GCC build failure, HEAD@193943 on native

[GCC regression tester]

With your recent patch, GCC HEAD revision 193943 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 193942.

Log information for changes since the last build:
------------------------------------------------------------------------
r193943 | rearnsha | 2012-11-29 09:51:40 -0800 (Thu, 29 Nov 2012) | 9 lines
Changed paths:
   M /trunk/gcc/ChangeLog
   M /trunk/gcc/config/arm/neon.md
   M /trunk/gcc/testsuite/ChangeLog
   A /trunk/gcc/testsuite/gcc.target/arm/pr55073.C

	PR target/55073
	* arm/neon.md (neon_vtrn<mode>_internal): Split into expand
	and insn patterns.  Re-order insn arguments to tie inputs to
	outputs.
	(neon_vzip<mode>_internal): Likewise.
	(neon_vuzp<mode>_internal): Likewise.

	* gcc.target/arm/pr55073.C: New test.

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

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

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libtool: compile: unrecognized option `-D_GNU_SOURCE'
libtool: compile: Try `libtool --help' for more information.
make[4]: *** [interception_linux.lo] Error 1
make[4]: *** Waiting for unfinished jobs....
libtool: compile: unrecognized option `-D_GNU_SOURCE'
libtool: compile: Try `libtool --help' for more information.
libtool: compile: unrecognized option `-D_GNU_SOURCE'
make[4]: *** [interception_win.lo] Error 1
libtool: compile: Try `libtool --help' for more information.
make[4]: *** [interception_mac.lo] Error 1
make[4]: Leaving directory `/home/regress/tbox/native/build/i686-pc-linux-gnu/libsanitizer/interception'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory `/home/regress/tbox/native/build/i686-pc-linux-gnu/libsanitizer'
make[2]: *** [all-stage1-target-libsanitizer] Error 2
make[2]: Leaving directory `/home/regress/tbox/native/build'
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory `/home/regress/tbox/native/build'
make: *** [bootstrap] Error 2
+ '[' -s .bad_compare ']'
+ exit 1
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-- 
Geoffrey Keating <geoffk@geoffk.org> 
(via an automated GCC regression-testing script.)