[analyzer] Use the MacroExpansionContext for macro expansions in plists

[steakhal]

Summary

Removes the obsolete ad-hoc macro expansions during bugreport constructions.
It will skip the macro expansion if the expansion happened in an imported TU.

Also removes the expected plist file, while expanding matching context for
the tests.
Adds a previously crashing plist-macros-with-expansion.c testfile.
Temporarily marks plist-macros-with-expansion-ctu.c to XFAIL.

[martong]

clang/test/Analysis/Inputs/expected-plists/plist-macros-with-expansion.cpp.plist

0

I wonder how much added value do we have with these huge and clumsy plist files... We already have the concise unittests, which are quite self explanatory. I'd just simply delete these plist files.

[martong]

clang/test/Analysis/Inputs/expected-plists/plist-macros-with-expansion.cpp.plist

0

Perhaps in the test cpp file we should just execute a FileCheck for the expansions. We are totally not interested to check the whole contents of the plist, we are interested only to see if there were expansions.

[xazax.hun]

Yay! Deleting code is always nice.

clang/test/Analysis/Inputs/expected-plists/plist-macros-with-expansion.cpp.plist

0

We do need some plist tests to ensure that the correct plist format is emitted. How much of those do we need might be up for debate.

[steakhal]

Internally we analyzed 16 projects with this patch-stack. No reports were changed!
Now we don't crash on macro expansions in our test set, yey.

I've checked a few expansions and seemed to be readable enough.

clang/test/Analysis/Inputs/expected-plists/plist-macros-with-expansion.cpp.plist

0

It's certainly a pain to keep all the locations in sync with the code.

[steakhal]

clang/lib/StaticAnalyzer/Core/PlistDiagnostics.cpp

828–836

I don't like that I will ruin the CTU expansions - even temporarily.
I will probably commit this patch together with the 4th one, where I will use the same macro expansion mechanism for CTU too.
So these two patches are for 'logical' separation.

[NoQ]

clang/lib/StaticAnalyzer/Core/PlistDiagnostics.cpp

20–21

Will these two includes be ultimately removed? Like, even in the CTU case?

clang/test/Analysis/Inputs/expected-plists/plist-macros-with-expansion.cpp.plist

0

I'm absolutely in favor of not testing the entire plist files whenever possible. Just keep some minimal context available so that to not accidentally match the wrong test. Yes we obviously need some tests for the entire plist files but we already have a lot of that.

[steakhal]

clang/lib/StaticAnalyzer/Core/PlistDiagnostics.cpp

20–21

I think PlistDiagnostics can depend on CTU.
ASTUnit is a different thing though. I think I just accidentally left that include.

I will remove the #include "clang/Frontend/ASTUnit.h" line.

---

What do you mean by the 'CTU case'?

clang/test/Analysis/Inputs/expected-plists/plist-macros-with-expansion.cpp.plist

0

Ok, I will remove these files.

[NoQ]

clang/lib/StaticAnalyzer/Core/PlistDiagnostics.cpp

20–21

I think PlistDiagnostics can depend on CTU.

So, like, my problem is that i want to move all PathDiagnosticConsumers (with implementations) into libAnalysis so that other tools could use it but libAnalysis can't link-time-depend on libCrossTU because that'd be a circular dependency. Basically libAnalysis is a tiny library that contains analyses whereas libCrossTU is a high-level library that manages entire clang invocations. Unless we rethink our library hierarchies entirely, i believe we're stuck with this constraint.

Removing the dependency on libFrontend is insufficient because libCrossTU depends on libFrontend anyway.

If you make MacroExpansionContext abstract and put the concrete implementation in libCrossTU, thus replacing my (currently reverted) attempt in D92432 to break the dependency, that'd fix the problem entirely. Otherwise i'll probably wait for your work to land and do this myself anyway.

What do you mean by the 'CTU case'?

Nothing really (: It was an attempt to emotionally highlight the importance of not having a link-time dependency on libCrossTU even while handling the CTU execution path, according to whatever definition of that you were alluding to in the review summary.

[steakhal]

Updates:

• Rebase stack.
• Add FileCheck context for plist-macros-with-expansion.cpp.
• Remove the Inputs/expected-plists/plist-macros-with-expansion.cpp.plist file.
• Create an extra test file, testing C related stuff, such as Implicit function declaration in plist-macros-with-expansion.c.
• Return None for CTU macro expansions instead of an arbitrary string.

[steakhal]

Updates:

• Rebased.

---

Unfortunately, I could not come up with a proper CTU implementation.
It seems that when we load the AST/dump, no preprocessor events are replayed.
Without those events, my PPCallbacks implementation and tokenwatcher would not record anything, drawing macro expansion useless for CTU.

How should I continue to get this working with CTU?
@xazax.hun @martong @balazske
Previously we had some sort of macro expansions (and crashes), after these patches we would not anymore :(

clang/lib/StaticAnalyzer/Core/PlistDiagnostics.cpp

20–21

After you land D92432, these two includes could be substituted by clang/Analysis/CrossTUAnalysisHelper.h.

[xazax.hun]

In D93224#2493434, @steakhal wrote:

How should I continue to get this working with CTU?

We have two CTU modes. One loading the dump and the other loading from AST source file. I assume that you refer to the former? Could you validate that this solution works for the latter?
If we cannot make CTU fully functional, is it possible to at least make it work for the current TU (as opposed to functions inlined from another TU)?

While it would be great to have a fully working solution, not having macro expansions in a single relatively narrow scenario might worth the trade-off to get rid of the related bugs and throw out a half-baked reimplementation of the preprocessor.

If we really want to make it work for the CTU mode with dumps, we could dump the macro expansions to a separate file together with the AST and read it back for the error reporting.

[steakhal]

In D93224#2493515, @xazax.hun wrote:

In D93224#2493434, @steakhal wrote:

How should I continue to get this working with CTU?

We have two CTU modes. One loading the dump and the other loading from AST source file. I assume that you refer to the former?

Yes, I was referring to that.

Could you validate that this solution works for the latter?

Sure, I suspect that will have the required PP events since the Preprocessor is parsing source code :D
I'm going to check this just to be sure.

If we cannot make CTU fully functional, is it possible to at least make it work for the current TU (as opposed to functions inlined from another TU)?

This element of the patch stack implements exactly that.

While it would be great to have a fully working solution, not having macro expansions in a single relatively narrow scenario might worth the trade-off to get rid of the related bugs and throw out a half-baked reimplementation of the preprocessor.

Even in the CTU case, the main TU is still parsed via the main Preprocessor - hence we will track the macro expansions accordingly.
I would definitely favor this 'option' instead of dropping this patch stack.
I mean, it really fixes a bunch of crashes and expands macros much more accurately especially for the corner-cases.

If we really want to make it work for the CTU mode with dumps, we could dump the macro expansions to a separate file together with the AST and read it back for the error reporting.

If we chose this path, the local getExpandedMacro function needs to be simplified. That would help Artem's dependency issue.

[steakhal]

In D93224#2493710, @steakhal wrote:

In D93224#2493515, @xazax.hun wrote:

Could you validate that this solution works for the latter [ctu-on-demand]?

Sure, I suspect that will have the required PP events since the Preprocessor is parsing source code :D
I'm going to check this just to be sure.

On-demand parsing does indeed populate the required PP events.
The 4-th element of this patch stack will aim to implement macro expansions for that scenario.

In D93224#2493515, @xazax.hun wrote:

If we really want to make it work for the CTU mode with dumps, we could dump the macro expansions to a separate file together with the AST and read it back for the error reporting.

I don't know. Theoretically yes, but I'm not sure how much of a breaking change would it be.
Do we really promise ABI compatibility for AST dumps? If we support it to some extent, then we would have a problem - which would mean that we can not target clang-12 anymore with this patch stack.

[xazax.hun]

In D93224#2495404, @steakhal wrote:

Do we really promise ABI compatibility for AST dumps? If we support it to some extent, then we would have a problem - which would mean that we can not target clang-12 anymore with this patch stack.

I don't think so. As far as I remember we only support consuming AST dumps that were generated with the same version of the compiler. When a compiler is upgraded the user is expected to regenerate all the dumps.

[steakhal]

It seems quite a challenge to hook the Preprocessor for all possible configurations for every CompilerInvocation.
The underlying machinery is somewhat complex and spaghetti to me.

Here is what I suggest:
For now, this expansion is better than the previous was. Macro expansions will work for the main TU even in any CTU configuration. For the imported TUs, it will just not expand any macros.
This is a regression in some way, but we should live with that until we implement it completely.
I think the users would prefer a non-crashing partial implementation to a crashing one.

If you think it's an appropriate, I will update the CTU tests to expect no macro expansion in any imported TU.
And also remove the XFAIL.
This way we could still target clang-12.

Do you think it's acceptable?
@xazax.hun @NoQ

[xazax.hun]

In D93224#2497632, @steakhal wrote:

Do you think it's acceptable?
@xazax.hun @NoQ

It is fine by me. I believe, currently is Ericsson the biggest contributor and user of the CTU functionality. So in case they are onboard with your plans, that should be OK.

[martong]

In D93224#2497632, @steakhal wrote:

It seems quite a challenge to hook the Preprocessor for all possible configurations for every CompilerInvocation.
The underlying machinery is somewhat complex and spaghetti to me.

Here is what I suggest:
For now, this expansion is better than the previous was. Macro expansions will work for the main TU even in any CTU configuration. For the imported TUs, it will just not expand any macros.
This is a regression in some way, but we should live with that until we implement it completely.
I think the users would prefer a non-crashing partial implementation to a crashing one.

If you think it's an appropriate, I will update the CTU tests to expect no macro expansion in any imported TU.
And also remove the XFAIL.
This way we could still target clang-12.

Do you think it's acceptable?
@xazax.hun @NoQ

Sounds good to me!

[Szelethus]

Happy to see this mess go. It was obvious even after the first few hurdles that it wouldn't work out in the long term.

edit: I have no immediate comments regarding CTU.

clang/test/Analysis/plist-macros-with-expansion.cpp

137

Nice.

