[Bug sanitizer/80953] Support libsanitizer on Solaris

[ro at CeBiTec dot Uni-Bielefeld.DE]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80953

--- Comment #24 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #22 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
>> I think it is important to find out why there are those differences in line
>> numbers.  Is libbacktrace broken on Solaris, or not used at all, something
>> different?
>
> AFAICS they only occur with optimization enabled.

Indeed: in the cases where the output pattern test failures also occur
at -O0, there are different issues, not just slight line number
differences.