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