NEW GCC build failure, HEAD@176720 on native

[GCC regression tester]

With your recent patch, GCC HEAD revision 176720 had problems on:
native: build (NEW build failure)
Attached is build output for those targets.
The previous build was of revision 176718.

Log information for changes since the last build:
------------------------------------------------------------------------
r176720 | sandra | 2011-07-24 16:22:41 -0700 (Sun, 24 Jul 2011) | 11 lines
Changed paths:
   M /trunk/gcc/ChangeLog
   M /trunk/gcc/collect2.c
   M /trunk/gcc/configure
   M /trunk/gcc/configure.ac

2011-07-24  Sandra Loosemore  <sandra@codesourcery.com>

	gcc/
	* configure.ac (demangler_in_ld): Default to yes.
	* configure: Regenerated.
	* collect2.c (main): When HAVE_LD_DEMANGLE is defined, don't
	mess with COLLECT_NO_DEMANGLE, and just pass --demangle and
	--no-demangle options straight through to ld.  When
	HAVE_LD_DEMANGLE is not defined, set COLLECT_NO_DEMANGLE in a
	way that has the intended effect on Windows.

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

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

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/home/regress/tbox/native/build/./prev-gcc/g++ -B/home/regress/tbox/native/build/./prev-gcc/ -B/home/regress/tbox/objs/i686-pc-linux-gnu/bin/ -nostdinc++ -B/home/regress/tbox/native/build/prev-i686-pc-linux-gnu/libstdc++-v3/src/.libs -B/home/regress/tbox/native/build/prev-i686-pc-linux-gnu/libstdc++-v3/libsupc++/.libs -I/home/regress/tbox/native/build/prev-i686-pc-linux-gnu/libstdc++-v3/include/i686-pc-linux-gnu -I/home/regress/tbox/native/build/prev-i686-pc-linux-gnu/libstdc++-v3/include -I/home/regress/tbox/svn-gcc/libstdc++-v3/libsupc++ -L/home/regress/tbox/native/build/prev-i686-pc-linux-gnu/libstdc++-v3/src/.libs -L/home/regress/tbox/native/build/prev-i686-pc-linux-gnu/libstdc++-v3/libsupc++/.libs -c  -g -O2 -gtoggle -DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common  -DHAVE_CONFIG_H -I. -I. -I/home/regress/tbox/svn-gcc/gcc -I/home/regress/tbox/svn-gcc/gcc/.!
  -I/home/regress/tbox/svn-gcc/gcc/../include -I/home/regress/tbox/svn-gcc/gcc/../libcpp/include  -I/home/regress/tbox/svn-gcc/gcc/../libdecnumber -I/home/regress/tbox/svn-gcc/gcc/../libdecnumber/bid -I../libdecnumber    /home/regress/tbox/svn-gcc/gcc/collect2-aix.c -o collect2-aix.o
/home/regress/tbox/native/build/./prev-gcc/g++ -B/home/regress/tbox/native/build/./prev-gcc/ -B/home/regress/tbox/objs/i686-pc-linux-gnu/bin/ -nostdinc++ -B/home/regress/tbox/native/build/prev-i686-pc-linux-gnu/libstdc++-v3/src/.libs -B/home/regress/tbox/native/build/prev-i686-pc-linux-gnu/libstdc++-v3/libsupc++/.libs -I/home/regress/tbox/native/build/prev-i686-pc-linux-gnu/libstdc++-v3/include/i686-pc-linux-gnu -I/home/regress/tbox/native/build/prev-i686-pc-linux-gnu/libstdc++-v3/include -I/home/regress/tbox/svn-gcc/libstdc++-v3/libsupc++ -L/home/regress/tbox/native/build/prev-i686-pc-linux-gnu/libstdc++-v3/src/.libs -L/home/regress/tbox/native/build/prev-i686-pc-linux-gnu/libstdc++-v3/libsupc++/.libs -c  -g -O2 -gtoggle -DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common  -DHAVE_CONFIG_H -I. -I. -I/home/regress/tbox/svn-gcc/gcc -I/home/regress/tbox/svn-gcc/gcc/.!
