[Bug sanitizer/55521] many instances of ASAN:SIGSEGV failures in g++ testsuite with -fsanitize=address

[dvyukov at google dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55521

Dmitry Vyukov <dvyukov at google dot com> changed:

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                 CC|                            |dvyukov at google dot com

--- Comment #18 from Dmitry Vyukov <dvyukov at google dot com> 2012-12-03 04:08:52 UTC ---
(In reply to comment #17)
> Revised patch posted at
> http://gcc.gnu.org/ml/gcc-patches/2012-12/msg00084.html. Also tested with a
> build of xplor-nih (a complex mix of c, c++ and fortran code) which has always
> had optimization issues with FSF gcc (as xplor-nih has its own heap memory
> manager routines in fortran). A build of xplor-nih with -fsanitize=address
> produced 41 failures out of 154 tests but all of the failures emitted
> AddressSanitizer output (often unknown-crash on address) rather than
> segfaulting.

I guess it's asan signal handler transforms paging faults into "unknown-crash
on address".

But the real asan reports, do they make sense? I mean is it real bugs in user
code, or some nonsense?