elfutils's eu-elflint isn't happy

[rossburton]

elfutils has an elflint tool. Whilst trying to figure out why RPM can't find the SONAME in libraries linked with mold, I ran this:

$ eu-elflint glib-mold/image/usr/lib/libgthread-2.0.so
section [ 8] '.gnu.hash': symbol 1 referenced in chain for bucket 0 is undefined
section [ 8] '.gnu.hash': symbol 5 referenced in chain for bucket 1 is undefined
section [ 8] '.gnu.hash': symbol 6 referenced in chain for bucket 1 is undefined
section [12] '.rodata.str': merge flag set but entry size is zero
section [28] '.symtab': symbol 45: st_value out of bounds
section [28] '.symtab': _DYNAMIC symbol size 0 does not match dynamic segment size 576
section [28] '.symtab': symbol 58: st_value out of bounds
section [29] '.comment': merge flag set but entry size is zero
section [34] '.debug_line_str' has wrong flags: expected none, is MERGE|STRINGS
section [34] '.debug_line_str': merge flag set but entry size is zero
section [37] '.debug_str': merge flag set but entry size is zero

[rui314]

This one is a real issue. I'll fix it soon.

section [ 8] '.gnu.hash': symbol 1 referenced in chain for bucket 0 is undefined
section [ 8] '.gnu.hash': symbol 5 referenced in chain for bucket 1 is undefined
section [ 8] '.gnu.hash': symbol 6 referenced in chain for bucket 1 is undefined

The following errors are harmless

section [12] '.rodata.str': merge flag set but entry size is zero
section [28] '.symtab': symbol 45: st_value out of bounds

This error for _DYNAMIC is "good to have". I'll file an issue to manage it separately.

section [28] '.symtab': _DYNAMIC symbol size 0 does not match dynamic segment size 576

The following errors are harmless.

section [28] '.symtab': symbol 58: st_value out of bounds
section [29] '.comment': merge flag set but entry size is zero
section [34] '.debug_line_str' has wrong flags: expected none, is MERGE|STRINGS
section [34] '.debug_line_str': merge flag set but entry size is zero
section [37] '.debug_str': merge flag set but entry size is zero

[rui314]

I committed a few changes to make the elflint tool happier. mold's output isn't still elflint-clean, but I think we don't need to make any more changes to completely satisfy it, as it's not an authoritative tool or anything. The tool complains about even GNU ld's outputs.