c-common.c (cb_register_builtins): Define __WCHAR_MAX__.

	* c-common.c (cb_register_builtins): Define __WCHAR_MAX__.
	* doc/cpp.texi (Common Predefined Macros): Document.

From-SVN: r57966

gcc/ChangeLog

@@ -4,6 +4,11 @@
 
 2002-10-09  Gabriel Dos Reis  <gdr@integrable-solutions.net>
 
+	* c-common.c (cb_register_builtins): Define __WCHAR_MAX__.
+	* doc/cpp.texi (Common Predefined Macros): Document.
+
+2002-10-09  Gabriel Dos Reis  <gdr@integrable-solutions.net>
+
 	PR doc/7484
 	* doc/invoke.texi (Option Summary): List
 	-Wmissing-declarations as a C only option.

gcc/c-common.c

@@ -4918,6 +4918,7 @@ cb_register_builtins (pfile)
   builtin_define_type_max ("__INT_MAX__", integer_type_node, 0);
   builtin_define_type_max ("__LONG_MAX__", long_integer_type_node, 1);
   builtin_define_type_max ("__LONG_LONG_MAX__", long_long_integer_type_node, 2);
+  builtin_define_type_max ("__WCHAR_MAX__", wchar_type_node, 0);
 
   builtin_define_type_precision ("__CHAR_BIT__", char_type_node);
 

gcc/doc/cpp.texi

@@ -2013,11 +2013,13 @@ numerical limits work correctly.  You should not use
 this macro directly; instead, include the appropriate headers.
 
 @item __SCHAR_MAX__
+@itemx __WCHAR_MAX__
 @itemx __SHRT_MAX__
 @itemx __INT_MAX__
 @itemx __LONG_MAX__
 @itemx __LONG_LONG_MAX__
-Defined to the maximum value of the @code{signed char}, @code{signed short},
+Defined to the maximum value of the @code{signed char}, @code{wchar_t}, 
+@code{signed short},
 @code{signed int}, @code{signed long}, and @code{signed long long} types
 respectively.  They exist to make the standard header given numerical limits
 work correctly.  You should not use these macros directly; instead, include