printf core: fix gratuitous integer formatting buffer size

[musl] / include / wctype.h

diff --git a/include/wctype.h b/include/wctype.h
index 8c544f2..bc2420d 100644 (file)
--- a/include/wctype.h
+++ b/include/wctype.h
@@ -11,7 +11,7 @@ extern "C" {
 #define __NEED_wctype_t
 
 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
- || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
+ || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
 #define __NEED_locale_t
 #endif
 
@@ -43,11 +43,13 @@ wint_t    towupper(wint_t);
 wctrans_t wctrans(const char *);
 wctype_t  wctype(const char *);
 
+#ifndef __cplusplus
 #undef iswdigit
-#define iswdigit(a) (((unsigned)(a)-L'0') < 10)
+#define iswdigit(a) (0 ? iswdigit(a) : ((unsigned)(a)-'0') < 10)
+#endif
 
 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
- || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
+ || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
 
 int iswalnum_l(wint_t, locale_t);
 int iswalpha_l(wint_t, locale_t);