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

[uweigand at gcc dot gnu.org]

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

--- Comment #71 from Ulrich Weigand <uweigand at gcc dot gnu.org> ---
(In reply to Dominik Vogt from comment #70)
> If funny line information is the only consequence, no.  Is it safe to assume
> that libsanitizer won't crash or produce garbege because of this?

Why should line infomation be "funny"?  With the odd addresses (decremented by
one), line information should identify the line of the call, otherwise we'd get
the line *after* the call.  IMO identifying the call is actually better ...