[steakhal]

Yey, thanks @Szelethus.

clang/lib/StaticAnalyzer/Core/PlistDiagnostics.cpp

 
 #include "clang/Analysis/IssueHash.h"
 #include "clang/Analysis/MacroExpansionContext.h"
 #include "clang/Analysis/PathDiagnostic.h"
 #include "clang/Basic/FileManager.h"
 #include "clang/Basic/PlistSupport.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Basic/Version.h"
 #include "clang/CrossTU/CrossTranslationUnit.h"
 #include "clang/Frontend/ASTUnit.h"
 #include "clang/Lex/Preprocessor.h"
 #include "clang/Lex/TokenConcatenation.h"
 #include "clang/Rewrite/Core/HTMLRewrite.h"
 #include "clang/StaticAnalyzer/Core/PathDiagnosticConsumers.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Support/Casting.h"
void ReportNote(raw_ostream &o, const PathDiagnosticNotePiece& P,
                   unsigned indent);
 
   void ReportPopUp(raw_ostream &o, const PathDiagnosticPopUpPiece &P,
                    unsigned indent);
 };
 
 } // end of anonymous namespace
 
-namespace {
-
-struct ExpansionInfo {
-  std::string MacroName;
-  std::string Expansion;
-  ExpansionInfo(std::string N, std::string E)
-    : MacroName(std::move(N)), Expansion(std::move(E)) {}
-};
-
-} // end of anonymous namespace
-
 /// Print coverage information to output stream {@code o}.
 /// May modify the used list of files {@code Fids} by inserting new ones.
 static void printCoverage(const PathDiagnostic *D,
                           unsigned InputIndentLevel,
                           SmallVectorImpl<FileID> &Fids,
                           FIDMap &FM,
                           llvm::raw_fd_ostream &o);
 
-static ExpansionInfo
-getExpandedMacro(SourceLocation MacroLoc, const Preprocessor &PP,
-                 const cross_tu::CrossTranslationUnitContext &CTU);
+static Optional<StringRef> getExpandedMacro(
+    SourceLocation MacroLoc, const cross_tu::CrossTranslationUnitContext &CTU,
+    const MacroExpansionContext &MacroExpansions, const SourceManager &SM);
 
 //===----------------------------------------------------------------------===//
 // Methods of PlistPrinter.
 //===----------------------------------------------------------------------===//
 
 void PlistPrinter::EmitRanges(raw_ostream &o,
                               const ArrayRef<SourceRange> Ranges,
                               unsigned indent) {
void PlistPrinter::ReportMacroSubPieces(raw_ostream &o,
   assert(P.getFixits().size() == 0 &&
          "Fixits on constrol flow pieces are not implemented yet!");
 }
 
 void PlistPrinter::ReportMacroExpansions(raw_ostream &o, unsigned indent) {
 
   for (const PathDiagnosticMacroPiece *P : MacroPieces) {
     const SourceManager &SM = PP.getSourceManager();
-    ExpansionInfo EI = getExpandedMacro(P->getLocation().asLocation(), PP, CTU);
+
+    SourceLocation MacroExpansionLoc =
+        P->getLocation().asLocation().getExpansionLoc();
+
+    const Optional<StringRef> MacroName =
+        MacroExpansions.getOriginalText(MacroExpansionLoc);
+    const Optional<StringRef> ExpansionText =
+        getExpandedMacro(MacroExpansionLoc, CTU, MacroExpansions, SM);
+
+    if (!MacroName.hasValue() || !ExpansionText.hasValue())
+      continue;
 
     Indent(o, indent) << "<dict>\n";
     ++indent;
 
     // Output the location.
     FullSourceLoc L = P->getLocation().asLocation();
 
     Indent(o, indent) << "<key>location</key>\n";
     EmitLocation(o, SM, L, FM, indent);
 
     // Output the ranges (if any).
     ArrayRef<SourceRange> Ranges = P->getRanges();
     EmitRanges(o, Ranges, indent);
 
     // Output the macro name.
     Indent(o, indent) << "<key>name</key>";
-    EmitString(o, EI.MacroName) << '\n';
+    EmitString(o, MacroName.getValue()) << '\n';
 
     // Output what it expands into.
     Indent(o, indent) << "<key>expansion</key>";
-    EmitString(o, EI.Expansion) << '\n';
+    EmitString(o, ExpansionText.getValue()) << '\n';
 
     // Finish up.
     --indent;
     Indent(o, indent);
     o << "</dict>\n";
   }
 }
 
if (llvm::AreStatisticsEnabled() && DiagOpts.ShouldSerializeStats) {
     EmitString(o, html::EscapeText(stats)) << '\n';
   }
 
   // Finish.
   o << "</dict>\n</plist>\n";
 }
 
 //===----------------------------------------------------------------------===//
-// Declarations of helper functions and data structures for expanding macros.
-//===----------------------------------------------------------------------===//
-
-namespace {
-
-using ArgTokensTy = llvm::SmallVector<Token, 2>;
-
-} // end of anonymous namespace
-
-LLVM_DUMP_METHOD static void dumpArgTokensToStream(llvm::raw_ostream &Out,
-                                                   const Preprocessor &PP,
-                                                   const ArgTokensTy &Toks);
-
-namespace {
-/// Maps unexpanded macro parameters to expanded arguments. A macro argument may
-/// need to expanded further when it is nested inside another macro.
-class MacroParamMap : public std::map<const IdentifierInfo *, ArgTokensTy> {
-public:
-  void expandFromPrevMacro(const MacroParamMap &Super);
-
-  LLVM_DUMP_METHOD void dump(const Preprocessor &PP) const {
-    dumpToStream(llvm::errs(), PP);
-  }
-
-  LLVM_DUMP_METHOD void dumpToStream(llvm::raw_ostream &Out,
-                                     const Preprocessor &PP) const;
-};
-
-struct MacroExpansionInfo {
-  std::string Name;
-  const MacroInfo *MI = nullptr;
-  MacroParamMap ParamMap;
-
-  MacroExpansionInfo(std::string N, const MacroInfo *MI, MacroParamMap M)
-      : Name(std::move(N)), MI(MI), ParamMap(std::move(M)) {}
-};
-
-class TokenPrinter {
-  llvm::raw_ostream &OS;
-  const Preprocessor &PP;
-
-  Token PrevTok, PrevPrevTok;
-  TokenConcatenation ConcatInfo;
-
-public:
-  TokenPrinter(llvm::raw_ostream &OS, const Preprocessor &PP)
-    : OS(OS), PP(PP), ConcatInfo(PP) {
-    PrevTok.setKind(tok::unknown);
-    PrevPrevTok.setKind(tok::unknown);
-  }
-
-  void printToken(const Token &Tok);
-};
-
-/// Wrapper around a Lexer object that can lex tokens one-by-one. Its possible
-/// to "inject" a range of tokens into the stream, in which case the next token
-/// is retrieved from the next element of the range, until the end of the range
-/// is reached.
-class TokenStream {
-public:
-  TokenStream(SourceLocation ExpanLoc, const SourceManager &SM,
-              const LangOptions &LangOpts)
-      : ExpanLoc(ExpanLoc) {
-    FileID File;
-    unsigned Offset;
-    std::tie(File, Offset) = SM.getDecomposedLoc(ExpanLoc);
-    llvm::MemoryBufferRef MB = SM.getBufferOrFake(File);
-    const char *MacroNameTokenPos = MB.getBufferStart() + Offset;
-
-    RawLexer = std::make_unique<Lexer>(SM.getLocForStartOfFile(File), LangOpts,
-                                       MB.getBufferStart(), MacroNameTokenPos,
-                                       MB.getBufferEnd());
-  }
-
-  void next(Token &Result) {
-    if (CurrTokenIt == TokenRange.end()) {
-      RawLexer->LexFromRawLexer(Result);
-      return;
-    }
-    Result = *CurrTokenIt;
-    CurrTokenIt++;
-  }
-
-  void injectRange(const ArgTokensTy &Range) {
-    TokenRange = Range;
-    CurrTokenIt = TokenRange.begin();
-  }
-
-  std::unique_ptr<Lexer> RawLexer;
-  ArgTokensTy TokenRange;
-  ArgTokensTy::iterator CurrTokenIt = TokenRange.begin();
-  SourceLocation ExpanLoc;
-};
-
-} // end of anonymous namespace
-
-/// The implementation method of getMacroExpansion: It prints the expansion of
-/// a macro to \p Printer, and returns with the name of the macro.
-///
-/// Since macros can be nested in one another, this function may call itself
-/// recursively.
-///
-/// Unfortunately, macro arguments have to expanded manually. To understand why,
-/// observe the following example:
-///
-///   #define PRINT(x) print(x)
-///   #define DO_SOMETHING(str) PRINT(str)
-///
-///   DO_SOMETHING("Cute panda cubs.");
-///
-/// As we expand the last line, we'll immediately replace PRINT(str) with
-/// print(x). The information that both 'str' and 'x' refers to the same string
-/// is an information we have to forward, hence the argument \p PrevParamMap.
-///
-/// To avoid infinite recursion we maintain the already processed tokens in
-/// a set. This is carried as a parameter through the recursive calls. The set
-/// is extended with the currently processed token and after processing it, the
-/// token is removed. If the token is already in the set, then recursion stops:
-///
-/// #define f(y) x
-/// #define x f(x)
-static std::string getMacroNameAndPrintExpansion(
-    TokenPrinter &Printer, SourceLocation MacroLoc, const Preprocessor &PP,
-    const MacroParamMap &PrevParamMap,
-    llvm::SmallPtrSet<IdentifierInfo *, 8> &AlreadyProcessedTokens);
-
-/// Retrieves the name of the macro and what it's parameters expand into
-/// at \p ExpanLoc.
-///
-/// For example, for the following macro expansion:
-///
-///   #define SET_TO_NULL(x) x = 0
-///   #define NOT_SUSPICIOUS(a) \
-///     {                       \
-///       int b = 0;            \
-///     }                       \
-///     SET_TO_NULL(a)
-///
-///   int *ptr = new int(4);
-///   NOT_SUSPICIOUS(&ptr);
-///   *ptr = 5;
-///
-/// When \p ExpanLoc references the last line, the macro name "NOT_SUSPICIOUS"
-/// and the MacroArgMap map { (a, &ptr) } will be returned.
-///
-/// When \p ExpanLoc references "SET_TO_NULL(a)" within the definition of
-/// "NOT_SUSPICOUS", the macro name "SET_TO_NULL" and the MacroArgMap map
-/// { (x, a) } will be returned.
-static MacroExpansionInfo
-getMacroExpansionInfo(const MacroParamMap &PrevParamMap,
-                      SourceLocation ExpanLoc, const Preprocessor &PP);
-
-/// Retrieves the ')' token that matches '(' \p It points to.
-static MacroInfo::tokens_iterator getMatchingRParen(
-    MacroInfo::tokens_iterator It,
-    MacroInfo::tokens_iterator End);
-
-/// Retrieves the macro info for \p II refers to at \p Loc. This is important
-/// because macros can be redefined or undefined.
-static const MacroInfo *getMacroInfoForLocation(const Preprocessor &PP,
-                                                const SourceManager &SM,
-                                                const IdentifierInfo *II,
-                                                SourceLocation Loc);
-
-//===----------------------------------------------------------------------===//
 // Definitions of helper functions and methods for expanding macros.
 //===----------------------------------------------------------------------===//
 
