Bug #25745 (ctype functions don't deal with non-ascii characters properly)

diff --git a/ext/ctype/ctype.c b/ext/ctype/ctype.c
index 764ac5af9020778f12508d91bbf4bba7ab1e4c18..7e62e9bc7967f4c1271db3ef21481f7407b66b51 100644 (file)
--- a/ext/ctype/ctype.c
+++ b/ext/ctype/ctype.c
@@ -105,7 +105,7 @@ PHP_MINFO_FUNCTION(ctype)
                        p=Z_STRVAL_P(c); \
                        len = Z_STRLEN_P(c); \
                        for(n=0;n<len;n++) { \
-                               if(!iswhat(*p++)) RETURN_FALSE; \
+                               if(!iswhat((int)*(unsigned char *)(p++))) RETURN_FALSE; \
                        } \
                        RETURN_TRUE; \
                } \