[Bug sanitizer/79341] Many Asan tests fail on s390

[vogt at linux dot vnet.ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79341

--- Comment #53 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
(In reply to Dominik Vogt from comment #51)
> With r245382 plus the patch from comment 43, only the failure in
> null-deref-1.c is left.

Ah, not quite; no fails with -m31; with -m64 null-deref-1.c fails with c and
c++, and memcmp-1.c with c++ only.  Was any of this shupposed to be fixed? 
This thread has become a bit confusing.