[Bug c++/31617] New: [4.3 Regression] Segfault in integer_zerop, called via ipa-type-escape.c

["tbm at cyrius dot com" <gcc-bugzilla at gcc dot gnu dot org>]

I get the following segfault with gcc 4.3 20070326 and 20070417.  It works
with gcc 4.2:

Analyzing compilation unit
Performing interprocedural optimizations
 <visibility> <early_local_cleanups> <inline> <static-var> <pure-const>
<type-escape-var>
Program received signal SIGSEGV, Segmentation fault.
integer_zerop (expr=0x0) at /home/tbm/scratch/gcc/gcc/tree.c:1295
1295      STRIP_NOPS (expr);
(gdb) where
#0  integer_zerop (expr=0x0) at /home/tbm/scratch/gcc/gcc/tree.c:1295
#1  0x0000000000923316 in okay_pointer_operation (code=IDENTIFIER_NODE,
op0=0x2b94c001cd20,
    op1=0x2b94bfcbeba0) at /home/tbm/scratch/gcc/gcc/ipa-type-escape.c:1471
#2  0x00000000009252fb in scan_for_refs (tp=<value optimized out>,
walk_subtrees=0x7fffeb506cfc,
    data=<value optimized out>) at
/home/tbm/scratch/gcc/gcc/ipa-type-escape.c:1544
#3  0x00000000008ca35b in walk_tree (tp=0x2b94bfffbd70, func=0x924f20
<scan_for_refs>,
    data=0x2b94bfeade00, pset=0xee27e0) at
/home/tbm/scratch/gcc/gcc/tree.c:7978
#4  0x0000000000921bb8 in type_escape_execute () at
/home/tbm/scratch/gcc/gcc/ipa-type-escape.c:1707
#5  0x000000000070b5d1 in execute_one_pass (pass=0xdff8c0) at
/home/tbm/scratch/gcc/gcc/passes.c:1058
#6  0x000000000070b7e5 in execute_ipa_pass_list (pass=0xdff8c0)
    at /home/tbm/scratch/gcc/gcc/passes.c:1126


-- 
           Summary: [4.3 Regression] Segfault in integer_zerop, called via
                    ipa-type-escape.c
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tbm at cyrius dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31617