[Bug ld/17112] [regression] binutils trunk ld/LTO 11 test fails when built using GCC 4.9

[amodra at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17112

Alan Modra <amodra at gmail dot com> changed:

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                 CC|                            |amodra at gmail dot com

--- Comment #2 from Alan Modra <amodra at gmail dot com> ---
I was looking at this last week.  It's basically a testsuite issue.  The test
puts all the objects into tmpdir/liblto-11.a, expecting that the startup file
reference to main will pull them out of the archive as it would normally. 
However, the objects are not built with -ffat-lto-objects so there are no
normal symbols, except things like __gnu_lto_slim.  These useless symbols are
the ones put into the archive index, and of course nothing references them so
no objects are extracted by the linker.

I think what needs to happen is the archive be built with ar --plugin.

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