diff options
Diffstat (limited to 'bootstraptest/test_yjit.rb')
-rw-r--r-- | bootstraptest/test_yjit.rb | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/bootstraptest/test_yjit.rb b/bootstraptest/test_yjit.rb index 09bce6735b..ea564a6a6e 100644 --- a/bootstraptest/test_yjit.rb +++ b/bootstraptest/test_yjit.rb @@ -1,3 +1,23 @@ +assert_equal 'true', %q{ + # regression test for tracking type of locals for too long + def local_setting_cmp(five) + victim = 5 + five.define_singleton_method(:respond_to?) do |_, _| + victim = nil + end + + # +1 makes YJIT track that victim is a number and + # defined? calls respond_to? from above indirectly + unless (victim + 1) && defined?(five.something) + # Would return wrong result if we still think `five` is a number + victim.nil? + end + end + + local_setting_cmp(Object.new) + local_setting_cmp(Object.new) +} + assert_equal '18374962167983112447', %q{ # regression test for incorrectly discarding 32 bits of a pointer when it # comes to default values. |