http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53438

--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-05-28 
14:34:30 UTC ---
(In reply to comment #14)
> > Anyway, would it be possible to have a testcase for the gcc testsuite too?
> 
> I've been trying, but so far haven't been able to come up with anything other
> than the enormous "reduced" testcase.  Seems it may require a combination of
> templates and inlining to get the bitfield access in the right form to exhibit
> the bug, but I haven't figured it out yet.  Ideas welcome.

Ok, we now have a testcase in the testsuite from the dup PR:
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=187931
(and r187932 for 4.7).

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