GCC build failure, HEAD@196612 on native

[GCC regression tester <regress at geoffk dot org>]

With your recent patch, GCC HEAD revision 196612 had problems on:
native: build (about the same as the previous build)
Attached is build output for those targets.
The previous build was of revision 196611.

Log information for changes since the last build:
------------------------------------------------------------------------
r196612 | hubicka | 2013-03-12 05:13:33 -0700 (Tue, 12 Mar 2013) | 9 lines
Changed paths:
   M /trunk/gcc/ChangeLog
   M /trunk/gcc/emit-rtl.c
   M /trunk/gcc/rtl.c
   M /trunk/gcc/testsuite/ChangeLog
   A /trunk/gcc/testsuite/gcc.c-torture/compile/pr56571.c
   M /trunk/gcc/valtrack.c

	PR middle-end/56571
	* valtrack.c (cleanup_auto_inc_dec): Unshare clobbers originating
	from pseudos.
	* emit-rtl.c (verify_rtx_sharing): Likewise.
	(copy_insn_1): Likewise.
	* rtl.c (copy_rtx): Likewise.
	PR middle-end/56571
	* gcc.c-torture/compile/pr56571.c: New testcase.

------------------------------------------------------------------------

For more information, see <http://glutton.geoffk.org/HEAD/>.

Attachment: native-log.txt
Description: Text document

-- 
Geoffrey Keating <geoffk@geoffk.org> 
(via an automated GCC regression-testing script.)