[Bug tree-optimization/20623] New: ICE: fold check: original tree changed by fold with --enable-checking=fold

["micis at gmx dot de" <gcc-bugzilla at gcc dot gnu dot org>]

I built gcc from the actual snapshot (gcc-4.1-20050320) with --enable-
checking=fold and run make check.

I got ICEs "fold check: original tree changed by fold" on 28 different files

g++.dg/inherit/ptrmem2.C:23: internal compiler error: fold check: original tree 
changed by fold
g++.dg/parse/defarg5.C:14: internal compiler error: fold check: original tree 
changed by fold
g++.dg/template/ctor1.C:16: internal compiler error: fold check: original tree 
changed by fold
g++.old-deja/g++.ext/anon3.C:26: internal compiler error: fold check: original 
tree changed by fold
g++.old-deja/g++.jason/bool4.C:10: internal compiler error: fold check: 
original tree changed by fold
g++.old-deja/g++.mike/bool2.C:47: internal compiler error: fold check: original 
tree changed by fold
g++.old-deja/g++.mike/pmf8.C:27: internal compiler error: fold check: original 
tree changed by fold
gcc.c-torture/compile/20020701-1.c:33: internal compiler error: fold check: 
original tree changed by fold
gcc.c-torture/execute/builtins/memmove-2.c:23: internal compiler error: fold 
check: original tree changed by fold
gcc.c-torture/execute/builtins/strcat.c:26: internal compiler error: fold 
check: original tree changed by fold
gcc.c-torture/execute/builtins/strncat.c:23: internal compiler error: fold 
check: original tree changed by fold
gcc.c-torture/execute/builtins/strncpy.c:43: internal compiler error: fold 
check: original tree changed by fold
gcc.c-torture/execute/builtins/strstr-asm.c:22: internal compiler error: fold 
check: original tree changed by fold
gcc.c-torture/execute/builtins/strstr-asm.c:36: internal compiler error: fold 
check: original tree changed by fold
gcc.c-torture/execute/builtins/strstr.c:16: internal compiler error: fold 
check: original tree changed by fold
gcc.c-torture/execute/memcpy-bi.c:30: internal compiler error: fold check: 
original tree changed by fold
gcc.c-torture/execute/string-opt-18.c:39: internal compiler error: fold check: 
original tree changed by fold
gcc.dg/builtins-10.c:27: internal compiler error: fold check: original tree 
changed by fold
gcc.dg/builtins-2.c:35: internal compiler error: fold check: original tree 
changed by fold
gcc.dg/builtins-21.c:28: internal compiler error: fold check: original tree 
changed by fold
gcc.dg/builtins-26.c:27: internal compiler error: fold check: original tree 
changed by fold
gcc.dg/builtins-47.c:11: internal compiler error: fold check: original tree 
changed by fold
gcc.dg/builtins-52.c:12: internal compiler error: fold check: original tree 
changed by fold
gcc.dg/builtins-7.c:25: internal compiler error: fold check: original tree 
changed by fold
gcc.dg/pr19402-1.c:8: internal compiler error: fold check: original tree 
changed by fold
gcc.dg/torture/builtin-explog-1.c:66: internal compiler error: fold check: 
original tree changed by fold
gcc.dg/torture/builtin-integral-1.c:53: internal compiler error: fold check: 
original tree changed by fold
gcc.dg/unordered-1.c:7: internal compiler error: fold check: original tree 
changed by fold

All the ICEs above do not occur when I do not specify --enable-checking=fold.

Michael Cieslinski

-- 
           Summary: ICE: fold check: original tree changed by fold with --
                    enable-checking=fold
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: micis at gmx dot de
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: x86_64-unknown-linux-gnu
  GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20623