[Bug other/12373] New: ICE when generating RTX on valid code

["tm at kloo dot net" <gcc-bugzilla@gcc.gnu.org>]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12373

           Summary: ICE when generating RTX on valid code
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: other
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tm at kloo dot net
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i386-linux
  GCC host triplet: i386-linux
GCC target triplet: sh-elf

When quadrics.i from stress-1.17 is compiled with the options -O2 -m4, the
following error occurs:

Program received signal SIGSEGV, Segmentation fault.
0x0807ad35 in tagged_types_tu_compatible_p (t1=0x401deec4, t2=0x4016ce58,
flags=0) at ../../gcc/gcc/c-typeck.c:674
(xxgdb) 

Here's a backtrace:

(xxgdb) bt
#0  0x0807ad35 in tagged_types_tu_compatible_p (t1=0x401deec4, t2=0x4016ce58,
flags=0) at ../../gcc/gcc/c-typeck.c:674
#1  0x0807aa5a in comptypes (type1=0x401deec4, type2=0x4016ce58, flags=0) at
../../gcc/gcc/c-typeck.c:569
#2  0x0807b7f4 in type_lists_compatible_p (args1=0x401e4028, args2=0x401760a0,
flags=0) at ../../gcc/gcc/c-typeck.c:896
#3  0x0807b64b in function_types_compatible_p (f1=0x401e31b0, f2=0x401a22f4,
flags=0) at ../../gcc/gcc/c-typeck.c:855
#4  0x0807a787 in comptypes (type1=0x401e31b0, type2=0x401a22f4, flags=0) at
../../gcc/gcc/c-typeck.c:519
#5  0x08069d6c in duplicate_decls (newdecl=0x401e321c, olddecl=0x401a2360,
different_binding_level=0, different_tu=0) at ../../gcc/gcc/c-decl.c:776
#6  0x0806ca4d in pushdecl (x=0x401e321c) at ../../gcc/gcc/c-decl.c:1687
#7  0x0806e6ce in start_decl (declarator=0x401dd1f8, declspecs=0x401e1eec,
initialized=0, attributes=0x0) at ../../gcc/gcc/c-decl.c:2672
#8  0x0804cb70 in yyparse () at c-parse.y:1331
#9  0x0804fdeb in c_parse_file () at c-parse.y:3022
#10 0x080a5ad5 in c_common_parse_file (set_yydebug=0) at
../../gcc/gcc/c-opts.c:1214
#11 0x082d883a in compile_file () at ../../gcc/gcc/toplev.c:1789
#12 0x082dc8ab in do_compile () at ../../gcc/gcc/toplev.c:4479
#13 0x082dc932 in toplev_main (argc=4, argv=0xbffff934) at
../../gcc/gcc/toplev.c:4519
#14 0x4003ab5c in __libc_start_main (main=0x80bfa2c <main>, argc=4,
ubp_av=0xbffff934, init=0x80494c4 <_init>, fini=0x83a99a0 <_fini>,
rtld_fini=0x4000d634 <_dl_fini>, stack_end=0xbffff92c) at
../sysdeps/generic/libc-start.c:129
(xxgdb)