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From: "hubicka at ucw dot cz" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/55792] [4.8 Regression] Bad memory access with profiledbootstrap and LTO
Date: Fri, 11 Jan 2013 17:37:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55792

--- Comment #33 from Jan Hubicka <hubicka at ucw dot cz> 2013-01-11 17:36:48 UTC ---
> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55792
> 
> --- Comment #32 from H.J. Lu <hjl.tools at gmail dot com> 2013-01-10 19:36:08 UTC ---
> (In reply to comment #30)
> > LTO profiled-bootstrap revals:
> > 
> > /space/rguenther/src/svn/trunk/gcc/reginfo.c: In function 'reg_scan':
> > /space/rguenther/src/svn/trunk/gcc/reginfo.c:1015:0: error: location references
> > block not in block tree
> >  reg_scan (rtx f, unsigned int nregs ATTRIBUTE_UNUSED)
> >  ^
> > "ee"
> > fmt_351 = "ee";
> > 
> > /space/rguenther/src/svn/trunk/gcc/reginfo.c:1015:0: internal compiler error:
> > verify_gimple failed
> > 
> > this is a &STRING_CST node.  Needs to be tracked down ... more IPA stuff needs
> > to use copy_tree_without_location.
> 
> I think this BLOCK comes from LTO streamer.
I guess we could add assert to lto streamer to not read any local blocks during
WPA.  I will try that.

Honza
> 
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