Comment # 5 on bug 1180610 from Richard Biener

These symbols are an "artifact" of how LTO handles debuginfo.  One could argue
that the process of splitting the debuginfo to the separate file is broken
since it leaves those stray symbols in the main file making it technically an
invalid ELF file (I'd have to see what the extraction actually does to the
"source" ELF).  Note the artificial symbol is not needed after relocating
symbols refering to it but ld does not GC symbols (not for shlibs anyway).

I'm not sure just looking up STT_FUNC symbols is "correct".  Instead I'd
argue that WEAK symbols that fail to be resolved should be ignored.

As said, the best "fix" is probably to see whether we can produce better
non-debug ELF in the debuginfo splitting path.  Which probably means
fixing eu-strip to strip symbols refering to sections it strips
(or move them for -f).  Martin - you are the elfutils maintainer and Mark
is probably also going to help out here?

Ideally there would be a way for GCC to tell the link editor that those symbols
can be discarded after applying relocations.