-static ExpansionInfo
-getExpandedMacro(SourceLocation MacroLoc, const Preprocessor &PP,
-                 const cross_tu::CrossTranslationUnitContext &CTU) {
-
-  const Preprocessor *PPToUse = &PP;
-  if (auto LocAndUnit = CTU.getImportedFromSourceLocation(MacroLoc)) {
-    MacroLoc = LocAndUnit->first;
-    PPToUse = &LocAndUnit->second->getPreprocessor();
-  }
-
-  llvm::SmallString<200> ExpansionBuf;
-  llvm::raw_svector_ostream OS(ExpansionBuf);
-  TokenPrinter Printer(OS, *PPToUse);
-  llvm::SmallPtrSet<IdentifierInfo*, 8> AlreadyProcessedTokens;
-
-  std::string MacroName = getMacroNameAndPrintExpansion(
-      Printer, MacroLoc, *PPToUse, MacroParamMap{}, AlreadyProcessedTokens);
-  return {MacroName, std::string(OS.str())};
-}
-
-static std::string getMacroNameAndPrintExpansion(
-    TokenPrinter &Printer, SourceLocation MacroLoc, const Preprocessor &PP,
-    const MacroParamMap &PrevParamMap,
-    llvm::SmallPtrSet<IdentifierInfo *, 8> &AlreadyProcessedTokens) {
-
-  const SourceManager &SM = PP.getSourceManager();
-
-  MacroExpansionInfo MExpInfo =
-      getMacroExpansionInfo(PrevParamMap, SM.getExpansionLoc(MacroLoc), PP);
-  IdentifierInfo *MacroNameII = PP.getIdentifierInfo(MExpInfo.Name);
-
-  // TODO: If the macro definition contains another symbol then this function is
-  // called recursively. In case this symbol is the one being defined, it will
-  // be an infinite recursion which is stopped by this "if" statement. However,
-  // in this case we don't get the full expansion text in the Plist file. See
-  // the test file where "value" is expanded to "garbage_" instead of
-  // "garbage_value".
-  if (!AlreadyProcessedTokens.insert(MacroNameII).second)
-    return MExpInfo.Name;
-
-  if (!MExpInfo.MI)
-    return MExpInfo.Name;
-
-  // Manually expand its arguments from the previous macro.
-  MExpInfo.ParamMap.expandFromPrevMacro(PrevParamMap);
-
-  // Iterate over the macro's tokens and stringify them.
-  for (auto It = MExpInfo.MI->tokens_begin(), E = MExpInfo.MI->tokens_end();
-       It != E; ++It) {
-    Token T = *It;
-
-    // If this token is not an identifier, we only need to print it.
-    if (T.isNot(tok::identifier)) {
-      Printer.printToken(T);
-      continue;
-    }
-
-    const auto *II = T.getIdentifierInfo();
-    assert(II &&
-          "This token is an identifier but has no IdentifierInfo!");
-
-    // If this token is a macro that should be expanded inside the current
-    // macro.
-    if (getMacroInfoForLocation(PP, SM, II, T.getLocation())) {
-      getMacroNameAndPrintExpansion(Printer, T.getLocation(), PP,
-                                    MExpInfo.ParamMap, AlreadyProcessedTokens);
-
-      // If this is a function-like macro, skip its arguments, as
-      // getExpandedMacro() already printed them. If this is the case, let's
-      // first jump to the '(' token.
-      auto N = std::next(It);
-      if (N != E && N->is(tok::l_paren))
-        It = getMatchingRParen(++It, E);
-      continue;
-    }
-
-    // If this token is the current macro's argument, we should expand it.
-    auto ParamToArgIt = MExpInfo.ParamMap.find(II);
-    if (ParamToArgIt != MExpInfo.ParamMap.end()) {
-      for (MacroInfo::tokens_iterator ArgIt = ParamToArgIt->second.begin(),
-                                      ArgEnd = ParamToArgIt->second.end();
-           ArgIt != ArgEnd; ++ArgIt) {
-
-        // These tokens may still be macros, if that is the case, handle it the
-        // same way we did above.
-        const auto *ArgII = ArgIt->getIdentifierInfo();
-        if (!ArgII) {
-          Printer.printToken(*ArgIt);
-          continue;
-        }
-
-        const auto *MI = PP.getMacroInfo(ArgII);
-        if (!MI) {
-          Printer.printToken(*ArgIt);
-          continue;
-        }
-
-        getMacroNameAndPrintExpansion(Printer, ArgIt->getLocation(), PP,
-                                      MExpInfo.ParamMap,
-                                      AlreadyProcessedTokens);
-        // Peek the next token if it is a tok::l_paren. This way we can decide
-        // if this is the application or just a reference to a function maxro
-        // symbol:
-        //
-        // #define apply(f) ...
-        // #define func(x) ...
-        // apply(func)
-        // apply(func(42))
-        auto N = std::next(ArgIt);
-        if (N != ArgEnd && N->is(tok::l_paren))
-          ArgIt = getMatchingRParen(++ArgIt, ArgEnd);
-      }
-      continue;
-    }
-
-    // If control reached here, then this token isn't a macro identifier, nor an
-    // unexpanded macro argument that we need to handle, print it.
-    Printer.printToken(T);
-  }
-
-  AlreadyProcessedTokens.erase(MacroNameII);
-
-  return MExpInfo.Name;
-}
-
-static MacroExpansionInfo
-getMacroExpansionInfo(const MacroParamMap &PrevParamMap,
-                      SourceLocation ExpanLoc, const Preprocessor &PP) {
-
-  const SourceManager &SM = PP.getSourceManager();
-  const LangOptions &LangOpts = PP.getLangOpts();
-
-  // First, we create a Lexer to lex *at the expansion location* the tokens
-  // referring to the macro's name and its arguments.
-  TokenStream TStream(ExpanLoc, SM, LangOpts);
-
-  // Acquire the macro's name.
-  Token TheTok;
-  TStream.next(TheTok);
-
-  std::string MacroName = PP.getSpelling(TheTok);
-
-  const auto *II = PP.getIdentifierInfo(MacroName);
-  assert(II && "Failed to acquire the IdentifierInfo for the macro!");
-
-  const MacroInfo *MI = getMacroInfoForLocation(PP, SM, II, ExpanLoc);
-  // assert(MI && "The macro must've been defined at it's expansion location!");
-  //
-  // We should always be able to obtain the MacroInfo in a given TU, but if
-  // we're running the analyzer with CTU, the Preprocessor won't contain the
-  // directive history (or anything for that matter) from another TU.
-  // TODO: assert when we're not running with CTU.
-  if (!MI)
-    return { MacroName, MI, {} };
-
-  // Acquire the macro's arguments at the expansion point.
-  //
-  // The rough idea here is to lex from the first left parentheses to the last
-  // right parentheses, and map the macro's parameter to what they will be
-  // expanded to. A macro argument may contain several token (like '3 + 4'), so
-  // we'll lex until we find a tok::comma or tok::r_paren, at which point we
-  // start lexing the next argument or finish.
-  ArrayRef<const IdentifierInfo *> MacroParams = MI->params();
-  if (MacroParams.empty())
-    return { MacroName, MI, {} };
-
-  TStream.next(TheTok);
-  // When this is a token which expands to another macro function then its
-  // parentheses are not at its expansion locaiton. For example:
-  //
-  // #define foo(x) int bar() { return x; }
-  // #define apply_zero(f) f(0)
-  // apply_zero(foo)
-  //               ^
-  //               This is not a tok::l_paren, but foo is a function.
-  if (TheTok.isNot(tok::l_paren))
-    return { MacroName, MI, {} };
-
-  MacroParamMap ParamMap;
-
-  // When the argument is a function call, like
-  //   CALL_FN(someFunctionName(param1, param2))
-  // we will find tok::l_paren, tok::r_paren, and tok::comma that do not divide
-  // actual macro arguments, or do not represent the macro argument's closing
-  // parentheses, so we'll count how many parentheses aren't closed yet.
-  // If ParanthesesDepth
-  //   * = 0, then there are no more arguments to lex.
-  //   * = 1, then if we find a tok::comma, we can start lexing the next arg.
-  //   * > 1, then tok::comma is a part of the current arg.
-  int ParenthesesDepth = 1;
-
-  // If we encounter the variadic arg, we will lex until the closing
-  // tok::r_paren, even if we lex a tok::comma and ParanthesesDepth == 1.
-  const IdentifierInfo *VariadicParamII = PP.getIdentifierInfo("__VA_ARGS__");
