* c-common.c (boolean_increment): New function.

	* c-common.h (enum c_tree_index): Add CTI_C_BOOL_TYPE,
	CTI_C_BOOL_TRUE and CTI_C_BOOL_FALSE.
	(c_bool_type_node, c_bool_true_node, c_bool_false_node): Define.
	(boolean_increment): Declare.
	* c-convert.c (convert): Allow for BOOLEAN_TYPE.
	* c-decl.c (init_decl_processing): Create boolean nodes.
	(finish_struct): Allow for _Bool bitfields.
	* c-parse.in (reswords): Add _Bool.
	(rid_to_yy): Allow for RID_BOOL.
	* c-typeck.c (default_conversion): Make booleans promote to int.
	(convert_arguments, build_unary_op, build_modify_expr,
	convert_for_assignment): Allow for booleans.
	* ginclude/stdbool.h: Make conforming to C99.

cp:
	* typeck.c (build_unary_op): Use boolean_increment from
	c-common.c, moving the relevant code there.

testsuite:
	* gcc.dg/c99-bool-1.c: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@37428 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 3 insertions, 13 deletions

diff --git a/gcc/ginclude/stdbool.h b/gcc/ginclude/stdbool.h
index 1e49dc0fe74..33f7d3d4110 100644
--- a/gcc/ginclude/stdbool.h
+++ b/gcc/ginclude/stdbool.h
@@ -32,20 +32,10 @@ Boston, MA 02111-1307, USA.  */
 #define _STDBOOL_H
 
 #ifndef __cplusplus
-/* The type `_Bool' must promote to `int' or `unsigned int'.  The constants
-   `true' and `false' must have the value 0 and 1 respectively.  */
-typedef enum
-  {
-    false = 0,
-    true = 1
-  } _Bool;
-
-/* The names `true' and `false' must also be made available as macros.  */
-#define false	false
-#define true	true
 
-/* The macro `bool', which may be undefined, expands to _Bool.  */
-#define bool _Bool
+#define bool	_Bool
+#define true	1
+#define false	0
 
 #else /* __cplusplus */