GCC build failure, HEAD@158105 on native

[regress]

With your recent patch, GCC HEAD revision 158105 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 158103.

Log information for changes since the last build:
------------------------------------------------------------------------
r158105 | mkuvyrkov | 2010-04-08 01:20:36 -0700 (Thu, 08 Apr 2010) | 10 lines
Changed paths:
   M /trunk/gcc/ChangeLog
   M /trunk/gcc/testsuite/ChangeLog
   A /trunk/gcc/testsuite/gcc.dg/tree-ssa/reassoc-19.c
   M /trunk/gcc/tree-ssa-reassoc.c

	PR middle-end/40815
	* tree-ssa-reassoc.c (broken_up_substracts): Rename to plus_negates.
	(negate_value): Move code to push elements to broken_up_substracts ...
	(eliminate_plus_minus_pair): ... here.  Push operands that have no
	negative pair to plus_negates.
	(repropagate_negates, init_reassoc, fini_reassoc): Update.

	PR middle-end/40815
	* gcc.dg/tree-ssa/reassoc-19.c: New.

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

For more information, see <http://gcc.gnu.org/regtest/HEAD/>.

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/Users/regress/tbox/svn-gcc/gcc/expmed.c:181:3: warning: array subscript is above array bounds
/Users/regress/tbox/svn-gcc/gcc/expmed.c:188:3: warning: array subscript is above array bounds
/Users/regress/tbox/svn-gcc/gcc/expmed.c:204:3: warning: array subscript is above array bounds
/Users/regress/tbox/svn-gcc/gcc/expmed.c:208:3: warning: array subscript is above array bounds
/Users/regress/tbox/svn-gcc/gcc/expmed.c:212:3: warning: array subscript is above array bounds
/Users/regress/tbox/svn-gcc/gcc/expmed.c:255:8: warning: array subscript is above array bounds
/Users/regress/tbox/svn-gcc/gcc/expmed.c:270:8: warning: array subscript is above array bounds
/Users/regress/tbox/svn-gcc/gcc/expmed.c:271:8: warning: array subscript is above array bounds
/Users/regress/tbox/native/build/./prev-gcc/xgcc -B/Users/regress/tbox/native/build/./prev-gcc/ -B/Users/regress/tbox/objs/powerpc-apple-darwin9.8.0/bin/ -B/Users/regress/tbox/objs/powerpc-apple-darwin9.8.0/bin/ -B/Users/regress/tbox/objs/powerpc-apple-darwin9.8.0/lib/ -isystem /Users/regress/tbox/objs/powerpc-apple-darwin9.8.0/include -isystem /Users/regress/tbox/objs/powerpc-apple-darwin9.8.0/sys-include    -c  -g -O2 -mdynamic-no-pic -gtoggle -DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -Wold-style-definition -Wc++-compat -fno-common  -DHAVE_CONFIG_H -I. -I. -I/Users/regress/tbox/svn-gcc/gcc -I/Users/regress/tbox/svn-gcc/gcc/. -I/Users/regress/tbox/svn-gcc/gcc/../include -I./../intl -I/Users/regress/tbox/svn-gcc/gcc/../libcpp/include  -I/Users/regress/tbox/svn-gcc/gcc/../libdecnumber -I/Users/regress/tbox/svn-gcc/gcc/../libdec
 number/dpd -I../libdecnumber     /Users/regress/tbox/svn-gcc/gcc/expr.c -o expr.o
cc1: warnings being treated as errors
/Users/regress/tbox/svn-gcc/gcc/expr.c: In function 'block_move_libcall_safe_for_call_parm':
/Users/regress/tbox/svn-gcc/gcc/expr.c:1254:8: error: variable 'fn' set but not used
make[3]: *** [expr.o] Error 1
make[3]: *** Waiting for unfinished jobs....
rm gcj-dbtool.pod jcf-dump.pod jv-convert.pod gcj.pod gc-analyze.pod gfdl.pod cpp.pod gij.pod gcc.pod gcov.pod gfortran.pod fsf-funding.pod grmic.pod
make[2]: *** [all-stage2-gcc] Error 2
make[1]: *** [stage2-bubble] Error 2
make: *** [bootstrap] Error 2
+ '[' -s .bad_compare ']'
+ exit 1
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-- 
Geoffrey Keating <geoffk@apple.com> 
(via an automated GCC regression-testing script.)