merge revision(s) 66819: [Backport #15532]

	ast.c: fix missing head part in dynamic literal

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@66851 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 12 insertions, 0 deletions

diff --git a/test/ruby/test_ast.rb b/test/ruby/test_ast.rb
index 23cd5618a0..1a897ef502 100644
--- a/test/ruby/test_ast.rb
+++ b/test/ruby/test_ast.rb
@@ -257,4 +257,16 @@ class TestAst < Test::Unit::TestCase
     assert_equal(:b, mid)
     assert_equal(:SCOPE, defn.type)
   end
+
+  def test_dstr
+    node = RubyVM::AbstractSyntaxTree.parse('"foo#{1}bar"')
+    _, _, body = *node.children
+    assert_equal(:DSTR, body.type)
+    head, body = body.children
+    assert_equal("foo", head)
+    assert_equal(:EVSTR, body.type)
+    body, = body.children
+    assert_equal(:LIT, body.type)
+    assert_equal([1], body.children)
+  end
 end