ext/oj/dump_leaf.c in oj-3.6.9 vs ext/oj/dump_leaf.c in oj-3.6.10

@@ -51,10 +51,10 @@
     switch (leaf->value_type) {
     case STR_VAL:
 	oj_dump_cstr(leaf->str, strlen(leaf->str), 0, 0, out);
 	break;
     case RUBY_VAL:
-	oj_dump_cstr(rb_string_value_cstr(&leaf->value), RSTRING_LEN(leaf->value), 0, 0, out);
+	oj_dump_cstr(rb_string_value_cstr(&leaf->value), (int)RSTRING_LEN(leaf->value), 0, 0, out);
 	break;
     case COL_VAL:
     default:
 	rb_raise(rb_eTypeError, "Unexpected value type %02x.\n", leaf->value_type);
 	break;