[Bug tree-optimization/50723] New: [4.7 regression] internal compiler error: verify_ssa failed

["jojelino at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50723

             Bug #: 50723
           Summary: [4.7 regression] internal compiler error: verify_ssa
                    failed
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: jojelino@gmail.com
              Host: i686-pc-cygwin
            Target: i686-pc-cygwin
             Build: i686-pc-cygwin


Created attachment 25492
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25492
preprocessed source

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/i686-pc-cygwin/4.7.0/lto-wrapper.exe
Target: i686-pc-cygwin
Configured with: ./configure --config-cache --prefix=/usr
--disable-win32-registry --enable-threads=win32
--enable-languages=c,c++,fortran,lto --with-win32-nlsapi=unicode --enable-tls
--disable-bootstrap --enable-shared --disable-sjlj-exceptions --enable-gomp
--enable-cloog-backend=isl : (reconfigured)  : (reconfigured) ./configure
--config-cache --prefix=/usr --disable-win32-registry --enable-threads=win32
--with-win32-nlsapi=unicode --enable-tls --disable-bootstrap --enable-shared
--disable-sjlj-exceptions --enable-gomp --enable-cloog-backend=isl
--enable-languages=c,c++,fortran,lto --no-create --no-recursion
Thread model: win32
gcc version 4.7.0 20111011 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-D' '__MINGW32__' '-D' '__MSVCRT__' '-D' 'WIN32' '-D'
'_WIN32' '-D' '__WIN32' '-D' '__WIN32__' '-U' '__CYGWIN__' '-U' 'unix' '-U'
'__unix__' '-U' '__unix' '-U' '__CYGWIN32__' '-B'
'/usr/i686-pc-mingw32/sys-root/mingw/lib/' '-c' '-O4' '-mstackrealign'
'-march=core2' '-g' '-mfpmath=sse' '-Wall' '-fomit-frame-pointer' '-I'
'../../../.././winsup/mingw/mingwex' '-I' '../../../.././winsup/mingw' '-I'
'../../../.././winsup/mingw/include' '-nostdinc' '-iwithprefixbefore' 'include'
'-I' '../../../.././winsup/mingw/../w32api/include' '-v' '-save-temps' '-o'
'wcrtomb.o'
 /usr/libexec/gcc/i686-pc-cygwin/4.7.0/cc1.exe -E -quiet -nostdinc -v -I
../../../.././winsup/mingw/mingwex -I ../../../.././winsup/mingw -I
../../../.././winsup/mingw/include -I
../../../.././winsup/mingw/../w32api/include -D__CYGWIN32__ -D__CYGWIN__ -Dunix
-D__unix__ -D__unix -D __MINGW32__ -D __MSVCRT__ -D WIN32 -D _WIN32 -D __WIN32
-D __WIN32__ -U __CYGWIN__ -U unix -U __unix__ -U __unix -U __CYGWIN32__
-iwithprefixbefore include ../../../.././winsup/mingw/mingwex/wcrtomb.c
-mstackrealign -march=core2 -mfpmath=sse -Wall -fomit-frame-pointer -g
-fworking-directory -O4 -fpch-preprocess -o wcrtomb.i
#include "..." search starts here:
#include <...> search starts here:
 ../../../.././winsup/mingw/mingwex
 ../../../.././winsup/mingw
 ../../../.././winsup/mingw/include
 ../../../.././winsup/mingw/../w32api/include
 /usr/lib/gcc/i686-pc-cygwin/4.7.0/include
End of search list.
COLLECT_GCC_OPTIONS='-D' '__MINGW32__' '-D' '__MSVCRT__' '-D' 'WIN32' '-D'
'_WIN32' '-D' '__WIN32' '-D' '__WIN32__' '-U' '__CYGWIN__' '-U' 'unix' '-U'
'__unix__' '-U' '__unix' '-U' '__CYGWIN32__' '-B'
'/usr/i686-pc-mingw32/sys-root/mingw/lib/' '-c' '-O4' '-mstackrealign'
'-march=core2' '-g' '-mfpmath=sse' '-Wall' '-fomit-frame-pointer' '-I'
'../../../.././winsup/mingw/mingwex' '-I' '../../../.././winsup/mingw' '-I'
'../../../.././winsup/mingw/include' '-nostdinc' '-iwithprefixbefore' 'include'
'-I' '../../../.././winsup/mingw/../w32api/include' '-v' '-save-temps' '-o'
'wcrtomb.o'
 /usr/libexec/gcc/i686-pc-cygwin/4.7.0/cc1.exe -fpreprocessed wcrtomb.i -quiet
-dumpbase wcrtomb.c -mstackrealign -march=core2 -mfpmath=sse -auxbase-strip
wcrtomb.o -g -O4 -Wall -version -fomit-frame-pointer -o wcrtomb.s
GNU C (GCC) version 4.7.0 20111011 (experimental) (i686-pc-cygwin)
        compiled by GNU C version 4.7.0 20111006 (experimental), GMP version
5.0.0, MPFR version 3.0.1-p4, MPC version 0.8.1
warning: MPFR header version 3.0.1-p4 differs from library version 3.2.0-dev.
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU C (GCC) version 4.7.0 20111011 (experimental) (i686-pc-cygwin)
        compiled by GNU C version 4.7.0 20111006 (experimental), GMP version
5.0.0, MPFR version 3.0.1-p4, MPC version 0.8.1
warning: MPFR header version 3.0.1-p4 differs from library version 3.2.0-dev.
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: ff55cda5b7745a2de214166d277da77c
../../../.././winsup/mingw/mingwex/wcrtomb.c: In function '__wcrtomb_cp':
../../../.././winsup/mingw/mingwex/wcrtomb.c:94:1: error: definition in block 4
follows the use
for SSA_NAME: D.18798_14 in statement:
# .MEM_19 = VDEF <.MEM_18(D)>
size_16 = __wcrtomb_cp.part.0 (dst_8(D), D.18798_14, cp_2(D), mb_max_10(D));
../../../.././winsup/mingw/mingwex/wcrtomb.c:94:1: internal compiler error:
verify_ssa failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.