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llvm-project/clang/test/Lexer/header.cpp

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Introducing -Wheader-guard, a warning that checks header guards actually work properly. This warning checks that the #ifndef and #define directives at the beginning of a header refer to the same macro name. Includes a fix-it hint to correct the header guard. llvm-svn: 183867
2013-06-13 05:20:57 +08:00
// RUN: %clang_cc1 -fsyntax-only -Wno-header-guard %s
// RUN: %clang_cc1 -fsyntax-only -Wheader-guard %s 2>&1 | FileCheck %s
#include "Inputs/good-header-guard.h"
#include "Inputs/no-define.h"
#include "Inputs/different-define.h"
#include "Inputs/out-of-order-define.h"
#include "Inputs/tokens-between-ifndef-and-define.h"
Relax header guard mismatch warning with edit distance heuristic. If the edit distance between the two macros is more than 50%, DefinedMacro may not be header guard or can be header guard of another header file or it might be defining something completely different set by the build environment. llvm-svn: 192547
2013-10-13 07:17:37 +08:00
#include "Inputs/unlikely-to-be-header-guard.h"
Introducing -Wheader-guard, a warning that checks header guards actually work properly. This warning checks that the #ifndef and #define directives at the beginning of a header refer to the same macro name. Includes a fix-it hint to correct the header guard. llvm-svn: 183867
2013-06-13 05:20:57 +08:00
#include "Inputs/bad-header-guard.h"
// CHECK: In file included from {{.*}}header.cpp:{{[0-9]*}}:
// 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
// CHECK: {{^}}#ifndef bad_header_guard
// CHECK: {{^}} ^~~~~~~~~~~~~~~~
// CHECK: {{.*}}bad-header-guard.h:2:9: note: 'bad_guard' is defined here; did you mean 'bad_header_guard'?
// CHECK: {{^}}#define bad_guard
// CHECK: {{^}} ^~~~~~~~~
// CHECK: {{^}} bad_header_guard
PR16339: Don't produce a diagnostic pointing at the whitespace between a '#if' and a '!defined(X)' if we find a broken header guard. This is suboptimal; we should point the diagnostic at the 'X' token not the 'if' token, but it fixes the crash. llvm-svn: 184054
2013-06-16 13:05:39 +08:00
#include "Inputs/bad-header-guard-defined.h"
// CHECK: In file included from {{.*}}header.cpp:{{[0-9]*}}:
// CHECK: {{.*}}bad-header-guard-defined.h:1:2: warning: 'foo' is used as a header guard here, followed by #define of a different macro
// CHECK: {{^}}#if !defined(foo)
// CHECK: {{^}} ^~
// CHECK: {{.*}}bad-header-guard-defined.h:2:9: note: 'goo' is defined here; did you mean 'foo'?
// CHECK: {{^}}#define goo
// CHECK: {{^}} ^~~
// CHECK: {{^}} foo
Introducing -Wheader-guard, a warning that checks header guards actually work properly. This warning checks that the #ifndef and #define directives at the beginning of a header refer to the same macro name. Includes a fix-it hint to correct the header guard. llvm-svn: 183867
2013-06-13 05:20:57 +08:00
#include "Inputs/multiple.h"
#include "Inputs/multiple.h"
#include "Inputs/multiple.h"
#include "Inputs/multiple.h"
// CHECK: In file included from {{.*}}header.cpp:{{[0-9]*}}:
// CHECK: {{.*}}multiple.h:1:9: warning: 'multiple' is used as a header guard here, followed by #define of a different macro
// CHECK: {{^}}#ifndef multiple
// CHECK: {{^}} ^~~~~~~~
// CHECK: {{.*}}multiple.h:2:9: note: 'multi' is defined here; did you mean 'multiple'?
// CHECK: {{^}}#define multi
// CHECK: {{^}} ^~~~~
// CHECK: {{^}} multiple
PR16339: Don't produce a diagnostic pointing at the whitespace between a '#if' and a '!defined(X)' if we find a broken header guard. This is suboptimal; we should point the diagnostic at the 'X' token not the 'if' token, but it fixes the crash. llvm-svn: 184054
2013-06-16 13:05:39 +08:00
// CHECK: 3 warnings generated.