1 files changed, 3 insertions, 0 deletions
diff --git a/numeric.c b/numeric.c
index fe549fb1ee..5157b3b64f 100644
--- a/numeric.c
+++ b/numeric.c
@@ -943,6 +943,9 @@ rb_num2long(val)
       case T_BIGNUM:
 	return rb_big2long(val);
 
+      case T_SYMBOL:
+	rb_warning("treating Symbol as an integer");
+	/* fall through */
       default:
 	val = rb_to_int(val);
 	return NUM2LONG(val);