1// RUN: %clang_cc1 %s -Wunused-macros -Dfoo -Dfoo -verify
2
3#include "warn-macro-unused.h"
4
5# 1 "warn-macro-unused-fake-header.h" 1
6#define unused_from_fake_header
7# 5 "warn-macro-unused.c" 2
8
9#define unused // expected-warning {{macro is not used}}
10#define unused
11unused
12
13// rdar://9745065
14#undef unused_from_header // no warning
15