[Bug ld/27590] `.gnu.debuglto_.debug_macro' referenced in section `.gnu.debuglto_.debug_macro' of X defined in discarded section

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=27590

--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
I think this is a GCC bug:

[hjl@gnu-cfl-2 pr27590]$ cat bad.s
        .section        .gnu.debuglto_.debug_macro,"e",@progbits
.Ldebug_macro0:
        .long   .Ldebug_macro2
        .section        .gnu.debuglto_.debug_macro,"eG",@progbits,wm4,comdat
.Ldebug_macro2:
        .value  0x4
[hjl@gnu-cfl-2 pr27590]$ gcc -c bad.s
[hjl@gnu-cfl-2 pr27590]$ ld -r bad.o bad.o
`.gnu.debuglto_.debug_macro' referenced in section `.gnu.debuglto_.debug_macro'
of bad.o: defined in discarded section `.gnu.debuglto_.debug_macro[wm4]' of
bad.o
[hjl@gnu-cfl-2 pr27590]$ ld.gold -r bad.o bad.o
[hjl@gnu-cfl-2 pr27590]$ readelf -r a.out 

Relocation section '.rela.gnu.debuglto_.debug_macro' at offset 0x78 contains 1
entry:
  Offset          Info           Type           Sym. Value    Sym. Name +
Addend
000000000000  00020000000a R_X86_64_32       0000000000000000
.gnu.debuglto_.de[...] + 0
[hjl@gnu-cfl-2 pr27590]$ readelf -x .gnu.debuglto_.debug_macro a.out  

Hex dump of section '.gnu.debuglto_.debug_macro':
 NOTE: This section has relocations against it, but these have NOT been applied
to this dump.
  0x00000000 00000000 00000000                   ........


Hex dump of section '.gnu.debuglto_.debug_macro':
  0x00000000 0400                                ..

[hjl@gnu-cfl-2 pr27590]$

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