merge revision(s) c4794ed73ad348a61a7cfbe3da0a7eb49ba46eb9: [Backport #16641]

	Avoid jumping to a wrong destination

	when the next insn is already compiled by former branches.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67840 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 10 insertions, 0 deletions

diff --git a/test/ruby/test_jit.rb b/test/ruby/test_jit.rb
index 7fe58ea336..ca74c2a212 100644
--- a/test/ruby/test_jit.rb
+++ b/test/ruby/test_jit.rb
@@ -763,6 +763,16 @@ class TestJIT < Test::Unit::TestCase
     end;
   end
 
+  def test_jump_to_precompiled_branch
+    assert_eval_with_jit("#{<<~'begin;'}\n#{<<~'end;'}", stdout: ".0", success_count: 1, min_calls: 1)
+    begin;
+      def test(foo)
+        ".#{foo unless foo == 1}" if true
+      end
+      print test(0)
+    end;
+  end
+
   def test_clean_so
     if appveyor_mswin?
       skip 'Removing so file is failing on AppVeyor mswin due to Permission Denied.'