[Bug c/23944] New: segv in fold_indirect_ref_1 in fold-const.c:11505

["marcus at jet dot franken dot de" <gcc-bugzilla at gcc dot gnu dot org>]

testcase below (extract from blender) causes a segfault:  
  
LANG=C projects/gcc/BIN/bin/gcc -c constraint.i   
constraint.i: In function 'f':  
constraint.i:4: internal compiler error: Segmentation fault  
 
gdb shows:  
#0  fold_indirect_ref_1 (type=0x2aaaaaea0e70, op0=0x0) 
at /home/marcus/projects/gcc/gcc/fold-const.c:11505 
11505     STRIP_NOPS (sub);

-- 
           Summary: segv in fold_indirect_ref_1 in fold-const.c:11505
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: marcus at jet dot franken dot de
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23944