diff options
-rw-r--r-- | range.c | 3 | ||||
-rw-r--r-- | test/ruby/test_range.rb | 2 |
2 files changed, 5 insertions, 0 deletions
@@ -1012,6 +1012,9 @@ range_first(int argc, VALUE *argv, VALUE range) { VALUE n, ary[2]; + if (NIL_P(RANGE_BEG(range))) { + rb_raise(rb_eRangeError, "cannot get the first element of beginless range"); + } if (argc == 0) return RANGE_BEG(range); rb_scan_args(argc, argv, "1", &n); diff --git a/test/ruby/test_range.rb b/test/ruby/test_range.rb index b1008d041f..5d21d30257 100644 --- a/test/ruby/test_range.rb +++ b/test/ruby/test_range.rb @@ -443,6 +443,8 @@ class TestRange < Test::Unit::TestCase assert_equal("a", ("a"..nil).first) assert_raise(RangeError) { (0..nil).last } assert_raise(RangeError) { (0..nil).last(3) } + assert_raise(RangeError) { (nil..0).first } + assert_raise(RangeError) { (nil..0).first(3) } assert_equal([0, 1, 2], (0..10).first(3.0)) assert_equal([8, 9, 10], (0..10).last(3.0)) |