clang/test/Lexer/header.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -Wno-header-guard %s
   2 // RUN: %clang_cc1 -fsyntax-only -Wheader-guard %s 2>&1 | FileCheck %s
   3
   4 #include "Inputs/good-header-guard.h"
   5 #include "Inputs/no-define.h"
   6 #include "Inputs/different-define.h"
   7 #include "Inputs/out-of-order-define.h"
   8 #include "Inputs/tokens-between-ifndef-and-define.h"
   9 #include "Inputs/unlikely-to-be-header-guard.h"
  10
  11 #include "Inputs/bad-header-guard.h"
  12 // CHECK: In file included from {{.*}}header.cpp:{{[0-9]*}}:
  13 // CHECK: {{.*}}bad-header-guard.h:1:9: warning: 'bad_header_guard' is used as a header guard here, followed by #define of a different macro
  14 // CHECK: {{^}}#ifndef bad_header_guard
  15 // CHECK: {{^}}        ^~~~~~~~~~~~~~~~
  16 // CHECK: {{.*}}bad-header-guard.h:2:9: note: 'bad_guard' is defined here; did you mean 'bad_header_guard'?
  17 // CHECK: {{^}}#define bad_guard
  18 // CHECK: {{^}}        ^~~~~~~~~
  19 // CHECK: {{^}}        bad_header_guard
  20
  21 #include "Inputs/bad-header-guard-defined.h"
  22 // CHECK: In file included from {{.*}}header.cpp:{{[0-9]*}}:
  23 // CHECK: {{.*}}bad-header-guard-defined.h:1:2: warning: 'foo' is used as a header guard here, followed by #define of a different macro
  24 // CHECK: {{^}}#if !defined(foo)
  25 // CHECK: {{^}} ^~
  26 // CHECK: {{.*}}bad-header-guard-defined.h:2:9: note: 'goo' is defined here; did you mean 'foo'?
  27 // CHECK: {{^}}#define goo
  28 // CHECK: {{^}}        ^~~
  29 // CHECK: {{^}}        foo
  30
  31 #include "Inputs/multiple.h"
  32 #include "Inputs/multiple.h"
  33 #include "Inputs/multiple.h"
  34 #include "Inputs/multiple.h"
  35 // CHECK: In file included from {{.*}}header.cpp:{{[0-9]*}}:
  36 // CHECK: {{.*}}multiple.h:1:9: warning: 'multiple' is used as a header guard here, followed by #define of a different macro
  37 // CHECK: {{^}}#ifndef multiple
  38 // CHECK: {{^}}        ^~~~~~~~
  39 // CHECK: {{.*}}multiple.h:2:9: note: 'multi' is defined here; did you mean 'multiple'?
  40 // CHECK: {{^}}#define multi
  41 // CHECK: {{^}}        ^~~~~
  42 // CHECK: {{^}}        multiple
  43
  44 // CHECK: 3 warnings generated.