[Bug tree-optimization/47366] New: [4.6 Regression] ICE: verify_flow_info failed: missing REG_EH_REGION note in the end of bb 3 with -fnon-call-exceptions -fno-tree-ccp -fno-tree-forwprop

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47366

           Summary: [4.6 Regression] ICE: verify_flow_info failed: missing
                    REG_EH_REGION note in the end of bb 3 with
                    -fnon-call-exceptions -fno-tree-ccp -fno-tree-forwprop
           Product: gcc
           Version: 4.5.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: zso...@seznam.cz
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 23036
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23036
reduced testcase

Compiler output:
$ gcc -O -fnon-call-exceptions -fno-tree-ccp -fno-tree-forwprop testcase.C 
testcase.C: In function 'void foo()':
testcase.C:18:1: error: missing REG_EH_REGION note in the end of bb 3
testcase.C:18:1: internal compiler error: verify_flow_info failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r169006 - crash
4.5 r168785 - OK