-  if (MI->isGNUVarargs()) {
-    // If macro uses GNU-style variadic args, the param name is user-supplied,
-    // an not "__VA_ARGS__".  E.g.:
-    //   #define FOO(a, b, myvargs...)
-    // In this case, just use the last parameter:
-    VariadicParamII = *(MacroParams.rbegin());
-  }
-
-  for (const IdentifierInfo *CurrParamII : MacroParams) {
-    MacroParamMap::mapped_type ArgTokens;
-
-    // One could also simply not supply a single argument to __VA_ARGS__ -- this
-    // results in a preprocessor warning, but is not an error:
-    //   #define VARIADIC(ptr, ...) \
-    //     someVariadicTemplateFunction(__VA_ARGS__)
-    //
-    //   int *ptr;
-    //   VARIADIC(ptr); // Note that there are no commas, this isn't just an
-    //                  // empty parameter -- there are no parameters for '...'.
-    // In any other case, ParenthesesDepth mustn't be 0 here.
-    if (ParenthesesDepth != 0) {
-
-      // Lex the first token of the next macro parameter.
-      TStream.next(TheTok);
-
-      while (CurrParamII == VariadicParamII || ParenthesesDepth != 1 ||
-             !TheTok.is(tok::comma)) {
-        assert(TheTok.isNot(tok::eof) &&
-               "EOF encountered while looking for expanded macro args!");
-
-        if (TheTok.is(tok::l_paren))
-          ++ParenthesesDepth;
-
-        if (TheTok.is(tok::r_paren))
-          --ParenthesesDepth;
-
-        if (ParenthesesDepth == 0)
-          break;
-
-        if (TheTok.is(tok::raw_identifier)) {
-          PP.LookUpIdentifierInfo(TheTok);
-          // This token is a variadic parameter:
-          //
-          //   #define PARAMS_RESOLVE_TO_VA_ARGS(i, fmt) foo(i, fmt); \
-          //     i = 0;
-          //   #define DISPATCH(...) \
-          //     PARAMS_RESOLVE_TO_VA_ARGS(__VA_ARGS__);
-          //                            // ^~~~~~~~~~~ Variadic parameter here
-          //
-          //   void multipleParamsResolveToVA_ARGS(void) {
-          //     int x = 1;
-          //     DISPATCH(x, "LF1M healer"); // Multiple arguments are mapped to
-          //                                 // a single __VA_ARGS__ parameter.
-          //     (void)(10 / x);
-          //   }
-          //
-          // We will stumble across this while trying to expand
-          // PARAMS_RESOLVE_TO_VA_ARGS. By this point, we already noted during
-          // the processing of DISPATCH what __VA_ARGS__ maps to, so we'll
-          // retrieve the next series of tokens from that.
-          if (TheTok.getIdentifierInfo() == VariadicParamII) {
-            TStream.injectRange(PrevParamMap.at(VariadicParamII));
-            TStream.next(TheTok);
-            continue;
-          }
-        }
-
-        ArgTokens.push_back(TheTok);
-        TStream.next(TheTok);
-      }
-    } else {
-      assert(CurrParamII == VariadicParamII &&
-             "No more macro arguments are found, but the current parameter "
-             "isn't the variadic arg!");
-    }
-
-    ParamMap.emplace(CurrParamII, std::move(ArgTokens));
-  }
-
-  assert(TheTok.is(tok::r_paren) &&
-         "Expanded macro argument acquisition failed! After the end of the loop"
-         " this token should be ')'!");
-
-  return {MacroName, MI, ParamMap};
-}
-
-static MacroInfo::tokens_iterator getMatchingRParen(
-    MacroInfo::tokens_iterator It,
-    MacroInfo::tokens_iterator End) {
-
-  assert(It->is(tok::l_paren) && "This token should be '('!");
-
-  // Skip until we find the closing ')'.
-  int ParenthesesDepth = 1;
-  while (ParenthesesDepth != 0) {
-    ++It;
-
-    assert(It->isNot(tok::eof) &&
-           "Encountered EOF while attempting to skip macro arguments!");
-    assert(It != End &&
-           "End of the macro definition reached before finding ')'!");
-
-    if (It->is(tok::l_paren))
-      ++ParenthesesDepth;
-
-    if (It->is(tok::r_paren))
-      --ParenthesesDepth;
-  }
-  return It;
-}
-
-static const MacroInfo *getMacroInfoForLocation(const Preprocessor &PP,
-                                                const SourceManager &SM,
-                                                const IdentifierInfo *II,
-                                                SourceLocation Loc) {
-
-  const MacroDirective *MD = PP.getLocalMacroDirectiveHistory(II);
-  if (!MD)
-    return nullptr;
-
-  return MD->findDirectiveAtLoc(Loc, SM).getMacroInfo();
-}
-
-void MacroParamMap::expandFromPrevMacro(const MacroParamMap &Super) {
-
-  for (value_type &Pair : *this) {
-    ArgTokensTy &CurrArgTokens = Pair.second;
-
-    // For each token in the expanded macro argument.
-    auto It = CurrArgTokens.begin();
-    while (It != CurrArgTokens.end()) {
-      if (It->isNot(tok::identifier)) {
-        ++It;
-        continue;
-      }
-
-      const auto *II = It->getIdentifierInfo();
-      assert(II);
-
-      // Is this an argument that "Super" expands further?
-      if (!Super.count(II)) {
-        ++It;
-        continue;
-      }
-
-      const ArgTokensTy &SuperArgTokens = Super.at(II);
-
-      It = CurrArgTokens.insert(It, SuperArgTokens.begin(),
-                                SuperArgTokens.end());
-      std::advance(It, SuperArgTokens.size());
-      It = CurrArgTokens.erase(It);
-    }
-  }
-}
-
-void MacroParamMap::dumpToStream(llvm::raw_ostream &Out,
-                                 const Preprocessor &PP) const {
-  for (const std::pair<const IdentifierInfo *, ArgTokensTy> Pair : *this) {
-    Out << Pair.first->getName() << " -> ";
-    dumpArgTokensToStream(Out, PP, Pair.second);
-    Out << '\n';
-  }
-}
-
-static void dumpArgTokensToStream(llvm::raw_ostream &Out,
-                                  const Preprocessor &PP,
-                                  const ArgTokensTy &Toks) {
-  TokenPrinter Printer(Out, PP);
-  for (Token Tok : Toks)
-    Printer.printToken(Tok);
-}
-
-void TokenPrinter::printToken(const Token &Tok) {
-  // TODO: Handle GNU extensions where hash and hashhash occurs right before
-  // __VA_ARGS__.
-  // cppreference.com: "some compilers offer an extension that allows ## to
-  // appear after a comma and before __VA_ARGS__, in which case the ## does
-  // nothing when the variable arguments are present, but removes the comma when
-  // the variable arguments are not present: this makes it possible to define
-  // macros such as fprintf (stderr, format, ##__VA_ARGS__)"
-  // FIXME: Handle named variadic macro parameters (also a GNU extension).
-
-  // If this is the first token to be printed, don't print space.
-  if (PrevTok.isNot(tok::unknown)) {
-    // If the tokens were already space separated, or if they must be to avoid
-    // them being implicitly pasted, add a space between them.
-    if(Tok.hasLeadingSpace() || ConcatInfo.AvoidConcat(PrevPrevTok, PrevTok,
-                                                       Tok)) {
-      // AvoidConcat doesn't check for ##, don't print a space around it.
-      if (PrevTok.isNot(tok::hashhash) && Tok.isNot(tok::hashhash)) {
-        OS << ' ';
-      }
-    }
-  }
-
-  if (!Tok.isOneOf(tok::hash, tok::hashhash)) {
-    if (PrevTok.is(tok::hash))
-      OS << '\"' << PP.getSpelling(Tok) << '\"';
-    else
-      OS << PP.getSpelling(Tok);
+static Optional<StringRef>
+getExpandedMacro(SourceLocation MacroExpansionLoc,
+                 const cross_tu::CrossTranslationUnitContext &CTU,
+                 const MacroExpansionContext &MacroExpansions,
+                 const SourceManager &SM) {
+  if (auto LocAndUnit = CTU.getImportedFromSourceLocation(MacroExpansionLoc)) {
+    // TODO: Implement macro expansions for CTU.
+    return llvm::None;
   }
-
-  PrevPrevTok = PrevTok;
-  PrevTok = Tok;
+  return MacroExpansions.getExpandedText(MacroExpansionLoc);
 }

