Print cursor as unsigned 64 bit integer

library.c

@@ -1065,6 +1065,15 @@ int redis_cmd_append_sstr_i64(smart_string *str, int64_t append) {
     return redis_cmd_append_sstr(str, nbuf, len);
 }
 
+/*
+ * Append a 64-bit unsigned integer to our command
+ */
+int redis_cmd_append_sstr_ui64(smart_string *str, uint64_t append) {
+    char nbuf[64];
+    int len = snprintf(nbuf, sizeof(nbuf), "%" PRIu64, append);
+    return redis_cmd_append_sstr(str, nbuf, len);
+}
+
 /*
  * Append a double to a smart string command
  */

library.h

@@ -50,6 +50,7 @@ int redis_cmd_append_sstr(smart_string *str, char *append, int append_len);
 int redis_cmd_append_sstr_int(smart_string *str, int append);
 int redis_cmd_append_sstr_long(smart_string *str, long append);
 int redis_cmd_append_sstr_i64(smart_string *str, int64_t append);
+int redis_cmd_append_sstr_ui64(smart_string *str, uint64_t append);
 int redis_cmd_append_sstr_dbl(smart_string *str, double value);
 int redis_cmd_append_sstr_zstr(smart_string *str, zend_string *zstr);
 int redis_cmd_append_sstr_zval(smart_string *str, zval *z, RedisSock *redis_sock);

redis_commands.c

@@ -574,7 +574,7 @@ int redis_key_dbl_cmd(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock,
 
 /* Generic to construct SCAN and variant commands */
 int redis_fmt_scan_cmd(char **cmd, REDIS_SCAN_TYPE type, char *key, int key_len,
-                       long it, char *pat, int pat_len, long count)
+                       uint64_t it, char *pat, int pat_len, long count)
 {
     static char *kw[] = {"SCAN","SSCAN","HSCAN","ZSCAN"};
     int argc;
@@ -591,7 +591,7 @@ int redis_fmt_scan_cmd(char **cmd, REDIS_SCAN_TYPE type, char *key, int key_len,
     }
 
     // Append cursor
-    redis_cmd_append_sstr_long(&cmdstr, it);
+    redis_cmd_append_sstr_ui64(&cmdstr, it);
 
     // Append count if we've got one
     if (count) {

redis_commands.h

@@ -309,7 +309,7 @@ int redis_copy_cmd(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock,
     char **cmd, int *cmd_len, short *slot, void **ctx);
 
 int redis_fmt_scan_cmd(char **cmd, REDIS_SCAN_TYPE type, char *key, int key_len,
-    long it, char *pat, int pat_len, long count);
+    uint64_t it, char *pat, int pat_len, long count);
 
 int redis_geoadd_cmd(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock,
     char **cmd, int *cmd_len, short *slot, void **ctx);