[Bug middle-end/32656] New: [4.3 regression] m32c: ICE in smallest_mode_for_size, at stor-layout.c:220

["rask at sygehus dot dk" <gcc-bugzilla at gcc dot gnu dot org>]

I get this failure building libstdc++:
/home/rask/build/gcc-m32c-unknown-elf/m32c-unknown-elf/m32cm/libstdc++-v3/include/ext/bitmap_allocator.h:
In member function 'void
__gnu_cxx::bitmap_allocator<_Tp>::_M_deallocate_single_object(_Tp*) [with _Tp =
wchar_t]':
/home/rask/build/gcc-m32c-unknown-elf/m32c-unknown-elf/m32cm/libstdc++-v3/include/ext/bitmap_allocator.h:1027:
internal compiler error: in smallest_mode_for_size, at stor-layout.c:220

Can be reproduced with this command line and the attached preprocessed source:
./xgcc -B./ -O2 -mcpu=m32cm ~/bitmap-allocator.cc -S -o /dev/null

These are the flags I configured gcc with:

--target m32c-unknown-elf --with-newlib --enable-sim --disable-gdb
--disable-nls --enable-languages=c,c++ --enable-cxx-flags=-O2


-- 
           Summary: [4.3 regression] m32c: ICE in smallest_mode_for_size, at
                    stor-layout.c:220
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rask at sygehus dot dk
 GCC build triplet: x86_64-unknown-linux-gnu
  GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: m32c-unknown-elf


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32656