Fix 5.3 as well

diff --git a/ext/standard/var_unserializer.re b/ext/standard/var_unserializer.re
index 43c230f527ec2fce0ebb07dc5c60a6a4a9bda39a..fd6f2004c71d6ae90df47809c635eb108e80ff03 100644 (file)
--- a/ext/standard/var_unserializer.re
+++ b/ext/standard/var_unserializer.re
@@ -216,7 +216,7 @@ static inline long parse_iv2(const unsigned char *p, const unsigned char **q)
        while (1) {
                cursor = (char)*p;
                if (cursor >= '0' && cursor <= '9') {
-                       result = result * 10 + cursor - '0';
+                       result = result * 10 + (size_t)(cursor - (unsigned char)'0');
                } else {
                        break;
                }