On Thu, Jun 07, 2018 at 10:31:29AM +0200, Olivier Hainque wrote:
> 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 ?
No, this is just wrong.
The whole point of -gstrict-dwarf is that it doesn't allow any extensions,
and DW_LANG_Ada83/DW_LANG_Ada95 only appeared in DWARF3.
Perhaps don't use -gstrict-dwarf if you are using gdb which should handle
not just DWARF extensions, but also DWARF3/4, so even -gdwarf-4
-gno-strict-dwarf?
Jakub
