use restrict everywhere it's required by c99 and/or posix 2008

[musl] / src / multibyte / mbtowc.c

diff --git a/src/multibyte/mbtowc.c b/src/multibyte/mbtowc.c
index bdcaeb3..b5dd7e3 100644 (file)
--- a/src/multibyte/mbtowc.c
+++ b/src/multibyte/mbtowc.c
@@ -11,7 +11,7 @@
 
 #include "internal.h"
 
-int mbtowc(wchar_t *wc, const char *s, size_t n)
+int mbtowc(wchar_t *restrict wc, const char *restrict s, size_t n)
 {
        mbstate_t st = { 0 };
        n = mbrtowc(wc, s, n, &st);