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| author | Richard Trieu <rtrieu@google.com> | 2013-06-12 21:20:57 +0000 |
|---|---|---|
| committer | Richard Trieu <rtrieu@google.com> | 2013-06-12 21:20:57 +0000 |
| commit | 33a4b3db0de5fbba06264a46f560220b5f8f11a8 (patch) | |
| tree | be7f0fa608cba875aadb51581141eb56cff06290 /clang/test/Lexer/header.cpp | |
| parent | 2bb2aa27bfe729aa6d60b17cfafeaa959c7ea050 (diff) | |
| download | bcm5719-llvm-33a4b3db0de5fbba06264a46f560220b5f8f11a8.tar.gz bcm5719-llvm-33a4b3db0de5fbba06264a46f560220b5f8f11a8.zip | |
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
Diffstat (limited to 'clang/test/Lexer/header.cpp')
| -rw-r--r-- | clang/test/Lexer/header.cpp | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/clang/test/Lexer/header.cpp b/clang/test/Lexer/header.cpp new file mode 100644 index 00000000000..278ff2e4323 --- /dev/null +++ b/clang/test/Lexer/header.cpp @@ -0,0 +1,33 @@ +// 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" + +#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 + +#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 + +// CHECK: 2 warnings generated. |
