https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71293
--- Comment #2 from Bill Seurer <seurer at linux dot vnet.ibm.com> --- From old logs it appears these started working back in June sometime Regressions on trunk (power8) at revision 237314 vs revision 237309 New passes: FAIL: gcc.dg/plugin/must-tail-call-2.c -fplugin=./must_tail_call_plugin.so (test for errors, line 32) FAIL: gcc.dg/plugin/must-tail-call-2.c -fplugin=./must_tail_call_plugin.so (test for errors, line 39) FAIL: gcc.dg/plugin/must-tail-call-2.c -fplugin=./must_tail_call_plugin.so (test for errors, line 57) FAIL: gcc.dg/plugin/must-tail-call-2.c -fplugin=./must_tail_call_plugin.so (test for excess errors)