ext/date/date_parse.c in date-3.0.0 vs ext/date/date_parse.c in date-3.0.1

@@ -68,11 +68,11 @@
 
 static size_t
 digit_span(const char *s, const char *e)
 {
     size_t i = 0;
-    while (s + i < e && isdigit(s[i])) i++;
+    while (s + i < e && isdigit((unsigned char)s[i])) i++;
     return i;
 }
 
 static void
 s3e(VALUE hash, VALUE y, VALUE m, VALUE d, int bc)
@@ -108,11 +108,11 @@
 	const char *s, *bp, *ep;
 	size_t l;
 
 	s = RSTRING_PTR(y);
 	ep = RSTRING_END(y);
-	while (s < ep && !issign(*s) && !isdigit(*s))
+	while (s < ep && !issign(*s) && !isdigit((unsigned char)*s))
 	    s++;
 	if (s >= ep) goto no_date;
 	bp = s;
 	if (issign((unsigned char)*s))
 	    s++;
@@ -160,11 +160,11 @@
 	size_t l;
 	VALUE iy;
 
 	s = RSTRING_PTR(y);
 	ep = RSTRING_END(y);
-	while (s < ep && !issign(*s) && !isdigit(*s))
+	while (s < ep && !issign(*s) && !isdigit((unsigned char)*s))
 	    s++;
 	if (s >= ep) goto no_year;
 	bp = s;
 	if (issign(*s)) {
 	    s++;
@@ -197,11 +197,11 @@
 	size_t l;
 	VALUE im;
 
 	s = RSTRING_PTR(m);
 	ep = RSTRING_END(m);
-	while (s < ep && !isdigit(*s))
+	while (s < ep && !isdigit((unsigned char)*s))
 	    s++;
 	if (s >= ep) goto no_month;
 	bp = s;
 	l = digit_span(s, ep);
 	ep = s + l;
@@ -223,11 +223,11 @@
 	size_t l;
 	VALUE id;
 
 	s = RSTRING_PTR(d);
 	ep = RSTRING_END(d);
-	while (s < ep && !isdigit(*s))
+	while (s < ep && !isdigit((unsigned char)*s))
 	    s++;
 	if (s >= ep) goto no_mday;
 	bp = s;
 	l = digit_span(s, ep);
 	ep = s + l;
@@ -362,23 +362,23 @@
 
 static int
 str_end_with_word(const char *s, long l, const char *w)
 {
     int n = (int)strlen(w);
-    if (l <= n || !isspace(s[l - n - 1])) return 0;
+    if (l <= n || !isspace((unsigned char)s[l - n - 1])) return 0;
     if (strncasecmp(&s[l - n], w, n)) return 0;
-    do ++n; while (l > n && isspace(s[l - n - 1]));
+    do ++n; while (l > n && isspace((unsigned char)s[l - n - 1]));
     return n;
 }
 
 static long
 shrunk_size(const char *s, long l)
 {
     long i, ni;
     int sp = 0;
     for (i = ni = 0; i < l; ++i) {
-	if (!isspace(s[i])) {
+	if (!isspace((unsigned char)s[i])) {
 	    if (sp) ni++;
 	    sp = 0;
 	    ni++;
 	}
 	else {
@@ -392,11 +392,11 @@
 shrink_space(char *d, const char *s, long l)
 {
     long i, ni;
     int sp = 0;
     for (i = ni = 0; i < l; ++i) {
-	if (!isspace(s[i])) {
+	if (!isspace((unsigned char)s[i])) {
 	    if (sp) d[ni++] = ' ';
 	    sp = 0;
 	    d[ni++] = s[i];
 	}
 	else {
@@ -752,11 +752,11 @@
     long l;
 
     l = RSTRING_LEN(y);
     if (l < 2) return 0;
     s = RSTRING_PTR(y);
-    if (!isdigit(s[1])) return 0;
-    return (l == 2 || !isdigit(s[2]));
+    if (!isdigit((unsigned char)s[1])) return 0;
+    return (l == 2 || !isdigit((unsigned char)s[2]));
 }
 
 static int
 check_apost(VALUE a, VALUE b, VALUE c)
 {