https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101476
--- Comment #13 from Stas Sergeev <stsp at users dot sourceforge.net> --- Found another problem. https://github.com/gcc-mirror/gcc/blob/master/libsanitizer/asan/asan_posix.cpp#L53 The comment above that line talks about SS_AUTODISARM, but the line itself does not account for any flags. In a mean time, linux returns SS_DISABLE in combination with flags, like SS_AUTODISARM. So the "!=" check should not be used. My app probes for SS_AUTODISARM by trying to set it, and after that, asan breaks. This is quite cludgy though. Should the check be changed to if (!(signal_stack.ss_flags & SS_DISABLE)) or maybe linux should not return any flags together with SS_DISABLE? man page talks "strange things" on that subject.
