add debug code to chase down a rare crash in asan/lsan https://github.com/google/sanitizers/issues/1193

[kcc]

Summary

add debug code to chase down a rare crash in asan/lsan https://github.com/google/sanitizers/issues/1193

[kcc]

(fix typo)

[kcc]

(update)

[kcc]

Submitted: https://github.com/llvm/llvm-project/commit/2e6c3e3e7b5eb46452b1819c69919fab820b4233
(had some trouble with arc... pushed via git push instead of arc land)

[vitalybuka]

In D80967#2067843, @kcc wrote:

Submitted: https://github.com/llvm/llvm-project/commit/2e6c3e3e7b5eb46452b1819c69919fab820b4233
(had some trouble with arc... pushed via git push instead of arc land)

issue is going to be updated/closed automatically even after git push, but with some delay

compiler-rt/lib/asan/asan_allocator.cpp

 // Debug code. Delete once issue #1193 is chased down.
 extern "C" SANITIZER_WEAK_ATTRIBUTE const char *__lsan_current_stage;
 
 uptr GetUserBegin(uptr chunk) {
   __asan::AsanChunk *m = __asan::instance.GetAsanChunkByAddrFastLocked(chunk);
   if (!m)
     Printf(
         "ASAN is about to crash with a CHECK failure.\n"
-        "The ASAN developers are trying to chaise down this bug,\n"
+        "The ASAN developers are trying to chase down this bug,\n"
         "so if you've encountered this bug please let us know.\n"
         "See also: https://github.com/google/sanitizers/issues/1193\n"
         "chunk: %p caller %p __lsan_current_stage %s\n",
         chunk, GET_CALLER_PC(), __lsan_current_stage);
   CHECK(m);
   return m->Beg();
 }