https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115066
--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #1)
> Looking at the source code, I wonder if this would fix it:
> ...
> diff --git a/gcc/dwarf2out.cc b/gcc/dwarf2out.cc
> index eedb13bb069..045858bf638 100644
> --- a/gcc/dwarf2out.cc
> +++ b/gcc/dwarf2out.cc
> @@ -29045,7 +29045,7 @@ output_macinfo_op (macinfo_entry *ref)
> && !DWARF2_INDIRECT_STRING_SUPPORT_MISSING_ON_TARGET
> && (debug_str_section->common.flags & SECTION_MERGE) != 0)
> {
> - if (dwarf_split_debug_info && dwarf_version >= 5)
> + if (dwarf_split_debug_info && (!dwarf_strict || dwarf_version >= 5))
> ref->code = ref->code == DW_MACINFO_define
> ? DW_MACRO_define_strx : DW_MACRO_undef_strx;
> else
> ...
With that change I get:
...
.Ldebug_macro0:
.value 0x4 # DWARF macro version number
.byte 0x2 # Flags: 32-bit, lineptr present
.long .Lskeleton_debug_line0
.byte 0x3 # Start new file
.uleb128 0 # Included from line number 0
.uleb128 0x1 # file /data/vries/hello.c
.byte 0xb # Define macro strx
.uleb128 0 # At line number 0
.uleb128 0x17b # The macro: "__STDC__ 1"
...