clang/test/Analysis/Inputs/expected-plists/plist-macros-with-expansion.cpp.plist

-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
- <key>clang_version</key>
- <key>diagnostics</key>
- <array>
-  <dict>
-   <key>path</key>
-   <array>
-    <dict>
-     <key>kind</key><string>control</string>
-     <key>edges</key>
-      <array>
-       <dict>
-        <key>start</key>
-         <array>
-          <dict>
-           <key>line</key><integer>23</integer>
-           <key>col</key><integer>3</integer>
-           <key>file</key><integer>0</integer>
-          </dict>
-          <dict>
-           <key>line</key><integer>23</integer>
-           <key>col</key><integer>5</integer>
-           <key>file</key><integer>0</integer>
-          </dict>
-         </array>
-        <key>end</key>
-         <array>
-          <dict>
-           <key>line</key><integer>24</integer>
-           <key>col</key><integer>3</integer>
-           <key>file</key><integer>0</integer>
-          </dict>
-          <dict>
-           <key>line</key><integer>24</integer>
-           <key>col</key><integer>21</integer>
-           <key>file</key><integer>0</integer>
-          </dict>
-         </array>
-       </dict>
-      </array>
-    </dict>
-    <dict>
-     <key>kind</key><string>event</string>
-     <key>location</key>
-     <dict>
-      <key>line</key><integer>24</integer>
-      <key>col</key><integer>3</integer>
-      <key>file</key><integer>0</integer>
-     </dict>
-     <key>ranges</key>
-     <array>
-       <array>
-        <dict>
-         <key>line</key><integer>24</integer>
-         <key>col</key><integer>3</integer>
-         <key>file</key><integer>0</integer>
-        </dict>
-        <dict>
-         <key>line</key><integer>24</integer>
-         <key>col</key><integer>21</integer>
-         <key>file</key><integer>0</integer>
-        </dict>
-       </array>
-     </array>
-     <key>depth</key><integer>0</integer>
-     <key>extended_message</key>
-     <string>Null pointer value stored to &apos;ptr&apos;</string>
-     <key>message</key>
-     <string>Null pointer value stored to &apos;ptr&apos;</string>
-    </dict>
-    <dict>
-     <key>kind</key><string>control</string>
-     <key>edges</key>
-      <array>
-       <dict>
-        <key>start</key>
-         <array>
-          <dict>
-           <key>line</key><integer>25</integer>
-           <key>col</key><integer>3</integer>
-           <key>file</key><integer>0</integer>
-          </dict>
-          <dict>
-           <key>line</key><integer>25</integer>
-           <key>col</key><integer>3</integer>
-           <key>file</key><integer>0</integer>
-          </dict>
-         </array>
-        <key>end</key>
-         <array>
-          <dict>
-           <key>line</key><integer>25</integer>
-           <key>col</key><integer>8</integer>
-           <key>file</key><integer>0</integer>
-          </dict>
-          <dict>
-           <key>line</key><integer>25</integer>
-           <key>col</key><integer>8</integer>
-           <key>file</key><integer>0</integer>
-          </dict>
-         </array>
-       </dict>
-      </array>
-    </dict>
-    <dict>
-     <key>kind</key><string>event</string>
-     <key>location</key>
-     <dict>
-      <key>line</key><integer>25</integer>
-      <key>col</key><integer>8</integer>
-      <key>file</key><integer>0</integer>
-     </dict>
-     <key>ranges</key>
-     <array>
-       <array>
-        <dict>
-         <key>line</key><integer>25</integer>
-         <key>col</key><integer>4</integer>
-         <key>file</key><integer>0</integer>
-        </dict>
-        <dict>
-         <key>line</key><integer>25</integer>
-         <key>col</key><integer>6</integer>
-         <key>file</key><integer>0</integer>
-        </dict>
-       </array>
-     </array>
-     <key>depth</key><integer>0</integer>
-     <key>extended_message</key>
-     <string>Dereference of null pointer (loaded from variable &apos;ptr&apos;)</string>
-     <key>message</key>
-     <string>Dereference of null pointer (loaded from variable &apos;ptr&apos;)</string>
-    </dict>
-   </array>
-   <key>macro_expansions</key>
-   <array>
-    <dict>
-     <key>location</key>
-     <dict>
-      <key>line</key><integer>24</integer>
-      <key>col</key><integer>3</integer>
-      <key>file</key><integer>0</integer>
-     </dict>
-     <key>name</key><string>SET_PTR_VAR_TO_NULL</string>
-     <key>expansion</key><string>ptr = 0</string>
-    </dict>
-   </array>
-   <key>description</key><string>Dereference of null pointer (loaded from variable &apos;ptr&apos;)</string>
-   <key>category</key><string>Logic error</string>
-   <key>type</key><string>Dereference of null pointer</string>
-   <key>check_name</key><string>core.NullDereference</string>
-   <!-- This hash is experimental and going to change! -->
-   <key>issue_hash_content_of_line_in_context</key><string>f8fbc46cc5afbb056d92bd3d3d702781</string>
-  <key>issue_context_kind</key><string>function</string>
-  <key>issue_context</key><string>nonFunctionLikeMacroTest</string>
-  <key>issue_hash_function_offset</key><string>3</string>
-  <key>location</key>
-  <dict>
-   <key>line</key><integer>25</integer>
-   <key>col</key><integer>8</integer>
-   <key>file</key><integer>0</integer>
-  </dict>
-  <key>ExecutedLines</key>
-  <dict>
-   <key>0</key>
-   <array>
-    <integer>22</integer>
-    <integer>23</integer>
-    <integer>24</integer>
-    <integer>25</integer>
-   </array>
-  </dict>
-  </dict>
-  <dict>
-   <key>path</key>
-   <array>
-    <dict>
-     <key>kind</key><string>control</string>
-     <key>edges</key>
-      <array>
-       <dict>
-        <key>start</key>
-         <array>
-          <dict>
-           <key>line</key><integer>36</integer>
-           <key>col</key><integer>3</integer>
-           <key>file</key><integer>0</integer>
-          </dict>
-          <dict>
-           <key>line</key><integer>36</integer>
-           <key>col</key><integer>5</integer>
-           <key>file</key><integer>0</integer>
-          </dict>
-         </array>
-        <key>end</key>
-         <array>
-          <dict>
-           <key>line</key><integer>37</integer>
-           <key>col</key><integer>3</integer>
-           <key>file</key><integer>0</integer>
-          </dict>
-          <dict>
-           <key>line</key><integer>37</integer>
-           <key>col</key><integer>39</integer>
-           <key>file</key><integer>0</integer>
-          </dict>
-         </array>
-       </dict>
-      </array>
-    </dict>
-    <dict>
-     <key>kind</key><string>event</string>
-     <key>location</key>
-     <dict>
-      <key>line</key><integer>37</integer>
-      <key>col</key><integer>3</integer>
-      <key>file</key><integer>0</integer>
-     </dict>
-     <key>ranges</key>
-     <array>
-       <array>
-        <dict>
-         <key>line</key><integer>37</integer>
-         <key>col</key><integer>3</integer>
-         <key>file</key><integer>0</integer>
-        </dict>
-        <dict>
-         <key>line</key><integer>37</integer>
-         <key>col</key><integer>39</integer>
-         <key>file</key><integer>0</integer>
-        </dict>
-       </array>
-     </array>
-     <key>depth</key><integer>0</integer>
-     <key>extended_message</key>
-     <string>Null pointer value stored to &apos;ptr&apos;</string>
-     <key>message</key>
-     <string>Null pointer value stored to &apos;ptr&apos;</string>
-    </dict>
-    <dict>
-     <key>kind</key><string>control</string>
-     <key>edges</key>
-      <array>
-       <dict>
-        <key>start</key>
-         <array>
-          <dict>
-           <key>line</key><integer>38</integer>
-           <key>col</key><integer>3</integer>
-           <key>file</key><integer>0</integer>
-          </dict>
-          <dict>
-           <key>line</key><integer>38</integer>
-           <key>col</key><integer>3</integer>
-           <key>file</key><integer>0</integer>
-          </dict>
-         </array>
-        <key>end</key>
-         <array>
-          <dict>
-           <key>line</key><integer>38</integer>
-           <key>col</key><integer>8</integer>
-           <key>file</key><integer>0</integer>
-          </dict>
-          <dict>
-           <key>line</key><integer>38</integer>
-           <key>col</key><integer>8</integer>
-           <key>file</key><integer>0</integer>
-          </dict>
-         </array>
-       </dict>
-      </array>
-    </dict>
-    <dict>
-     <key>kind</key><string>event</string>
-     <key>location</key>
-     <dict>
-      <key>line</key><integer>38</integer>
-      <key>col</key><integer>8</integer>
-      <key>file</key><integer>0</integer>
-     </dict>
-     <key>ranges</key>
-     <array>
-       <array>
-        <dict>
-         <key>line</key><integer>38</integer>
-         <key>col</key><integer>4</integer>
-         <key>file</key><integer>0</integer>
-        </dict>
-        <dict>
-         <key>line</key><integer>38</integer>
-         <key>col</key><integer>6</integer>
-         <key>file</key><integer>0</integer>
-        </dict>
-       </array>
-     </array>
-     <key>depth</key><integer>0</integer>
-     <key>extended_message</key>
-     <string>Dereference of null pointer (loaded from variable &apos;ptr&apos;)</string>
-     <key>message</key>
-     <string>Dereference of null pointer (loaded from variable &apos;ptr&apos;)</string>
-    </dict>
-   </array>
-   <key>macro_expansions</key>
-   <array>
-    <dict>
-     <key>location</key>
-     <dict>
-      <key>line</key><integer>37</integer>
-      <key>col</key><integer>3</integer>
-      <key>file</key><integer>0</integer>
-     </dict>
-     <key>name</key><string>SET_PTR_VAR_TO_NULL_WITH_NESTED_MACRO</string>
-     <key>expansion</key><string>ptr =0</string>
-    </dict>
-   </array>
-   <key>description</key><string>Dereference of null pointer (loaded from variable &apos;ptr&apos;)</string>
-   <key>category</key><string>Logic error</string>
-   <key>type</key><string>Dereference of null pointer</string>
-   <key>check_name</key><string>core.NullDereference</string>
-   <!-- This hash is experimental and going to change! -->
-   <key>issue_hash_content_of_line_in_context</key><string>d5eba61193b41c27fc7b2705cbd607ba</string>
-  <key>issue_context_kind</key><string>function</string>
-  <key>issue_context</key><string>nonFunctionLikeNestedMacroTest</string>
-  <key>issue_hash_function_offset</key><string>3</string>
-  <key>location</key>
-  <dict>
-   <key>line</key><integer>38</integer>
-   <key>col</key><integer>8</integer>
-   <key>file</key><integer>0</integer>
-  </dict>
-  <key>ExecutedLines</key>
-  <dict>
-   <key>0</key>
-   <array>
-    <integer>35</integer>
-    <integer>36</integer>
-    <integer>37</integer>
-    <integer>38</integer>
-   </array>
-  </dict>
-  </dict>
-  <dict>
-   <key>path</key>
-   <array>
-    <dict>
-     <key>kind</key><string>control</string>
-     <key>edges</key>
-      <array>
-       <dict>
-        <key>start</key>
-         <array>
-          <dict>
-           <key>line</key><integer>56</integer>
-           <key>col</key><integer>3</integer>
-           <key>file</key><integer>0</integer>
-          </dict>
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-    </dict>
-   </array>
-   <key>description</key><string>Division by zero</string>
-   <key>category</key><string>Logic error</string>
-   <key>type</key><string>Division by zero</string>
-   <key>check_name</key><string>core.DivideZero</string>
-   <!-- This hash is experimental and going to change! -->
-   <key>issue_hash_content_of_line_in_context</key><string>21c6d180d8c8c30cf730b7a7136980a9</string>
-  <key>issue_context_kind</key><string>function</string>
-  <key>issue_context</key><string>bz44493</string>
-  <key>issue_hash_function_offset</key><string>4</string>
-  <key>location</key>
-  <dict>
-   <key>line</key><integer>540</integer>
-   <key>col</key><integer>13</integer>
-   <key>file</key><integer>0</integer>
-  </dict>
-  <key>ExecutedLines</key>
-  <dict>
-   <key>0</key>
-   <array>
-    <integer>536</integer>
-    <integer>537</integer>
-    <integer>538</integer>
-    <integer>539</integer>
-    <integer>540</integer>
-   </array>
-  </dict>
-  </dict>
- </array>
- <key>files</key>
- <array>
- </array>
-</dict>
-</plist>

clang/test/Analysis/plist-macros-with-expansion-ctu.c

 // RUN: rm -rf %t && mkdir %t
 // RUN: mkdir -p %t/ctudir
 // RUN: %clang_cc1 -emit-pch -o %t/ctudir/plist-macros-ctu.c.ast %S/Inputs/plist-macros-ctu.c
 // RUN: cp %S/Inputs/plist-macros-with-expansion-ctu.c.externalDefMap.txt %t/ctudir/externalDefMap.txt
 