  -I/home/regress/tbox/svn-gcc/gcc/../include -I/home/regress/tbox/svn-gcc/gcc/../libcpp/include  -I/home/regress/tbox/svn-gcc/gcc/../libdecnumber -I/home/regress/tbox/svn-gcc/gcc/../libdecnumber/bid -I../libdecnumber    /home/regress/tbox/svn-gcc/gcc/tlink.c -o tlink.o
(SHLIB_LINK='/home/regress/tbox/native/build/./gcc/xgcc -B/home/regress/tbox/native/build/./gcc/ -O2  -g -O2 -DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition  -isystem ./include  -fPIC -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector  -shared -nodefaultlibs -Wl,--soname=@shlib_base_name@.so.1 -Wl,--version-script=@shlib_map_file@ -o @multilib_dir@/@shlib_base_name@.so.1.tmp @multilib_flags@ @shlib_objs@ -lc && rm -f @multilib_dir@/@shlib_base_name@.so && if [ -f @multilib_dir@/@shlib_base_name@.so.1 ]; then mv -f @multilib_dir@/@shlib_base_name@.so.1 @multilib_dir@/@shlib_base_name@.so.1.backup; else true; fi && mv @multilib_dir@/@shlib_base_name@.so.1.tmp @multilib_dir@/@shlib_base_name@.so.1 && ln -s @shlib_base_name@.so.1 @multilib_dir@/@shlib_base_name@.so'; \
	/home/regress/tbox/native/build/./prev-gcc/g++ -B/home/regress/tbox/native/build/./prev-gcc/ -B/home/regress/tbox/objs/i686-pc-linux-gnu/bin/ -nostdinc++ -B/home/regress/tbox/native/build/prev-i686-pc-linux-gnu/libstdc++-v3/src/.libs -B/home/regress/tbox/native/build/prev-i686-pc-linux-gnu/libstdc++-v3/libsupc++/.libs -I/home/regress/tbox/native/build/prev-i686-pc-linux-gnu/libstdc++-v3/include/i686-pc-linux-gnu -I/home/regress/tbox/native/build/prev-i686-pc-linux-gnu/libstdc++-v3/include -I/home/regress/tbox/svn-gcc/libstdc++-v3/libsupc++ -L/home/regress/tbox/native/build/prev-i686-pc-linux-gnu/libstdc++-v3/src/.libs -L/home/regress/tbox/native/build/prev-i686-pc-linux-gnu/libstdc++-v3/libsupc++/.libs  -g -O2 -gtoggle -DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common  -DHAVE_CONFIG_H -I. -I. -I/home/regress/tbox/svn-gcc/gcc -I/home/regress/tbox/svn-gcc/gcc/. -!
 I/home/regress/tbox/svn-gcc/gcc/../include -I/home/regress/tbox/svn-gcc/gcc/../libcpp/include  -I/home/regress/tbox/svn-gcc/gcc/../libdecnumber -I/home/regress/tbox/svn-gcc/gcc/../libdecnumber/bid -I../libdecnumber    \
  -DSTANDARD_STARTFILE_PREFIX=\"../../../\" -DSTANDARD_EXEC_PREFIX=\"/home/regress/tbox/objs/lib/gcc/\" -DSTANDARD_LIBEXEC_PREFIX=\"/home/regress/tbox/objs/libexec/gcc/\" -DDEFAULT_TARGET_VERSION=\"4.7.0\" -DDEFAULT_TARGET_MACHINE=\"i686-pc-linux-gnu\" -DSTANDARD_BINDIR_PREFIX=\"/home/regress/tbox/objs/bin/\" -DTOOLDIR_BASE_PREFIX=\"../../../../\"  `test "X${SHLIB_LINK}" = "X" || test "yes" != "yes" || echo "-DENABLE_SHARED_LIBGCC"` -DCONFIGURE_SPECS="\"\"" \
  -c /home/regress/tbox/svn-gcc/gcc/gccspec.c -o gccspec.o)
/home/regress/tbox/svn-gcc/gcc/collect2.c:182:20: error: 'demangle_flag' defined but not used [-Werror=unused-variable]
cc1plus: all warnings being treated as errors

make[3]: *** [collect2.o] Error 1
make[3]: *** Waiting for unfinished jobs....
rm gcj-dbtool.pod jcf-dump.pod jv-convert.pod grmic.pod gcov.pod gcj.pod gc-analyze.pod gfdl.pod cpp.pod gij.pod gfortran.pod fsf-funding.pod gcc.pod
make[3]: Leaving directory `/home/regress/tbox/native/build/gcc'
make[2]: *** [all-stage2-gcc] Error 2
make[2]: Leaving directory `/home/regress/tbox/native/build'
make[1]: *** [stage2-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.)