* range.c (range_max): fix behavior with excluded end value.

	  [Bug #4591]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32482 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 0 deletions

diff --git a/range.c b/range.c
index 083c70a165..b7ae19118e 100644
--- a/range.c
+++ b/range.c
@@ -665,6 +665,9 @@ range_max(VALUE range)
 		rb_raise(rb_eTypeError, "cannot exclude non Integer end value");
 	    }
 	    if (c == 0) return Qnil;
+	    if (!FIXNUM_P(b) && !rb_obj_is_kind_of(b,rb_cInteger)) {
+		rb_raise(rb_eTypeError, "cannot exclude end value with non Integer begin value");
+	    }
 	    if (FIXNUM_P(e)) {
 		return LONG2NUM(FIX2LONG(e) - 1);
 	    }