https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68511
--- Comment #2 from vries at gcc dot gnu.org --- regression between https://gcc.gnu.org/ml/gcc-regression/2015-11/msg00711.html: between r230767 and r230734. r230755 looks like it could be related: ... gcc/c-family PR c++/68001 * c-gimplify.c (c_gimplify_expr): Stop the process if see an error. * cilk.c (recognize_spawn): Determine location in a more precise way. gcc/cp * cp-gimplify.c (cp_gimplify_expr): Stop the process if see an error. gcc/testsuite * g++.dg/cilk-plus/CK/pr68001.cc: New test. ...