[asan] Fix handle_abort_on_error.cc test on Darwin, add back SIGABRT

[kubamracek]

Summary

1. r280885 added a testcase for handle_abort, which is broken on macOS, let’s add this support into sanitizer_mac.cc.

2. https://reviews.llvm.org/D23873 accidentally removed “SIGABRT” from DescribeSignalOrException, let’s put it back.

[filcab]

LGTM.
Thank you.

P.S: Earlier it looked like it was a commit, not a patch.

lib/asan/asan_posix.cc

43 ↗

(On Diff #70693)

This has since been added back. Sorry.

compiler-rt/trunk/lib/sanitizer_common/sanitizer_mac.cc

void ListOfModules::init() {
   MemoryMappingLayout memory_mapping(false);
   memory_mapping.DumpListOfModules(&modules_);
 }
 
 bool IsHandledDeadlySignal(int signum) {
   if ((SANITIZER_WATCHOS || SANITIZER_TVOS) && !(SANITIZER_IOSSIM))
     // Handling fatal signals on watchOS and tvOS devices is disallowed.
     return false;
+  if (common_flags()->handle_abort && signum == SIGABRT)
+    return true;
   return (signum == SIGSEGV || signum == SIGBUS) && common_flags()->handle_segv;
 }
 
 MacosVersion cached_macos_version = MACOS_VERSION_UNINITIALIZED;
 
 MacosVersion GetMacosVersionInternal() {
   int mib[2] = { CTL_KERN, KERN_OSRELEASE };
   char version[100];