improve iswdigit macro to diagnose errors

[oweals/musl.git] / include / wchar.h

diff --git a/include/wchar.h b/include/wchar.h
index a6742e3751884534ace7db28b12d86179b2fbec6..0167dce6b577a5f3349b5eef30ba000265560a09 100644 (file)
--- a/include/wchar.h
+++ b/include/wchar.h
@@ -12,14 +12,15 @@ extern "C" {
 #define __NEED_size_t
 #define __NEED_wchar_t
 #define __NEED_wint_t
+#define __NEED_mbstate_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
 #define __NEED_va_list
 #endif
 
-#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
+#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
 #define __NEED_wctype_t
 #endif
 
@@ -33,15 +34,14 @@ extern "C" {
 #define WCHAR_MIN (-1-0x7fffffff+L'\0')
 #endif
 
+#ifdef __cplusplus
 #define NULL 0L
+#else
+#define NULL ((void*)0)
+#endif
 
 #undef WEOF
-#define WEOF (-1)
-
-typedef struct __mbstate_t
-{
-       unsigned __opaque1, __opaque2;
-} mbstate_t;
+#define WEOF 0xffffffffU
 
 wchar_t *wcscpy (wchar_t *__restrict, const wchar_t *__restrict);
 wchar_t *wcsncpy (wchar_t *__restrict, const wchar_t *__restrict, size_t);
@@ -137,7 +137,7 @@ size_t wcsftime (wchar_t *__restrict, size_t, const wchar_t *__restrict, const s
 #undef iswdigit
 
 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
- || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
+ || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)  || defined(_BSD_SOURCE)
 FILE *open_wmemstream(wchar_t **, size_t *);
 size_t mbsnrtowcs(wchar_t *__restrict, const char **__restrict, size_t, size_t, mbstate_t *__restrict);
 size_t wcsnrtombs(char *__restrict, const wchar_t **__restrict, size_t, size_t, mbstate_t *__restrict);
@@ -153,7 +153,7 @@ int wcscoll_l(const wchar_t *, const wchar_t *, locale_t);
 size_t wcsxfrm_l(wchar_t *__restrict, const wchar_t *__restrict, size_t n, locale_t);
 #endif
 
-#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
+#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
 int wcwidth (wchar_t);
 int wcswidth (const wchar_t *, size_t);
 int       iswalnum(wint_t);
@@ -172,8 +172,11 @@ 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)
+#define iswdigit(a) (0 ? iswdigit(a) : ((unsigned)(a)-'0') < 10)
+#endif
 #endif
 
 #ifdef __cplusplus