[Bug c++/23089] New: internal compiler error: in int_mode_for_mode, at stor-layout.c:251 at -O1

["flash at pobox dot com" <gcc-bugzilla at gcc dot gnu dot org>]

The session below, with the file below, gives "internal compiler error: in int_mode_for_mode, at stor-
layout.c:251".  The error only occurs at -O1 or higher.  This sounds like bug 17407, but that's 
supposedly fixed and didn't require optimization.  The file is an odd-looking Delta reduction of a much 
larger file, which was originally supposed to be valid code; but I haven't gotten the include paths set up 
properly yet.

File:
{
};
class NameOne;
{
{
    {
       {
    {
    }
    {
    }
       }
   }
      }
}
struct NameTwo::private_data {
 struct offsets {
 };
};
class NameThree : public NameFour {
     NameThree( NameOne frame,
        const char *name,
        NameFive *target,
        float min,
        float max,
        orientation direction);
};
NameThree::NameThree(NameOne frame, const char *name, NameFive *target, float minv, float maxv, 
orientation direction)
 : NameFour(frame, name, target, minv, maxv, direction)


Session:
9> /opt/gcc401chk/bin/g++ -v -O1 ../cpp/bugfiles/GCC_bugfiles/error/105107_OutlineView_min.ii
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ../configure --enable-checking --prefix=/opt/gcc401chk --enable-languages=c,c+
+
Thread model: posix
gcc version 4.0.1
 /opt/gcc401chk/libexec/gcc/i686-pc-linux-gnu/4.0.1/cc1plus -fpreprocessed ../cpp/bugfiles/
GCC_bugfiles/error/105107_OutlineView_min.ii -quiet -dumpbase 105107_OutlineView_min.ii -
mtune=pentiumpro -auxbase 105107_OutlineView_min -O1 -version -o /tmp/cctwDCac.s
GNU C++ version 4.0.1 (i686-pc-linux-gnu)
        compiled by GNU C version 3.3.4 (pre 3.3.5 20040809).
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
?
../cpp/bugfiles/GCC_bugfiles/error/105107_OutlineView_min.ii:28: internal compiler error: in 
int_mode_for_mode, at stor-layout.c:251
Please submit a full bug report,
?

-- 
           Summary: internal compiler error: in int_mode_for_mode, at stor-
                    layout.c:251 at -O1
           Product: gcc
           Version: 4.0.1
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: flash at pobox dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23089