https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65984
Bug ID: 65984 Summary: ICE: definition in block 4 does not dominate use in block 2 with -fnon-call-exceptions -fsanitize=enum Product: gcc Version: 6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz Target Milestone: --- Created attachment 35443 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35443&action=edit reduced testcase Compiler output: $ gcc -fnon-call-exceptions -fsanitize=enum testcase.C testcase.C: In function 'int foo(int)': testcase.C:12:1: error: definition in block 4 does not dominate use in block 2 } ^ for SSA_NAME: _3 in statement: _4 = _3; testcase.C:12:1: internal compiler error: verify_ssa failed 0xf08601 verify_ssa(bool, bool) /mnt/svn/gcc-trunk/gcc/tree-ssa.c:1068 0xc21ed5 execute_function_todo /mnt/svn/gcc-trunk/gcc/passes.c:1953 0xc2268b execute_todo /mnt/svn/gcc-trunk/gcc/passes.c:2003 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <http://gcc.gnu.org/bugs.html> for instructions. Tested revisions: r222716 - ICE 5 r222437 - ICE 4_9 r222436 - ICE