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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug debug/91239] gcc generates invalid .debug_macro sections
 (according to lld folks)
Date: Wed, 20 Apr 2022 07:14:27 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D91239

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
See also https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99618 and
https://sourceware.org/bugzilla/show_bug.cgi?id=3D27590
>>From DWARF5 it is clear what needs to happen and giving up on the
DW_MACRO_import deduplication would mean 10x growth of .debug_macro or how =
much
on average.
Furthermore, due to the ill-designed -fuse-ld=3D option which allows users =
to
easily switch to a linker which doesn't support what has been determined du=
ring
gcc configure time from the linker tested at that time we can't easily disa=
ble
DW_MACRO_import just for selected linkers like mold.
So, I think those linkers simply have to support this, whether by a hack ke=
yed
on a particular section name or generally for non-allocatable sections is u=
p to
them.=