[Bug c++/11249] New: Too many similar declarations cause crash in the name mangler

["ritzert at t-online dot de" <gcc-bugzilla at gcc dot gnu dot org>]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11249

           Summary: Too many similar declarations cause crash in the name
                    mangler
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ritzert@t-online.de
                CC: gcc-bugs@gcc.gnu.org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu

Generate a .cpp file with this script: 
 
for x in $(seq 1 24); do 
cat <<EOF 
template<class T_slice> 
class x_$x 
{ 
    operator T_slice*() const; 
}; 
EOF 
done 
 
When compiling with GNU C version 3.4 20030618 (experimental) I get 
Program received signal SIGSEGV, Segmentation fault. 
0x0815502b in hash_type (val=0x0) at 
/home/ritzert/gcc/HEAD/gcc/gcc/cp/mangle.c:2600 
2600      return htab_hash_pointer (TREE_PURPOSE (*((tree *) val))); 
(gdb) bt 
#0  0x0815502b in hash_type (val=0x0) at 
/home/ritzert/gcc/HEAD/gcc/gcc/cp/mangle.c:2600 
#1  0x08483bae in htab_expand (htab=0x40199600) at 
/home/ritzert/gcc/HEAD/gcc/libiberty/hashtab.c:405 
#2  0x08483d90 in htab_find_slot_with_hash (htab=0x40199600, 
element=0x401ac57c, hash=134437039, insert=INSERT) at 
/home/ritzert/gcc/HEAD/gcc/libiberty/hashtab.c:506 
#3  0x08155102 in mangle_conv_op_name_for_type (type=0x401ac57c) at 
/home/ritzert/gcc/HEAD/gcc/gcc/cp/mangle.c:2625 
#4  0x080fa974 in cp_parser_unqualified_id (parser=0x40199480, 
template_keyword_p=76, check_dependency_p=true) at 
/home/ritzert/gcc/HEAD/gcc/gcc/cp/parser.c:3168 
 
When I generate only 23 declarations, it compiles fine.