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[asan] better warning messages for double-free bugs (provide allocation/deallocation stack traces) 

llvm-svn: 150027
This commit is contained in:
Kostya Serebryany 2012-02-08 00:42:29 +00:00
parent f76dd56dd3
commit 9716914b2d
2 changed files with 6 additions and 2 deletions
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2
compiler-rt/lib/asan/asan_allocator.cc
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@ -686,7 +686,7 @@ static void Deallocate(uint8_t *ptr, AsanStackTrace *stack) {
if (m->chunk_state == CHUNK_QUARANTINE) {
Report("ERROR: AddressSanitizer attempting double-free on %p:\n", ptr);
stack->PrintStack();
m->DescribeAddress((uintptr_t)ptr, 1);
Describe((uintptr_t)ptr, 1);
ShowStatsAndAbort();
} else if (m->chunk_state != CHUNK_ALLOCATED) {
Report("ERROR: AddressSanitizer attempting free on address which was not"

6
compiler-rt/lib/asan/tests/asan_test.cc
View File

@ -564,7 +564,11 @@ void DoubleFree() {
}
TEST(AddressSanitizer, DoubleFreeTest) {
EXPECT_DEATH(DoubleFree(), "ERROR: AddressSanitizer attempting double-free");
EXPECT_DEATH(DoubleFree(), ASAN_PCRE_DOTALL
"ERROR: AddressSanitizer attempting double-free"
".*is located 0 bytes inside of 400-byte region"
".*freed by thread T0 here"
".*previously allocated by thread T0 here");
}
template<int kSize>