Fix UB

repology · Feb 12, 2019 · 5252d6e · 5252d6e
1 parent b764362
commit 5252d6e
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/libversion/compare.c b/libversion/compare.c
@@ -67,7 +67,7 @@ enum {
 };
 
 static int mymemcasecmp(const char* a, const char* b, size_t len) {
-	while (len-- != 0) {
+	while (len != 0) {
 		unsigned char ua = (unsigned char)((*a >= 'A' && *a <= 'Z') ? (*a - 'A' + 'a') : (*a));
 		unsigned char ub = (unsigned char)((*b >= 'A' && *b <= 'Z') ? (*b - 'A' + 'a') : (*b));
 
@@ -76,6 +76,7 @@ static int mymemcasecmp(const char* a, const char* b, size_t len) {
 
 		a++;
 		b++;
+		len--;
 	}
 
 	return 0;