suppress macro definitions of ctype functions under C++

[musl] / include / wchar.h

diff --git a/include/wchar.h b/include/wchar.h
index 52da639..ad727a8 100644 (file)
--- a/include/wchar.h
+++ b/include/wchar.h
@@ -172,9 +172,12 @@ int       iswctype(wint_t, wctype_t);
 wint_t    towlower(wint_t);
 wint_t    towupper(wint_t);
 wctype_t  wctype(const char *);
+
+#ifndef __cplusplus
 #undef iswdigit
 #define iswdigit(a) ((unsigned)(a)-'0' < 10)
 #endif
+#endif
 
 #ifdef __cplusplus
 }