clang/test/Preprocessor/warn-macro-unused.c

   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
  11 unused
  12
  13 #undef unused_from_header // no warning