[LLVMdev] UBSan on AArch64

[Renato Golin]

Kostya, Christophe,

I'm running the full tests on AARch64 and the only RT test that fails is:

UndefinedBehaviorSanitizer-Standalone :: TestCases/Float/cast-overflow.cpp

The problem seems to be a trap in __sanitizer::internal_memchr() while
trying to handle __ubsan::__ubsan_handle_float_cast_overflow().

I haven't looked at it in detail, has anyone seen this? Is UBSan meant
to run on AArch64? Should we mark this test XFAIL until it can be
looked at properly?

cheers,
--renato