Merge branch 'unstable' of github.com:/antirez/redis into unstable

src/t_string.c

@@ -231,13 +231,13 @@ void setrangeCommand(redisClient *c) {
 
 void getrangeCommand(redisClient *c) {
     robj *o;
-    long start, end;
+    long long start, end;
     char *str, llbuf[32];
     size_t strlen;
 
-    if (getLongFromObjectOrReply(c,c->argv[2],&start,NULL) != REDIS_OK)
+    if (getLongLongFromObjectOrReply(c,c->argv[2],&start,NULL) != REDIS_OK)
         return;
-    if (getLongFromObjectOrReply(c,c->argv[3],&end,NULL) != REDIS_OK)
+    if (getLongLongFromObjectOrReply(c,c->argv[3],&end,NULL) != REDIS_OK)
         return;
     if ((o = lookupKeyReadOrReply(c,c->argv[1],shared.emptybulk)) == NULL ||
         checkType(c,o,REDIS_STRING)) return;
@@ -255,11 +255,11 @@ void getrangeCommand(redisClient *c) {
     if (end < 0) end = strlen+end;
     if (start < 0) start = 0;
     if (end < 0) end = 0;
-    if ((size_t)end >= strlen) end = strlen-1;
+    if ((unsigned long long)end >= strlen) end = strlen-1;
 
     /* Precondition: end >= 0 && end < strlen, so the only condition where
      * nothing can be returned is: start > end. */
-    if (start > end) {
+    if (start > end || strlen == 0) {
         addReply(c,shared.emptybulk);
     } else {
         addReplyBulkCBuffer(c,(char*)str+start,end-start+1);