https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71600
--- Comment #1 from Bill Seurer <seurer at linux dot vnet.ibm.com> --- Also this test case: FAIL: gcc.dg/gnu99-static-1.c (test for errors, line 14) line 14: void g0(void) { __alignof__(f0()); } /* { dg-error "__alignof__ \\(expression\\)" } */