadicMethodTypes"><div class="namedescr expandable"><span class="name">
 osx.cocoa.VariadicMethodTypes</span><span class="lang">
 (ObjC)</span><div class="descr">
 Check for passing non-Objective-C types to variadic collection initialization
-methods that expect only Objective-C types.</div></div></td>
+methods that expect only Objective-C types.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   [NSSet setWithObjects:@"Foo", "Bar", nil];
     // warn: argument should be an ObjC pointer type, not 'char *'
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.coreFoundation.CFError"><div class="namedescr expandable"><span class="name">
 osx.coreFoundation.CFError</span><span class="lang">
 (C)</span><div class="descr">
-Check usage of <code>CFErrorRef*</code> parameters.</div></div></td>
+Check usage of <code>CFErrorRef*</code> parameters.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test(CFErrorRef *error) {
   // warn: function accepting CFErrorRef* should have a
   // non-void return
 }
 </pre></div>
 <div class="example"><pre>
 int foo(CFErrorRef *error) {
   *error = 0; // warn: potential null dereference
   return 0;
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.coreFoundation.CFNumber"><div class="namedescr expandable"><span class="name">
 osx.coreFoundation.CFNumber</span><span class="lang">
 (C)</span><div class="descr">
-Check for improper uses of <code>CFNumberCreate</code>.</div></div></td>
+Check for improper uses of <code>CFNumberCreate</code>.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 CFNumberRef test(unsigned char x) {
   return CFNumberCreate(0, kCFNumberSInt16Type, &amp;x);
    // warn: 8 bit integer is used to initialize a 16 bit integer
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.coreFoundation.CFRetainRelease"><div class="namedescr expandable"><span class="name">
 osx.coreFoundation.CFRetainRelease</span><span class="lang">
 (C)</span><div class="descr">
 Check for null arguments to <code>CFRetain</code>, <code>CFRelease</code>,
-<code>CFMakeCollectable</code>.</div></div></td>
+<code>CFMakeCollectable</code>.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test(CFTypeRef p) {
   if (!p)
     CFRetain(p); // warn
 }
 </pre></div>
 <div class="example"><pre>
 void test(int x, CFTypeRef p) {
   if (p)
     return;
 
   CFRelease(p); // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.coreFoundation.containers.OutOfBounds"><div class="namedescr expandable"><span class="name">
 osx.coreFoundation.containers.OutOfBounds</span><span class="lang">
 (C)</span><div class="descr">
-Checks for index out-of-bounds when using <code>CFArray</code> API.</div></div></td>
+Checks for index out-of-bounds when using <code>CFArray</code> API.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   CFArrayRef A = CFArrayCreate(0, 0, 0, &amp;kCFTypeArrayCallBacks);
   CFArrayGetValueAtIndex(A, 0); // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="osx.coreFoundation.containers.PointerSizedValues"><div class="namedescr expandable"><span class="name">
 osx.coreFoundation.containers.PointerSizedValues</span><span class="lang">
 (C)</span><div class="descr">
 Warns if <code>CFArray</code>, <code>CFDictionary</code>, <code>CFSet</code> are
-created with non-pointer-size values.</div></div></td>
+created with non-pointer-size values.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   int x[] = { 1 };
   CFArrayRef A = CFArrayCreate(0, (const void **)x, 1,
                                &amp;kCFTypeArrayCallBacks); // warn
 }
 </pre></div></div></td></tr>
 
 </tbody></table>
 
 <!-- =========================== security =========================== -->
 <h3 id="security_checkers">Security Checkers</h3>
 <table class="checkers">
 <colgroup><col class="namedescr"><col class="example"></colgroup>
 <thead><tr><td>Name, Description</td><td>Example</td></tr></thead>
 
