http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60082
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- catch_exc.cc FAILs (other than timeout) seem to be a Cilk+ bug, if it ever worked, it seems to have worked by accident. The problem is that __cilkrts_rethrow conditionally throws an exception, but is marked TREE_NOTHROW, thus there are no EH edges out of it. 2014-02-07 Jakub Jelinek <ja...@redhat.com> * cilk-common.c (cilk_init_builtins): Clear TREE_NOTHROW flag on __cilkrts_rethrow builtin. --- gcc/cilk-common.c.jj 2014-02-06 23:06:47.000000000 +0100 +++ gcc/cilk-common.c 2014-02-07 11:11:15.253128977 +0100 @@ -285,6 +285,7 @@ cilk_init_builtins (void) /* __cilkrts_rethrow (struct stack_frame *); */ cilk_rethrow_fndecl = install_builtin ("__cilkrts_rethrow", fptr_fun, BUILT_IN_CILK_RETHROW, false); + TREE_NOTHROW (cilk_rethrow_fndecl) = 0; /* __cilkrts_save_fp_ctrl_state (__cilkrts_stack_frame *); */ cilk_save_fp_fndecl = install_builtin ("__cilkrts_save_fp_ctrl_state",