[asan] Reify ErrorInvalidPointerPair

[filcab]

Summary

Continue work on PR30351

[vitalybuka]

LGTM

compiler-rt/trunk/lib/asan/asan_errors.h

ErrorODRViolation(u32 tid, const __asan_global *g1, u32 stack_id1_,
       : ErrorBase(tid),
         global1(*g1),
         global2(*g2),
         stack_id1(stack_id1_),
         stack_id2(stack_id2_) {}
   void Print();
 };
 
+struct ErrorInvalidPointerPair : ErrorBase {
+  uptr pc, bp, sp, p1, p2;
+  // VS2013 doesn't implement unrestricted unions, so we need a trivial default
+  // constructor
+  ErrorInvalidPointerPair() = default;
+  ErrorInvalidPointerPair(u32 tid, uptr pc_, uptr bp_, uptr sp_, uptr p1_,
+                          uptr p2_)
+      : ErrorBase(tid), pc(pc_), bp(bp_), sp(sp_), p1(p1_), p2(p2_) {}
+  void Print();
+};
+
 // clang-format off
 #define ASAN_FOR_EACH_ERROR_KIND(macro)         \
   macro(StackOverflow)                          \
   macro(DeadlySignal)                           \
   macro(DoubleFree)                             \
   macro(NewDeleteSizeMismatch)                  \
   macro(FreeNotMalloced)                        \
   macro(AllocTypeMismatch)                      \
   macro(MallocUsableSizeNotOwned)               \
   macro(SanitizerGetAllocatedSizeNotOwned)      \
   macro(StringFunctionMemoryRangesOverlap)      \
   macro(StringFunctionSizeOverflow)             \
   macro(BadParamsToAnnotateContiguousContainer) \
-  macro(ODRViolation)
+  macro(ODRViolation)                           \
+  macro(InvalidPointerPair)
 // clang-format on
 
 #define ASAN_DEFINE_ERROR_KIND(name) kErrorKind##name,
 #define ASAN_ERROR_DESCRIPTION_MEMBER(name) Error##name name;
 #define ASAN_ERROR_DESCRIPTION_CONSTRUCTOR(name) \
   ErrorDescription(Error##name const &e) : kind(kErrorKind##name), name(e) {}
 #define ASAN_ERROR_DESCRIPTION_PRINT(name) \
   case kErrorKind##name:                   \

compiler-rt/trunk/lib/asan/asan_errors.cc

Report(
       "HINT: if you don't care about these errors you may set "
       "ASAN_OPTIONS=detect_odr_violation=0\n");
   InternalScopedString error_msg(256);
   error_msg.append("odr-violation: global '%s' at %s",
                    MaybeDemangleGlobalName(global1.name), g1_loc.data());
   ReportErrorSummary(error_msg.data());
 }
 
+void ErrorInvalidPointerPair::Print() {
+  const char *bug_type = "invalid-pointer-pair";
+  Decorator d;
+  Printf("%s", d.Warning());
+  Report("ERROR: AddressSanitizer: invalid-pointer-pair: %p %p\n", p1, p2);
+  Printf("%s", d.EndWarning());
+  GET_STACK_TRACE_FATAL(pc, bp);
+  stack.Print();
+  PrintAddressDescription(p1, 1, bug_type);
+  PrintAddressDescription(p2, 1, bug_type);
+  ReportErrorSummary(bug_type, &stack);
+}
+
 }  // namespace __asan

compiler-rt/trunk/lib/asan/asan_report.cc

void ReportODRViolation(const __asan_global *g1, u32 stack_id1,
                         const __asan_global *g2, u32 stack_id2) {
   ScopedInErrorReport in_report;
   ErrorODRViolation error(GetCurrentTidOrInvalid(), g1, stack_id1, g2,
                           stack_id2);
   in_report.ReportError(error);
 }
 
 // ----------------------- CheckForInvalidPointerPair ----------- {{{1
-static NOINLINE void
-ReportInvalidPointerPair(uptr pc, uptr bp, uptr sp, uptr a1, uptr a2) {
+static NOINLINE void ReportInvalidPointerPair(uptr pc, uptr bp, uptr sp,
+                                              uptr a1, uptr a2) {
   ScopedInErrorReport in_report;
-  const char *bug_type = "invalid-pointer-pair";
-  Decorator d;
-  Printf("%s", d.Warning());
-  Report("ERROR: AddressSanitizer: invalid-pointer-pair: %p %p\n", a1, a2);
-  Printf("%s", d.EndWarning());
-  GET_STACK_TRACE_FATAL(pc, bp);
-  stack.Print();
-  PrintAddressDescription(a1, 1, bug_type);
-  PrintAddressDescription(a2, 1, bug_type);
-  ReportErrorSummary(bug_type, &stack);
+  ErrorInvalidPointerPair error(GetCurrentTidOrInvalid(), pc, bp, sp, a1, a2);
+  in_report.ReportError(error);
 }
 
 static INLINE void CheckForInvalidPointerPair(void *p1, void *p2) {
   if (!flags()->detect_invalid_pointer_pairs) return;
   uptr a1 = reinterpret_cast<uptr>(p1);
   uptr a2 = reinterpret_cast<uptr>(p2);
   AsanChunkView chunk1 = FindHeapChunkByAddress(a1);
   AsanChunkView chunk2 = FindHeapChunkByAddress(a2);