 <tbody>
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="security.FloatLoopCounter"><div class="namedescr expandable"><span class="name">
 security.FloatLoopCounter</span><span class="lang">
 (C)</span><div class="descr">
 Warn on using a floating point value as a loop counter (CERT: FLP30-C,
-FLP30-CPP).</div></div></td>
+FLP30-CPP).</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   for (float x = 0.1f; x <= 1.0f; x += 0.1f) {} // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="security.insecureAPI.UncheckedReturn"><div class="namedescr expandable"><span class="name">
 security.insecureAPI.UncheckedReturn</span><span class="lang">
 (C)</span><div class="descr">
 Warn on uses of functions whose return values must be always checked:<div class=functions>
 setuid<br>
 setgid<br>
 seteuid<br>
 setegid<br>
 setreuid<br>
-setregid</div></div></div></td>
+setregid</div></div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   setuid(1); // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="security.insecureAPI.bcmp"><div class="namedescr expandable"><span class="name">
 security.insecureAPI.bcmp</span><span class="lang">
 (C)</span><div class="descr">
-Warn on uses of the <code>bcmp</code> function.</div></div></td>
+Warn on uses of the <code>bcmp</code> function.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   bcmp(ptr0, ptr1, n); // warn
 }
 </pre></div></div></td></tr>
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="security.insecureAPI.bcopy"><div class="namedescr expandable"><span class="name">
 security.insecureAPI.bcopy</span><span class="lang">
 (C)</span><div class="descr">
-Warn on uses of the <code>bcopy</code> function.</div></div></td>
+Warn on uses of the <code>bcopy</code> function.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   bcopy(src, dst, n); // warn
 }
 </pre></div></div></td></tr>
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="security.insecureAPI.bzero"><div class="namedescr expandable"><span class="name">
 security.insecureAPI.bzero</span><span class="lang">
 (C)</span><div class="descr">
-Warn on uses of the <code>bzero</code> function.</div></div></td>
+Warn on uses of the <code>bzero</code> function.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   bzero(ptr, n); // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="security.insecureAPI.getpw"><div class="namedescr expandable"><span class="name">
 security.insecureAPI.getpw</span><span class="lang">
 (C)</span><div class="descr">
-Warn on uses of the <code>getpw</code> function.</div></div></td>
+Warn on uses of the <code>getpw</code> function.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   char buff[1024];
   getpw(2, buff); // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="security.insecureAPI.gets"><div class="namedescr expandable"><span class="name">
 security.insecureAPI.gets</span><span class="lang">
 (C)</span><div class="descr">
-Warn on uses of the <code>gets</code> function.</div></div></td>
+Warn on uses of the <code>gets</code> function.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   char buff[1024];
   gets(buff); // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="security.insecureAPI.mkstemp"><div class="namedescr expandable"><span class="name">
 security.insecureAPI.mkstemp</span><span class="lang">
 (C)</span><div class="descr">
 Warn when <code>mktemp</code>, <code>mkstemp</code>, <code>mkstemps</code> or
 <code>mkdtemp</code> is passed fewer than 6
-X's in the format string.</div></div></td>
+X's in the format string.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   mkstemp("XX"); // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="security.insecureAPI.mktemp"><div class="namedescr expandable"><span class="name">
 security.insecureAPI.mktemp</span><span class="lang">
 (C)</span><div class="descr">
-Warn on uses of the <code>mktemp</code> function.</div></div></td>
+Warn on uses of the <code>mktemp</code> function.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   char *x = mktemp("/tmp/zxcv"); // warn: insecure, use mkstemp
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="security.insecureAPI.rand"><div class="namedescr expandable"><span class="name">
 security.insecureAPI.rand</span><span class="lang">
 (C)</span><div class="descr">
 Warn on uses of inferior random number generating functions (only if <code>arc4random</code>
 function is available):<div class=functions>
 drand48<br>
 erand48<br>
 jrand48<br>
 lcong48<br>
 lrand48<br>
 mrand48<br>
 nrand48<br>
 random<br>
-rand_r</div></div></div></td>
+rand_r</div></div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   random(); // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="security.insecureAPI.strcpy"><div class="namedescr expandable"><span class="name">
 security.insecureAPI.strcpy</span><span class="lang">
 (C)</span><div class="descr">
-Warn on uses of the <code>strcpy</code> and <code>strcat</code> functions.</div></div></td>
+Warn on uses of the <code>strcpy</code> and <code>strcat</code> functions.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   char x[4];
   char *y = "abcd";
 
   strcpy(x, y); // warn
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="security.insecureAPI.vfork"><div class="namedescr expandable"><span class="name">
 security.insecureAPI.vfork</span><span class="lang">
 (C)</span><div class="descr">
-Warn on uses of the <code>vfork</code> function.</div></div></td>
+Warn on uses of the <code>vfork</code> function.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   vfork(); // warn
 }
 </pre></div></div></td></tr>
 
 </tbody></table>
 
 <!-- =========================== unix =========================== -->
 <h3 id="unix_checkers">Unix Checkers</h3>
 <table class="checkers">
 <colgroup><col class="namedescr"><col class="example"></colgroup>
 <thead><tr><td>Name, Description</td><td>Example</td></tr></thead>
 
