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

[jakub at gcc dot gnu.org]

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

--- Comment #49 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
On the other side, we don't turn -fno-omit-frame-pointer or
-mno-omit-leaf-frame-pointer for -fsanitize=address on other targets either,
perhaps this is just a documentation issue.  I'll add -mbackchain to this
testcase.  Perhaps we should just mention those flags in -fsanitize=address
documentation in invoke.texi.