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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug default/27588] dwz: libxul.so: loclistptr attribute, yet no
 .debug_loc section
Date: Tue, 16 Mar 2021 10:49:59 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27588

Tom de Vries <vries at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |NOTABUG
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #4 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Martin Liska from comment #2)
> All right, so it's likely nasm issue, there's reduced test-case:
>=20
> $ cat cdef.asm
> %define ARCH_X86_64 1
> %ifndef public_prefix
> %endif
> %define WIN64  0
> %if WIN64 ; Windows x64 ;=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D
>     %if vzeroupper_required
>     %endif
> %endif
> %macro BRANCH_INSTR 0-*
> %endmacro
> %if ARCH_X86_64
> %macro DUP4 1-*
> %endmacro
>     ret
> %endif ; ARCH_X86_64
>=20
> $ cat a.c
> int main(int argc, char **argv)
> {
>   return 0;
> }
>=20
> $ nasm -o cdef.o -f elf64 -F dwarf cdef.asm && gcc a.c -O2 -g -shared cde=
f.o
> -o x.so && dwz x.so
>=20
> Apparently, cdef.o contains the section you're seeking for:
>=20
> $ readelf -SW cdef.o | grep debug_loc
>   [11] .debug_loc        PROGBITS        0000000000000000 0005c0 000000 0=
0=20=20
> 0   0  1
>=20

Yes, the section is there, but empty, so indeed an asm issue.

This ( https://bugzilla.nasm.us/show_bug.cgi?id=3D3392631 ) looks related.

Marking this resolved-notabug.

--=20
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