 // RUN: %clang_analyze_cc1 -analyzer-checker=core \
 // RUN:   -analyzer-config experimental-enable-naive-ctu-analysis=true \
 // RUN:   -analyzer-config ctu-dir=%t/ctudir \
 // RUN:   -analyzer-config expand-macros=true \
 // RUN:   -analyzer-output=plist-multi-file -o %t.plist -verify %s
-
+// XFAIL: *
 // Check the macro expansions from the plist output here, to make the test more
 // understandable.
 //   RUN: FileCheck --input-file=%t.plist %s
 
 extern void F1(int **);
 extern void F2(int **);
 extern void F3(int **);
 extern void F_H(int **);

clang/test/Analysis/plist-macros-with-expansion.c

+// RUN: %clang_analyze_cc1 -analyzer-checker=core %s  \
+// RUN:   -analyzer-output=plist -o %t.plist \
+// RUN:   -analyzer-config expand-macros=true -verify
+//
+// RUN: FileCheck --input-file=%t.plist %s
+
+#define STRANGE_FN(x) STRANGE_FN(x, 0)
+void test_strange_macro_expansion() {
+  char *path;
+  STRANGE_FN(path); // no-crash
+  // expected-warning@-1 {{implicit declaration of function}}
+  // expected-warning@-2 {{1st function call argument is an uninitialized value}}
+}
+
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>10</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>STRANGE_FN(path)</string>
+// CHECK-NEXT:   <key>expansion</key><string>STRANGE_FN (path ,0)</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
+

clang/test/Analysis/plist-macros-with-expansion.cpp

 // RUN: %clang_analyze_cc1 -std=c++14 -analyzer-checker=core %s  \
 // RUN:   -analyzer-output=plist -o %t.plist \
-// RUN:   -analyzer-config expand-macros=true
+// RUN:   -analyzer-config expand-macros=true -verify
 //
-// Check the actual plist output.
-//   RUN: %normalize_plist <%t.plist | diff -ub \
-//   RUN:   %S/Inputs/expected-plists/plist-macros-with-expansion.cpp.plist -
-//
-// Check the macro expansions from the plist output here, to make the test more
-// understandable.
-//   RUN: FileCheck --input-file=%t.plist %s
+// RUN: FileCheck --input-file=%t.plist %s
 
 void print(const void*);
 
 //===----------------------------------------------------------------------===//
 // Tests for non-function-like macro expansions.
 //===----------------------------------------------------------------------===//
 
 #define SET_PTR_VAR_TO_NULL \
   ptr = 0
 
 void nonFunctionLikeMacroTest() {
   int *ptr;
   SET_PTR_VAR_TO_NULL;
   *ptr = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>SET_PTR_VAR_TO_NULL</string>
-// CHECK-NEXT: <key>expansion</key><string>ptr = 0</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>18</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>SET_PTR_VAR_TO_NULL</string>
+// CHECK-NEXT:   <key>expansion</key><string>ptr =0</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 #define NULL 0
 #define SET_PTR_VAR_TO_NULL_WITH_NESTED_MACRO \
   ptr = NULL
 
 void nonFunctionLikeNestedMacroTest() {
   int *ptr;
   SET_PTR_VAR_TO_NULL_WITH_NESTED_MACRO;
   *ptr = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>SET_PTR_VAR_TO_NULL_WITH_NESTED_MACRO</string>
-// CHECK-NEXT: <key>expansion</key><string>ptr =0</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>42</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:  <key>name</key><string>SET_PTR_VAR_TO_NULL_WITH_NESTED_MACRO</string>
+// CHECK-NEXT:  <key>expansion</key><string>ptr =0</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 //===----------------------------------------------------------------------===//
 // Tests for function-like macro expansions.
 //===----------------------------------------------------------------------===//
 
 void setToNull(int **vptr) {
   *vptr = nullptr;
 }
 
 #define TO_NULL(x) \
   setToNull(x)
 
 void functionLikeMacroTest() {
   int *ptr;
   TO_NULL(&ptr);
   *ptr = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>TO_NULL</string>
-// CHECK-NEXT: <key>expansion</key><string>setToNull(&amp;ptr)</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>73</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:  <key>name</key><string>TO_NULL(&amp;ptr)</string>
+// CHECK-NEXT:  <key>expansion</key><string>setToNull (&amp;ptr )</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 #define DOES_NOTHING(x) \
   {                     \
     int b;              \
     b = 5;              \
   }                     \
   print(x)
 
 #define DEREF(x)   \
   DOES_NOTHING(x); \
   *x
 
 void functionLikeNestedMacroTest() {
   int *a;
   TO_NULL(&a);
   DEREF(a) = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>TO_NULL</string>
-// CHECK-NEXT: <key>expansion</key><string>setToNull(&amp;a)</string>
-
-// CHECK: <key>name</key><string>DEREF</string>
-// CHECK-NEXT: <key>expansion</key><string>{ int b; b = 5; } print(a); *a</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>104</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>TO_NULL(&amp;a)</string>
+// CHECK-NEXT:   <key>expansion</key><string>setToNull (&amp;a )</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>105</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>DEREF(a)</string>
+// CHECK-NEXT:   <key>expansion</key><string>{int b ;b =5;}print (a );*a </string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 //===----------------------------------------------------------------------===//
 // Tests for undefining and/or redifining macros.
 //===----------------------------------------------------------------------===//
 
 #define WILL_UNDEF_SET_NULL_TO_PTR(ptr) \
   ptr = nullptr;
 
 void undefinedMacroByTheEndOfParsingTest() {
   int *ptr;
   WILL_UNDEF_SET_NULL_TO_PTR(ptr);
   *ptr = 5; // expected-warning{{Dereference of null pointer}}
 }
 
 #undef WILL_UNDEF_SET_NULL_TO_PTR
 
-// CHECK: <key>name</key><string>WILL_UNDEF_SET_NULL_TO_PTR</string>
-// CHECK-NEXT: <key>expansion</key><string>ptr = nullptr;</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>141</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>WILL_UNDEF_SET_NULL_TO_PTR(ptr)</string>
+// CHECK-NEXT:   <key>expansion</key><string>ptr =nullptr ;</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 #define WILL_REDIFINE_MULTIPLE_TIMES_SET_TO_NULL(ptr) \
   /* Nothing */
 #undef WILL_REDIFINE_MULTIPLE_TIMES_SET_TO_NULL
 #define WILL_REDIFINE_MULTIPLE_TIMES_SET_TO_NULL(ptr) \
   ptr = nullptr;
 
 void macroRedefinedMultipleTimesTest() {
   int *ptr;
   WILL_REDIFINE_MULTIPLE_TIMES_SET_TO_NULL(ptr)
   *ptr = 5; // expected-warning{{Dereference of null pointer}}
 }
 
 #undef WILL_REDIFINE_MULTIPLE_TIMES_SET_TO_NULL
 #define WILL_REDIFINE_MULTIPLE_TIMES_SET_TO_NULL(ptr)                      \
   print("This string shouldn't be in the plist file at all. Or anywhere, " \
         "but here.");
 
-// CHECK: <key>name</key><string>WILL_REDIFINE_MULTIPLE_TIMES_SET_TO_NULL</string>
-// CHECK-NEXT: <key>expansion</key><string>ptr = nullptr;</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>169</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>WILL_REDIFINE_MULTIPLE_TIMES_SET_TO_NULL(ptr)</string>
+// CHECK-NEXT:   <key>expansion</key><string>ptr =nullptr ;</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 #define WILL_UNDEF_SET_NULL_TO_PTR_2(ptr) \
   ptr = nullptr;
 
 #define PASS_PTR_TO_MACRO_THAT_WILL_BE_UNDEFD(ptr) \
   WILL_UNDEF_SET_NULL_TO_PTR_2(ptr)
 
 void undefinedMacroInsideAnotherMacroTest() {
   int *ptr;
   PASS_PTR_TO_MACRO_THAT_WILL_BE_UNDEFD(ptr);
   *ptr = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// TODO: Expand arguments.
-// CHECK: <key>name</key><string>PASS_PTR_TO_MACRO_THAT_WILL_BE_UNDEFD</string>
-// CHECK-NEXT: <key>expansion</key><string>ptr = nullptr;</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>200</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>PASS_PTR_TO_MACRO_THAT_WILL_BE_UNDEFD(ptr)</string>
+// CHECK-NEXT:   <key>expansion</key><string>ptr =nullptr ;</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 #undef WILL_UNDEF_SET_NULL_TO_PTR_2
 
 //===----------------------------------------------------------------------===//
 // Tests for macro arguments containing commas and parantheses.
 //
 // As of writing these tests, the algorithm expands macro arguments by lexing
 // the macro's expansion location, and relies on finding tok::comma and
 // tok::l_paren/tok::r_paren.
 //===----------------------------------------------------------------------===//
 
 // Note that this commas, parantheses in strings aren't parsed as tok::comma or
 // tok::l_paren/tok::r_paren, but why not test them.
 
 #define TO_NULL_AND_PRINT(x, str) \
   x = 0; \
   print(str)
 
 void macroArgContainsCommaInStringTest() {
   int *a;
   TO_NULL_AND_PRINT(a, "Will this , cause a crash?");
   *a = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>TO_NULL_AND_PRINT</string>
-// CHECK-NEXT: <key>expansion</key><string>a = 0; print( &quot;Will this , cause a crash?&quot;)</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>237</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>TO_NULL_AND_PRINT(a, &quot;Will this , cause a crash?&quot;)</string>
+// CHECK-NEXT:   <key>expansion</key><string>a =0;print (&quot;Will this , cause a crash?&quot;)</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 void macroArgContainsLParenInStringTest() {
   int *a;
   TO_NULL_AND_PRINT(a, "Will this ( cause a crash?");
   *a = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>TO_NULL_AND_PRINT</string>
-// CHECK-NEXT: <key>expansion</key><string>a = 0; print( &quot;Will this ( cause a crash?&quot;)</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>257</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>TO_NULL_AND_PRINT(a, &quot;Will this ( cause a crash?&quot;)</string>
+// CHECK-NEXT:   <key>expansion</key><string>a =0;print (&quot;Will this ( cause a crash?&quot;)</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 void macroArgContainsRParenInStringTest() {
   int *a;
   TO_NULL_AND_PRINT(a, "Will this ) cause a crash?");
   *a = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>TO_NULL_AND_PRINT</string>
-// CHECK-NEXT: <key>expansion</key><string>a = 0; print( &quot;Will this ) cause a crash?&quot;)</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>277</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>TO_NULL_AND_PRINT(a, &quot;Will this ) cause a crash?&quot;)</string>
+// CHECK-NEXT:   <key>expansion</key><string>a =0;print (&quot;Will this ) cause a crash?&quot;)</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 #define CALL_FUNCTION(funcCall)   \
   funcCall
 
 // Function calls do contain both tok::comma and tok::l_paren/tok::r_paren.
 