 <tbody>
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="unix.API"><div class="namedescr expandable"><span class="name">
 unix.API</span><span class="lang">
 (C)</span><div class="descr">
 Check calls to various UNIX/POSIX functions:<div class=functions>
 open<br>
 pthread_once<br>
 calloc<br>
 malloc<br>
 realloc<br>
-alloca<br>
+alloca<br></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 // Currently the check is performed for apple targets only.
 void test(const char *path) {
   int fd = open(path, O_CREAT);
     // warn: call to 'open' requires a third argument when the
     // 'O_CREAT' flag is set
 }

 </pre></div>
 <div class="example"><pre>
 void test() {
   void *p = valloc(0); // warn: allocation size of 0 bytes
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="unix.Malloc"><div class="namedescr expandable"><span class="name">
 unix.Malloc</span><span class="lang">
 (C)</span><div class="descr">
 Check for memory leaks, double free, and use-after-free and offset problems
-involving <code>malloc</code>.</div></div></td>
+involving <code>malloc</code>.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   int *p = malloc(1);
   free(p);
   free(p); // warn: attempt to free released memory
 }
 </pre></div>

 void test() {
   int *p = malloc(sizeof(char));
   p = p - 1;
   free(p); // warn: argument to free() is offset by -4 bytes
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="unix.MallocSizeof"><div class="namedescr expandable"><span class="name">
 unix.MallocSizeof</span><span class="lang">
 (C)</span><div class="descr">
 Check for dubious <code>malloc</code>, <code>calloc</code> or
-<code>realloc</code> arguments involving <code>sizeof</code>.</div></div></td>
+<code>realloc</code> arguments involving <code>sizeof</code>.</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   long *p = malloc(sizeof(short));
     // warn: result is converted to 'long *', which is
     // incompatible with operand type 'short'
   free(p);
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="unix.MismatchedDeallocator"><div class="namedescr expandable"><span class="name">
 unix.MismatchedDeallocator</span><span class="lang">
 (C, C++, ObjC)</span><div class="descr">
 Check for mismatched deallocators (e.g. passing a pointer allocating
-with <code>new</code> to <code>free()</code>).</div></div></td>
+with <code>new</code> to <code>free()</code>).</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 // C, C++
 void test() {
   int *p = (int *)malloc(sizeof(int));
   delete p; // warn
 }
 </pre></div>
void test(NSUInteger dataLength) {
   NSData *d = [NSData dataWithBytesNoCopy:p
                length:sizeof(int) freeWhenDone:1];
     // warn +dataWithBytesNoCopy:length:freeWhenDone: cannot take
     // ownership of memory allocated by 'new'
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="unix.Vfork"><div class="namedescr expandable"><span class="name">
 unix.Vfork</span><span class="lang">
 (C)</span><div class="descr">
-Check for proper usage of vfork</div></div></td>
+Check for proper usage of vfork</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 int test(int x) {
   pid_t pid = vfork(); // warn
   if (pid != 0)
     return 0;
 
   switch (x) {
default:
     return 0; // warn: return is prohibited
   }
 
   while(1);
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="unix.cstring.BadSizeArg"><div class="namedescr expandable"><span class="name">
 unix.cstring.BadSizeArg</span><span class="lang">
 (C)</span><div class="descr">
 Check the size argument passed to <code>strncat</code> for common erroneous
 patterns. Use <code>-Wno-strncat-size</code> compiler option to mute other
 <code>strncat</code>-related compiler warnings.
-</div></div></td>
+</div></div></a></td>
 <td><div class="exampleContainer expandable">
 <div class="example"><pre>
 void test() {
   char dest[3];
   strncat(dest, "***", sizeof(dest));
     // warn: potential buffer overflow
 }
 </pre></div></div></td></tr>
 
 
-<tr><td><div class="namedescr expandable"><span class="name">
+<tr><td><a id="unix.cstring.NullArg"><div class="namedescr expandable"><span class="name">
 unix.cstring.NullArg</span><span class="lang">
 (C)</span><div class="descr">
 Check for null pointers being passed as arguments to C string functions:<div class=functions>
 strlen<br>
 strnlen<br>
 strcpy<br>
 strncpy<br>
 strcat<br>
 strncat<br>
 strcmp<br>
 strncmp<br>
 strcasecmp<br>
-strncasecmp</div></div></div></td>
+strncasecmp</div></div></div></a></td>
 <td><div class="example"><pre>
 int test() {
   return strlen(0); // warn
 }
 </pre></div></td></tr>
 
 </tbody></table>
 
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 </div> <!-- content -->
 </body>
 </html>