http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46440

           Summary: [4.5/4.6 Regression] ICE: in rtl_verify_flow_info, at
                    cfgrtl.c:2165 with -fstack-protector-all
                    -fno-tree-dominator-opts -fno-tree-fre
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: zso...@seznam.cz
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 22375
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22375
reduced testcase (from gcc.dg/tree-ssa/pr17141-2.c)

Compiler output:
$ gcc -O -fstack-protector-all -fno-tree-dominator-opts -fno-tree-fre pr46440.c 
pr46440.c: In function 'foo':
pr46440.c:16:1: error: verify_flow_info: Incorrect fallthru 2->3
pr46440.c:16:1: error: wrong insn in the fallthru edge
(barrier 15 24 33)
pr46440.c:16:1: internal compiler error: in rtl_verify_flow_info, at
cfgrtl.c:2165
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r166509 - crash
r153685 - crash
4.5 r166509 - crash
4.4 r166509 - OK

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