https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81968
--- Comment #70 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot
Uni-Bielefeld.DE> ---
> --- Comment #63 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> Are the remaining issues only related to .debug_macro, or other stuff too?
> If only .debug_macro, does:
> --- gcc/dwarf2out.c 2018-03-11 17:48:53.498068316 +0100
> +++ gcc/dwarf2out.c 2018-03-13 10:58:03.477514623 +0100
> @@ -28282,6 +28282,7 @@ output_macinfo (const char *debug_line_l
> case DW_MACINFO_undef:
> if ((!dwarf_strict || dwarf_version >= 5)
> && HAVE_COMDAT_GROUP
> + && !flag_lto
> && vec_safe_length (files) != 1
> && i > 0
> && i + 1 < length
> help? If yes, we could go for && (!flag_lto || !HAVE_BROKEN_LD_WHATEVER)
> and add configure test for that.
It does (bootstrapped on both i386-pc-solaris2.11 and
sparc-sun-solaris2.11). One could also add -z relax=comdat in
the ld invocation inlto-wrapper if everything else fails. ld(1) has
-z relax=item1,item2,...
The link-editor performs validity checks in order to ensure that
the resulting output object is valid and usable at runtime. In
addition, the link-editor can transition a variety of relocations
to generate more optimal instruction sequences.
The -z relax option can be used to relax these operations in order
to produce an output object that would otherwise be rejected.
Note -
Disabling validity checks can result in the creation of a corrupt
or otherwise unusable object. The -z relax option is a special-
ized option, mainly of interest to compiler authors, and is not
intended for general use.
The following item tokens are recognized.
[...]
comdat
A relocation that remains against a symbol that has been elimi-
nated as part of a COMDAT section, results in a fatal error.
The -z relax=comdat option redirects such relocations to an
equivalent symbol in a retained COMDAT section.
