Range#size returns nil for (.."a") and (nil..)

Fixes [Bug #18983]

1 files changed, 3 insertions, 1 deletions

diff --git a/range.c b/range.c
index b49b1bd79c..a2c0e21860 100644
--- a/range.c
+++ b/range.c
@@ -816,7 +816,9 @@ range_size(VALUE range)
         }
     }
     else if (NIL_P(b)) {
-        return DBL2NUM(HUGE_VAL);
+        if (rb_obj_is_kind_of(e, rb_cNumeric)) {
+            return DBL2NUM(HUGE_VAL);
+        }
     }
 
     return Qnil;