[patch] Fix handling of common symbols with plugins

[Alan Modra]

On Thu, Sep 18, 2014 at 10:09:06AM -0700, Cary Coutant wrote:
> >> 2014-09-18  Rafael Ávila de Espíndola <rafael.espindola@gmail.com>
> >>
> >>         * testsuite/Makefile.am (plugin_test_10): New test.
> >>         * testsuite/Makefile.in: Regenerate
> >>         * testsuite/plugin_common_test_2.c (c1): Align to 8.
> >>         * testsuite/plugin_test_10.sh: New file.
> 
> This is OK. Thanks!

Fails on x86_64 when using mainline gcc.  c1 is aligned (value = 8) in
the relocatable object file
    20: 0000000000000008     4 OBJECT  GLOBAL DEFAULT  COM c1

plugin_common_test_1.syms:
    23: 0000000000000004     4 OBJECT  GLOBAL DEFAULT  COM c1

Final object file:
    39: 0000000000401b7c     4 OBJECT  GLOBAL DEFAULT   25 c1
and .bss only has an alignment of 4.

-- 
Alan Modra
Australia Development Lab, IBM