[patch] dwarf2out don't discriminate on dwarf version for advertising Ada

[Olivier Hainque <hainque at adacore dot com>]

Hello,

dwarf2out currently prevents advertising DW_LANG_Ada if
version < 3 and strict_dwarf. There is no good reason for
this and it is detrimental to gdb on some VxWorks configurations.

This patch just moves the DW_LANG_Ada language selection
out of the section guarded by the special version check.

We have been using this for months on gcc-6 and gcc-7 on all
our targets without unexpected fallouts and it fixed a few issues
with gdb on VxWorks.

Bootstrapped and regression tests fine with trunk on x86_64-linux.

Ok to commit ?

Thanks in advance!

With Kind Regards,

2018-06-07  Olivier Hainque  <hainque@adacore.com>

        * dwarf2out.c (gen_compile_unit_die): Don't filter on dwarf
        version or srictness to advertise Ada language.

Attachment: 0003-Don-t-discriminate-on-dwarf-version-to-select-Ada-la.patch
Description: Binary data