 void macroArgContainsLParenRParenTest() {
   int *a;
   CALL_FUNCTION(setToNull(&a));
   *a = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>CALL_FUNCTION</string>
-// CHECK-NEXT: <key>expansion</key><string>setToNull(&amp;a)</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>302</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>CALL_FUNCTION(setToNull(&amp;a))</string>
+// CHECK-NEXT:   <key>expansion</key><string>setToNull (&amp;a )</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 void setToNullAndPrint(int **vptr, const char *str) {
   setToNull(vptr);
   print(str);
 }
 
 void macroArgContainsCommaLParenRParenTest() {
   int *a;
   CALL_FUNCTION(setToNullAndPrint(&a, "Hello!"));
   *a = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>CALL_FUNCTION</string>
-// CHECK-NEXT: <key>expansion</key><string>setToNullAndPrint(&amp;a, &quot;Hello!&quot;)</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>327</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>CALL_FUNCTION(setToNullAndPrint(&amp;a, &quot;Hello!&quot;))</string>
+// CHECK-NEXT:   <key>expansion</key><string>setToNullAndPrint (&amp;a ,&quot;Hello!&quot;)</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 #define CALL_FUNCTION_WITH_TWO_PARAMS(funcCall, param1, param2) \
   funcCall(param1, param2)
 
 void macroArgContainsCommaLParenRParenTest2() {
   int *a;
   CALL_FUNCTION_WITH_TWO_PARAMS(setToNullAndPrint, &a, "Hello!");
   *a = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>CALL_FUNCTION_WITH_TWO_PARAMS</string>
-// CHECK-NEXT: <key>expansion</key><string>setToNullAndPrint( &amp;a, &quot;Hello!&quot;)</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>350</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>CALL_FUNCTION_WITH_TWO_PARAMS(setToNullAndPrint, &amp;a, &quot;Hello!&quot;)</string>
+// CHECK-NEXT:   <key>expansion</key><string>setToNullAndPrint (&amp;a ,&quot;Hello!&quot;)</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 #define CALL_LAMBDA(l) \
   l()
 
 void commaInBracketsTest() {
   int *ptr;
   const char str[] = "Hello!";
   // You need to add parantheses around a lambda expression to compile this,
   // else the comma in the capture will be parsed as divider of macro args.
   CALL_LAMBDA(([&ptr, str] () mutable { TO_NULL(&ptr); }));
   *ptr = 5; // expected-warning{{Dereference of null pointer}}
 }
-
-// CHECK: <key>name</key><string>CALL_LAMBDA</string>
-// CHECK-NEXT: <key>expansion</key><string>([&amp;ptr, str] () mutable { setToNull(&amp;ptr); })()</string>
+// FIXME: Why does the expansion appear twice?
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>376</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>CALL_LAMBDA(([&amp;ptr, str] () mutable { TO_NULL(&amp;ptr); }))</string>
+// CHECK-NEXT:   <key>expansion</key><string>([&amp;ptr ,str ]()mutable {setToNull (&amp;ptr );})()</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>376</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>CALL_LAMBDA(([&amp;ptr, str] () mutable { TO_NULL(&amp;ptr); }))</string>
+// CHECK-NEXT:   <key>expansion</key><string>([&amp;ptr ,str ]()mutable {setToNull (&amp;ptr );})()</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 #define PASTE_CODE(code) \
   code
 
 void commaInBracesTest() {
   PASTE_CODE({ // expected-warning{{Dereference of null pointer}}
     // NOTE: If we were to add a new variable here after a comma, we'd get a
     // compilation error, so this test is mainly here to show that this was also
     // investigated.
-
+    //
     // int *ptr = nullptr, a;
     int *ptr = nullptr;
     *ptr = 5;
   })
 }
 
-// CHECK: <key>name</key><string>PASTE_CODE</string>
-// CHECK-NEXT: <key>expansion</key><string>{ int *ptr = nullptr; *ptr = 5; }</string>
+// CHECK:        <key>macro_expansions</key>
+// CHECK-NEXT:   <array>
+// CHECK-NEXT:    <dict>
+// CHECK-NEXT:     <key>location</key>
+// CHECK-NEXT:     <dict>
+// CHECK-NEXT:      <key>line</key><integer>408</integer>
+// CHECK-NEXT:      <key>col</key><integer>3</integer>
+// CHECK-NEXT:      <key>file</key><integer>0</integer>
+// CHECK-NEXT:     </dict>
+// CHECK-NEXT:     <key>name</key><string>PASTE_CODE({ // expected-
+// CHECK-NEXT:    // NOTE: If we were to add a new variable here after a comma, we&apos;d get a
+// CHECK-NEXT:    // compilation error, so this test is mainly here to show that this was also
+// CHECK-NEXT:    // investigated.
+// CHECK-NEXT:    //
+// CHECK-NEXT:    // int *ptr = nullptr, a;
+// CHECK-NEXT:    int *ptr = nullptr;
+// CHECK-NEXT:    *ptr = 5;
+// CHECK-NEXT:  })</string>
+// CHECK-NEXT:     <key>expansion</key><string>{int *ptr =nullptr ;*ptr =5;}</string>
+// CHECK-NEXT:    </dict>
+// CHECK-NEXT:   </array>
 
 // Example taken from
 // https://gcc.gnu.org/onlinedocs/cpp/Macro-Arguments.html#Macro-Arguments.
 
 #define POTENTIALLY_EMPTY_PARAM(x, y) \
   x;                                  \
   y = nullptr
 
 void emptyParamTest() {
   int *ptr;
 
   POTENTIALLY_EMPTY_PARAM(,ptr);
   *ptr = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>POTENTIALLY_EMPTY_PARAM</string>
-// CHECK-NEXT: <key>expansion</key><string>;ptr = nullptr</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>451</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>POTENTIALLY_EMPTY_PARAM(,ptr)</string>
+// CHECK-NEXT:   <key>expansion</key><string>;ptr =nullptr </string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 #define NESTED_EMPTY_PARAM(a, b) \
   POTENTIALLY_EMPTY_PARAM(a, b);
 
 
 void nestedEmptyParamTest() {
   int *ptr;
 
   NESTED_EMPTY_PARAM(, ptr);
   *ptr = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>NESTED_EMPTY_PARAM</string>
-// CHECK-NEXT: <key>expansion</key><string>; ptr = nullptr;</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>476</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>NESTED_EMPTY_PARAM(, ptr)</string>
+// CHECK-NEXT:   <key>expansion</key><string>;ptr =nullptr ;</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 #define CALL_FUNCTION_WITH_ONE_PARAM_THROUGH_MACRO(func, param) \
   CALL_FUNCTION(func(param))
 
 void lParenRParenInNestedMacro() {
   int *ptr;
   CALL_FUNCTION_WITH_ONE_PARAM_THROUGH_MACRO(setToNull, &ptr);
   *ptr = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>CALL_FUNCTION_WITH_ONE_PARAM_THROUGH_MACRO</string>
-// CHECK-NEXT: <key>expansion</key><string>setToNull( &amp;ptr)</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>499</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>CALL_FUNCTION_WITH_ONE_PARAM_THROUGH_MACRO(setToNull, &amp;ptr)</string>
+// CHECK-NEXT:   <key>expansion</key><string>setToNull (&amp;ptr )</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 //===----------------------------------------------------------------------===//
 // Tests for variadic macro arguments.
 //===----------------------------------------------------------------------===//
 
 template <typename ...Args>
 void variadicFunc(Args ...args);
 
 #define VARIADIC_SET_TO_NULL(ptr, ...) \
   ptr = nullptr;                       \
   variadicFunc(__VA_ARGS__)
 
 void variadicMacroArgumentTest() {
   int *ptr;
   VARIADIC_SET_TO_NULL(ptr, 1, 5, "haha!");
   *ptr = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>VARIADIC_SET_TO_NULL</string>
-// CHECK-NEXT: <key>expansion</key><string>ptr = nullptr; variadicFunc( 1, 5, &quot;haha!&quot;)</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>530</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>VARIADIC_SET_TO_NULL(ptr, 1, 5, &quot;haha!&quot;)</string>
+// CHECK-NEXT:   <key>expansion</key><string>ptr =nullptr ;variadicFunc (1,5,&quot;haha!&quot;)</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 void variadicMacroArgumentWithoutAnyArgumentTest() {
   int *ptr;
   // Not adding a single parameter to ... is silly (and also causes a
   // preprocessor warning), but is not an excuse to crash on it.
   VARIADIC_SET_TO_NULL(ptr);
   *ptr = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>VARIADIC_SET_TO_NULL</string>
-// CHECK-NEXT: <key>expansion</key><string>ptr = nullptr; variadicFunc()</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>552</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>VARIADIC_SET_TO_NULL(ptr)</string>
+// CHECK-NEXT:   <key>expansion</key><string>ptr =nullptr ;variadicFunc ()</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 //===----------------------------------------------------------------------===//
 // Tests for # and ##.
 //===----------------------------------------------------------------------===//
 
 #define DECLARE_FUNC_AND_SET_TO_NULL(funcName, ptr) \
   void generated_##funcName();                      \
   ptr = nullptr;
 
 void hashHashOperatorTest() {
   int *ptr;
   DECLARE_FUNC_AND_SET_TO_NULL(whatever, ptr);
   *ptr = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>DECLARE_FUNC_AND_SET_TO_NULL</string>
-// CHECK-NEXT: <key>expansion</key><string>void generated_whatever(); ptr = nullptr;</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>580</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>DECLARE_FUNC_AND_SET_TO_NULL(whatever, ptr)</string>
+// CHECK-NEXT:   <key>expansion</key><string>void generated_whatever ();ptr =nullptr ;</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 void macroArgContainsHashHashInStringTest() {
   int *a;
   TO_NULL_AND_PRINT(a, "Will this ## cause a crash?");
   *a = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>TO_NULL_AND_PRINT</string>
-// CHECK-NEXT: <key>expansion</key><string>a = 0; print( &quot;Will this ## cause a crash?&quot;)</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>600</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>TO_NULL_AND_PRINT(a, &quot;Will this ## cause a crash?&quot;)</string>
+// CHECK-NEXT:   <key>expansion</key><string>a =0;print (&quot;Will this ## cause a crash?&quot;)</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 #define PRINT_STR(str, ptr) \
   print(#str);              \
   ptr = nullptr
 
 void hashOperatorTest() {
   int *ptr;
   PRINT_STR(Hello, ptr);
   *ptr = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>PRINT_STR</string>
-// CHECK-NEXT: <key>expansion</key><string>print(&quot;Hello&quot;); ptr = nullptr</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>624</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>PRINT_STR(Hello, ptr)</string>
+// CHECK-NEXT:   <key>expansion</key><string>print (&quot;Hello&quot;);ptr =nullptr </string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 void macroArgContainsHashInStringTest() {
   int *a;
   TO_NULL_AND_PRINT(a, "Will this # cause a crash?");
   *a = 5; // expected-warning{{Dereference of null pointer}}
 }
 
