Let MB_CUR_LEN lookup the actual value.

* instead of yielding 1, MB_CUR_LEN now looks up the correct
  value in the ctype data provided by the locale backend

headers/posix/ctype.h

@@ -72,6 +72,8 @@ extern const int *__ctype_toupper;
 #define isupper(c)	__isctype((c), _ISupper)
 #define isxdigit(c)	__isctype((c), _ISxdigit)
 
+extern unsigned short int __ctype_mb_cur_max;
+
 #ifdef __cplusplus
 }
 #endif

headers/posix/stdlib.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2010 Haiku Inc. All Rights Reserved.
+ * Copyright 2002-2011 Haiku Inc. All Rights Reserved.
  * Distributed under the terms of the MIT License.
  */
 #ifndef _STDLIB_H_
@@ -13,9 +13,8 @@
 #include <sys/types.h>
 #include <wchar_t.h>
 
-
 #define RAND_MAX      0x7fffffff
-#define MB_CUR_MAX    1
+#define MB_CUR_MAX    (__ctype_get_mb_cur_max())
 
 #define EXIT_SUCCESS  0
 #define EXIT_FAILURE  1
@@ -180,6 +179,9 @@ extern int		grantpt(int masterFD);
 extern char*	ptsname(int masterFD);
 extern int		unlockpt(int masterFD);
 
+/* internal accessor to value for MB_CUR_MAX */
+extern unsigned short __ctype_get_mb_cur_max(void);
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif

headers/private/libroot/locale/LocaleBackend.h

@@ -31,6 +31,8 @@ struct LocaleCtypeDataBridge {
 	const int*				posixToUpperMap;
 
 	LocaleCtypeDataBridge();
+
+	void setMbCurMax(unsigned short mbCurMax);
 };
 
 

src/system/libroot/posix/glibc/locale/Jamfile

@@ -23,6 +23,5 @@ MergeObject posix_gnu_locale.o :
 	lc-messages.c
 	lc-monetary.c
 	lc-numeric.c
-	mb_cur_max.c
 	xlocale.c
 ;

src/system/libroot/posix/glibc/stdlib/stdlib.h

@@ -135,7 +135,7 @@ __END_NAMESPACE_C99
 
 /* Maximum length of a multibyte character in the current locale.  */
 #define	MB_CUR_MAX	(__ctype_get_mb_cur_max ())
-extern size_t __ctype_get_mb_cur_max (void) __THROW;
+extern unsigned short __ctype_get_mb_cur_max(void);
 
 
 __BEGIN_NAMESPACE_STD

src/system/libroot/posix/locale/LocaleDataBridge.cpp

@@ -36,6 +36,12 @@ LocaleCtypeDataBridge::LocaleCtypeDataBridge()
 }
 
 
+void LocaleCtypeDataBridge::setMbCurMax(unsigned short mbCurMax)
+{
+	__ctype_mb_cur_max = mbCurMax;
+}
+
+
 LocaleMessagesDataBridge::LocaleMessagesDataBridge()
 	:
 	posixLanginfo(gPosixLanginfo)

src/system/libroot/posix/locale/ctype.cpp

@@ -26,6 +26,20 @@
 #undef toupper
 
 
+extern "C"
+{
+
+
+unsigned short int __ctype_mb_cur_max = 1;
+
+
+unsigned short
+__ctype_get_mb_cur_max()
+{
+	return __ctype_mb_cur_max;
+}
+
+
 int
 isalnum(int c)
 {
@@ -180,3 +194,6 @@ toupper(int c)
 
 	return c;
 }
+
+
+}