diff options
| -rw-r--r-- | lib/Headers/stdbool.h | 8 | ||||
| -rw-r--r-- | test/Headers/stdbool.cpp | 14 |
2 files changed, 21 insertions, 1 deletions
diff --git a/lib/Headers/stdbool.h b/lib/Headers/stdbool.h index e44a1f9a97..0467893f34 100644 --- a/lib/Headers/stdbool.h +++ b/lib/Headers/stdbool.h @@ -26,11 +26,17 @@ #ifndef __STDBOOL_H #define __STDBOOL_H -/* Don't define bool, true, and false in C++ */ +/* Don't define bool, true, and false in C++, except as a GNU extension. */ #ifndef __cplusplus #define bool _Bool #define true 1 #define false 0 +#elif defined(__GNUC__) && !defined(__STRICT_ANSI__) +/* Define _Bool, bool, false, true as a GNU extension. */ +#define _Bool bool +#define bool bool +#define false false +#define true true #endif #define __bool_true_false_are_defined 1 diff --git a/test/Headers/stdbool.cpp b/test/Headers/stdbool.cpp new file mode 100644 index 0000000000..a252cca1a6 --- /dev/null +++ b/test/Headers/stdbool.cpp @@ -0,0 +1,14 @@ +// RUN: %clang_cc1 -E -dM %s | FileCheck --check-prefix=CHECK-GNU-COMPAT %s +// RUN: %clang_cc1 -std=c++98 -E -dM %s | FileCheck --check-prefix=CHECK-CONFORMING %s +#include <stdbool.h> +#define zzz + +// CHECK-GNU-COMPAT: #define _Bool bool +// CHECK-GNU-COMPAT: #define bool bool +// CHECK-GNU-COMPAT: #define false false +// CHECK-GNU-COMPAT: #define true true + +// CHECK-CONFORMING-NOT: #define _Bool +// CHECK-CONFORMING: #define __CHAR_BIT__ +// CHECK-CONFORMING-NOT: #define false false +// CHECK-CONFORMING: #define zzz |