-// CHECK: <key>name</key><string>TO_NULL_AND_PRINT</string>
-// CHECK-NEXT: <key>expansion</key><string>a = 0; print( &quot;Will this # cause a crash?&quot;)</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>644</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>TO_NULL_AND_PRINT(a, &quot;Will this # cause a crash?&quot;)</string>
+// CHECK-NEXT:   <key>expansion</key><string>a =0;print (&quot;Will this # cause a crash?&quot;)</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 //===----------------------------------------------------------------------===//
 // Tests for more complex macro expansions.
 //
 // We won't cover anything that wasn't covered up to this point, but rather
 // show more complex, macros with deeper nesting, more arguments (some unused)
 // and so on.
 //===----------------------------------------------------------------------===//

 int getLowestCommonDenominator(int A, int B) {
   EUCLIDEAN_ALGORITHM(A, B) // expected-warning{{Division by zero}}
 }
 
 void testVeryComplexAlgorithm() {
   int tmp = 8 / (getLowestCommonDenominator(5, 7) - 1);
   print(&tmp);
 }
-// CHECK: <key>name</key><string>EUCLIDEAN_ALGORITHM</string>
-// CHECK-NEXT: <key>expansion</key><string>if (A&lt;0 ){A=-A;} if ( B&lt;0 ){ B=- B;}return B / ( B - B);</string>
+
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>698</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>EUCLIDEAN_ALGORITHM(A, B)</string>
+// CHECK-NEXT:   <key>expansion</key><string>if (A &lt;0){A =-A ;}if (B &lt;0){B =-B ;}return B /(B -B );</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 #define YET_ANOTHER_SET_TO_NULL(x, y, z)   \
   print((void *) x);                       \
   print((void *) y);                       \
   z = nullptr;
 
 #define DO_NOTHING(str) str
 #define DO_NOTHING2(str2) DO_NOTHING(str2)
 
 void test() {
   int *ptr;
   YET_ANOTHER_SET_TO_NULL(5, DO_NOTHING2("Remember the Vasa"), ptr);
   *ptr = 5; // expected-warning{{Dereference of null pointer}}
 }
-// CHECK: <key>name</key><string>YET_ANOTHER_SET_TO_NULL</string>
-// CHECK-NEXT: <key>expansion</key><string>print((void *)5); print((void *)&quot;Remember the Vasa&quot;); ptr = nullptr;</string>
+
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>730</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>YET_ANOTHER_SET_TO_NULL(5, DO_NOTHING2(&quot;Remember the Vasa&quot;), ptr)</string>
+// CHECK-NEXT:   <key>expansion</key><string>print ((void *)5);print ((void *)&quot;Remember the Vasa&quot;);ptr =nullptr ;</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 int garbage_value;
 
 #define REC_MACRO_FUNC(REC_MACRO_PARAM) garbage_##REC_MACRO_PARAM
 #define value REC_MACRO_FUNC(value)
 
 void recursiveMacroUser() {
   if (value == 0)
     1 / value; // expected-warning{{Division by zero}}
                // expected-warning@-1{{expression result unused}}
 }
 
-// CHECK: <key>name</key><string>value</string>
-// CHECK-NEXT: <key>expansion</key><string>garbage_</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>754</integer>
+// CHECK-NEXT:    <key>col</key><integer>7</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>value</string>
+// CHECK-NEXT:   <key>expansion</key><string>garbage_value </string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 #define FOO(x) int foo() { return x; }
 #define APPLY_ZERO1(function) function(0)
 
 APPLY_ZERO1(FOO)
 void useZeroApplier1() { (void)(1 / foo()); } // expected-warning{{Division by zero}}
 
-// CHECK: <key>name</key><string>APPLY_ZERO1</string>
-// CHECK-NEXT: <key>expansion</key><string>int foo() { return x; }(0)</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>776</integer>
+// CHECK-NEXT:    <key>col</key><integer>1</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>APPLY_ZERO1(FOO)</string>
+// CHECK-NEXT:   <key>expansion</key><string>int foo (){return 0;}</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 #define BAR(x) int bar() { return x; }
 #define APPLY_ZERO2 BAR(0)
 
 APPLY_ZERO2
 void useZeroApplier2() { (void)(1 / bar()); } // expected-warning{{Division by zero}}
 
-// CHECK: <key>name</key><string>APPLY_ZERO2</string>
-// CHECK-NEXT: <key>expansion</key><string>int bar() { return 0; }</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>796</integer>
+// CHECK-NEXT:    <key>col</key><integer>1</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>APPLY_ZERO2</string>
+// CHECK-NEXT:   <key>expansion</key><string>int bar (){return 0;}</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 void foo(int &x, const char *str);
 
 #define PARAMS_RESOLVE_TO_VA_ARGS(i, fmt) foo(i, fmt); \
   i = 0;
 #define DISPATCH(...) PARAMS_RESOLVE_TO_VA_ARGS(__VA_ARGS__);
 
 void mulitpleParamsResolveToVA_ARGS(void) {
   int x = 1;
   DISPATCH(x, "LF1M healer");
   (void)(10 / x); // expected-warning{{Division by zero}}
 }
-// CHECK: <key>name</key><string>DISPATCH</string>
-// CHECK-NEXT: <key>expansion</key><string>foo(x, &quot;LF1M healer&quot;);x = 0;;</string>
+
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>821</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>DISPATCH(x, &quot;LF1M healer&quot;)</string>
+// CHECK-NEXT:   <key>expansion</key><string>foo (x ,&quot;LF1M healer&quot;);x =0;;</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 void variadicCFunction(int &x, const char *str, ...);
 
 #define CONCAT_VA_ARGS(i, fmt, ...) variadicCFunction(i, fmt, ##__VA_ARGS__); \
   i = 0;
 
 void concatVA_ARGS(void) {
   int x = 1;
   CONCAT_VA_ARGS(x, "You need to construct additional pylons.", 'c', 9);
   (void)(10 / x); // expected-warning{{Division by zero}}
 }
-// CHECK: <key>name</key><string>CONCAT_VA_ARGS</string>
-// CHECK-NEXT: <key>expansion</key><string>variadicCFunction(x, &quot;You need to construct additional pylons.&quot;,&apos;c&apos;, 9);x = 0;</string>
+
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>846</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>CONCAT_VA_ARGS(x, &quot;You need to construct additional pylons.&quot;, &apos;c&apos;, 9)</string>
+// CHECK-NEXT:   <key>expansion</key><string>variadicCFunction (x ,&quot;You need to construct additional pylons.&quot;,&apos;c&apos;,9);x =0;</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 void concatVA_ARGSEmpty(void) {
   int x = 1;
   CONCAT_VA_ARGS(x, "You need to construct");
   (void)(10 / x); // expected-warning{{Division by zero}}
 }
-// FIXME: The comma shouldn't be present after the last argument.
-// CHECK: <key>name</key><string>CONCAT_VA_ARGS</string>
-// CHECK-NEXT: <key>expansion</key><string>variadicCFunction(x, &quot;You need to construct&quot;,);x = 0;</string>
+
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>866</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>CONCAT_VA_ARGS(x, &quot;You need to construct&quot;)</string>
+// CHECK-NEXT:   <key>expansion</key><string>variadicCFunction (x ,&quot;You need to construct&quot;);x =0;</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 #define STRINGIFIED_VA_ARGS(i, fmt, ...) variadicCFunction(i, fmt, #__VA_ARGS__); \
   i = 0;
 
 void stringifyVA_ARGS(void) {
   int x = 1;
   STRINGIFIED_VA_ARGS(x, "Additional supply depots required.", 'a', 10);
   (void)(10 / x); // expected-warning{{Division by zero}}
 }
 
-// FIXME: Stringify and escape __VA_ARGS__ correctly.
-// CHECK: <key>name</key><string>STRINGIFIED_VA_ARGS</string>
-// CHECK-NEXT: <key>expansion</key><string>variadicCFunction(x, &quot;Additional supply depots required.&quot;,  &quot;&apos;a&apos;&quot;, 10);x = 0;</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>889</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>STRINGIFIED_VA_ARGS(x, &quot;Additional supply depots required.&quot;, &apos;a&apos;, 10)</string>
+// CHECK-NEXT:   <key>expansion</key><string>variadicCFunction (x ,&quot;Additional supply depots required.&quot;,&quot;&apos;a&apos;, 10&quot;);x =0;</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 void stringifyVA_ARGSEmpty(void) {
   int x = 1;
   STRINGIFIED_VA_ARGS(x, "Additional supply depots required.");
   (void)(10 / x); // expected-warning{{Division by zero}}
 }
 
-// FIXME: Stringify and escape __VA_ARGS__ correctly.
-// CHECK: <key>name</key><string>STRINGIFIED_VA_ARGS</string>
-// CHECK-NEXT: <key>expansion</key><string>variadicCFunction(x, &quot;Additional supply depots required.&quot;, &quot;)&quot;;x = 0;</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>909</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>STRINGIFIED_VA_ARGS(x, &quot;Additional supply depots required.&quot;)</string>
+// CHECK-NEXT:   <key>expansion</key><string>variadicCFunction (x ,&quot;Additional supply depots required.&quot;,&quot;&quot;);x =0;</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>
 
 // bz44493: Support GNU-style named variadic arguments in plister
 #define BZ44493_GNUVA(i, args...)  --(i);
 
 int bz44493(void) {
   int a = 2;
   BZ44493_GNUVA(a);
   BZ44493_GNUVA(a, "arg2");
   (void)(10 / a); // expected-warning{{Division by zero}}
   return 0;
 }
 
-// CHECK: <key>name</key><string>BZ44493_GNUVA</string>
-// CHECK-NEXT: <key>expansion</key><string>--(a);</string>
+// CHECK:      <key>macro_expansions</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT:  <dict>
+// CHECK-NEXT:   <key>location</key>
+// CHECK-NEXT:   <dict>
+// CHECK-NEXT:    <key>line</key><integer>933</integer>
+// CHECK-NEXT:    <key>col</key><integer>3</integer>
+// CHECK-NEXT:    <key>file</key><integer>0</integer>
+// CHECK-NEXT:   </dict>
+// CHECK-NEXT:   <key>name</key><string>BZ44493_GNUVA(a, &quot;arg2&quot;)</string>
+// CHECK-NEXT:   <key>expansion</key><string>--(a );</string>
+// CHECK-NEXT:  </dict>
+// CHECK-NEXT: </array>