[gold patch] PR 22868: Fix case where IR file provides symbol visibility but replacement file does not

[Nick Clifton]

Hi Cary,

> Is this OK for the 2.30 branch?

Definitely - please commit.

Cheers
  Nick


>> gold/
>>         PR gold/22868
>>         * plugin.cc (Sized_pluginobj::do_add_symbols): Use a real section
>>         index instead of SHN_ABS for defined symbols.
>>         * testsuite/Makefile.am (plugin_pr22868): New test case.
>>         * testsuite/Makefile.in: Regenerate
>>         * testsuite/plugin_pr22868.sh: New test script.
>>         * testsuite/plugin_pr22868_a.c: New source file.
>>         * testsuite/plugin_pr22868_b.c: New source file.
>