[Bug debug/84317] [8 regression] SEGV in dwarf2out.c (dwarf2out_source_line)

["ro at CeBiTec dot Uni-Bielefeld.DE" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84317

--- Comment #5 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #3 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot
> Uni-Bielefeld.DE> ---
>> --- Comment #2 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot
>> Uni-Bielefeld.DE> ---
> [...]
>> I'm currently running a couple of bootstraps (Solaris 10, 11.3, 11.3
>> with as/ld and gas/ld on SPARC, Solaris 10 with as/ld, Solaris 11.3 with
>> gas/ld, Solaris 11.4 with gas/gld on x86) with a tree that has
>>
>>         https://gcc.gnu.org/ml/gcc-patches/2018-02/msg00624.html
>>
>> applied to check if that fixes either or both of this PR and PR
>> debug/84319.
[...]
> Removing the #pragma GCC poison and trying again...

They've all completed successfully now, no regressions compared to the
last successful builds, i.e. both the SEGVs and the

error: can't compute difference between symbols in different segments

errors are gone.

The only caveat is that locview is disabled on Solaris/x86 with as
(neither HAVE_AS_DWARF2_DEBUG_LINE nor HAVE_AS_DWARF2_DEBUG_VIEW
defined) where the builds succeeded before your latest patch.

        Rainer