test/Sema/attr-noinline.c

// RUN: %clang_cc1 %s -verify -fsyntax-only

int a __attribute__((noinline)); // expected-warning {{'noinline' attribute only applies to function types}}

void t1() __attribute__((noinline));

void t2() __attribute__((noinline(2))); // expected-error {{attribute requires 0 argument(s)}}