https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87880
Bug ID: 87880
Summary: [9 regression] All macOS asan execution tests FAIL
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
iains at gcc dot gnu.org, jakub at gcc dot gnu.org, kcc at
gcc dot gnu.org,
marxin at gcc dot gnu.org, mikestump at comcast dot net
Target Milestone: ---
Target: *-*-apple-darwin*
Since the recent merge of libsanitizer from upstream, all asan execution tests
FAIL on Darwin (seen on Mac OS X 10.7, but the same issue is still present on
macOS 10.14):
FAIL: c-c++-common/asan/alloca_big_alignment.c -O0 output pattern test
Output was:
dyld: Symbol not found: ___cxa_rethrow_primary_exception
Referenced from:
/private/var/gcc/regression/trunk/10.7-gcc/build/x86_64-apple-darwin11.4.2/./libsanitizer/asan/.libs/libasan.5.dylib
Expected in: flat namespace
in
/private/var/gcc/regression/trunk/10.7-gcc/build/x86_64-apple-darwin11.4.2/./libsanitizer/asan/.libs/libasan.5.dylib
The merge introduced a new interceptor in asan/asan_interceptors.cc:
#if ASAN_INTERCEPT___CXA_RETHROW_PRIMARY_EXCEPTION
INTERCEPTOR(void, __cxa_rethrow_primary_exception, void *a) {
CHECK(REAL(__cxa_rethrow_primary_exception));
__asan_handle_no_return();
REAL(__cxa_rethrow_primary_exception)(a);
}
#endif
with ASAN_INTERCEPT___CXA_RETHROW_PRIMARY_EXCEPTION defined in
asan/asan_interceptors.h. However, that function is only defined in libc++abi,
which is linked on macOS in LLVM compiler-rt, but not present in gcc.
I've hacked around this by disabling the interception inside my tree, but don't
know how to properly handle this.
