http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52177

             Bug #: 52177
           Summary: ICE: verify_gimple failed: non-trivial conversion at
                    assignment with __atomic_is_lock_free()
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: zso...@seznam.cz
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 26619
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26619
reduced testcase

Compiler output:
$ gcc -O -fno-tree-ccp testcase.C 
testcase.C: In member function 'bool S::is_lock_free()':
testcase.C:20:1: error: non-trivial conversion at assignment
bool
int
D.2199_5 = 1;

testcase.C:20:1: internal compiler error: verify_gimple failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r183994 - crash

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