From 2dd46bb82ffc4dff01d7ea70922f0e407acafb4e Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Thu, 16 May 2024 16:22:17 +0900
Subject: [Bug #20468] Fix safe navigation in `for` variable

---
 test/ruby/test_syntax.rb | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'test/ruby')

diff --git a/test/ruby/test_syntax.rb b/test/ruby/test_syntax.rb
index 7b894eee79..edc3a3cec3 100644
--- a/test/ruby/test_syntax.rb
+++ b/test/ruby/test_syntax.rb
@@ -1248,6 +1248,20 @@ eom
     assert_syntax_error("a&.x,=0", /multiple assignment destination/)
   end
 
+  def test_safe_call_in_for_variable
+    assert_valid_syntax("for x&.bar in []; end")
+    assert_separately([], "#{<<~"begin;"}\n#{<<~'end;'}")
+    begin;
+      foo = nil
+      for foo&.bar in [1]; end
+      assert_nil(foo)
+
+      foo = Struct.new(:bar).new
+      for foo&.bar in [1]; end
+      assert_equal(1, foo.bar)
+    end;
+  end
+
   def test_no_warning_logop_literal
     assert_warning("") do
       eval("true||raise;nil")
-- 
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