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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/56716] during gcc 4.8.0 build on Cygwin:  bid128_fma.c:4460:1: internal compiler error: Segmentation fault
Date: Thu, 25 Apr 2013 08:06:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56716

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |WAITING

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> 2013-04-25 08:06:47 UTC ---
(In reply to comment #4)
> (In reply to comment #3)
> > Author: rguenth
> > Date: Wed Mar 27 15:10:50 2013
> > New Revision: 197165
> > 
> > URL: http://gcc.gnu.org/viewcvs?rev=197165&root=gcc&view=rev
> > Log:
> > 2013-03-27  Richard Biener  <rguenther@suse.de>
> > 
> >     PR tree-optimization/56716
> >     * tree-ssa-structalias.c (perform_var_substitution): Adjust
> >     dumping for ref nodes.
> > 
> > Modified:
> >     trunk/gcc/ChangeLog
> >     trunk/gcc/tree-ssa-structalias.c
> > 
> > Fixed the issue on trunk.  Back to analysis.
> 
> I get the same error, and merging revision 197165 from trunk into my
> working-directory for gcc-4_8-branch revision 198253 did not fix the error on
> my system.
> 
> This error occured during one of the stages while building gcc, revision
> 198065, checked out from svn://gcc.gnu.org/svn/gcc/branches/gcc-4_8-branch for
> MinGW32, Windows 7 Pro 64-bit SP1.
> The error also occurs with revisions 198027 and 198253 -- that is, the error
> has been occuring with revisions for at least these past 7 days.
> 
> The error persists after I merged revision 197165 from trunk into my
> working-directory for gcc-4_8-branch revision 198253.

That's expected as the issue I fixed on trunk was not present on the 4.8
branch.  Which is why I didn't close this bug.  But as I cannot reproduce
it I rely on others for investigation.

Can you please provide a backtrace from the crash?