https://git.ruby-lang.org/ruby.git/commit/?id=4a2662ae8b

From 4a2662ae8b9f64346af82551fdd6756e7497e2f1 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Fri, 8 Jul 2022 11:20:02 +0900
Subject: [Bug #18890] Suppress warnings and fix the message

```
test/ruby/test_parse.rb:1384: warning: assigned but unused variable - obj
test/ruby/test_pattern_matching.rb:1162: warning: unused literal ignored
test/ruby/test_pattern_matching.rb:1165: warning: unused literal ignored
test/ruby/test_pattern_matching.rb:1161: warning: assigned but unused variable - a
test/ruby/test_pattern_matching.rb:1164: warning: assigned but unused variable - b
```

And a newline should be significant here.
---
 test/ruby/test_parse.rb            |  2 ++
 test/ruby/test_pattern_matching.rb | 19 +++++++++++++------
 2 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/test/ruby/test_parse.rb b/test/ruby/test_parse.rb
index 16764a2146..4488ea620e 100644
--- a/test/ruby/test_parse.rb
+++ b/test/ruby/test_parse.rb
@@ -1394,6 +1394,7 @@ x = __ENCODING__ https://github.com/ruby/ruby/blob/trunk/test/ruby/test_parse.rb#L1394
                 1
     end;
     assert_equal(expected, eval(code))
+    assert_equal(expected, obj.arg)
 
     assert_valid_syntax(code = "#{<<~"do;"}\n#{<<~'end;'}")
     do;
@@ -1401,6 +1402,7 @@ x = __ENCODING__ https://github.com/ruby/ruby/blob/trunk/test/ruby/test_parse.rb#L1402
                   1
     end;
     assert_equal(expected, eval(code))
+    assert_equal(expected, obj.arg)
   end
 
 =begin
diff --git a/test/ruby/test_pattern_matching.rb b/test/ruby/test_pattern_matching.rb
index b8c445c806..36731e14f9 100644
--- a/test/ruby/test_pattern_matching.rb
+++ b/test/ruby/test_pattern_matching.rb
@@ -1155,19 +1155,26 @@ END https://github.com/ruby/ruby/blob/trunk/test/ruby/test_pattern_matching.rb#L1155
       end
     end
 
-    [{a: 42}, {b: 42}].each do |i|
-      assert_block('newline should be insignificant after pattern label') do
+    bug18890 = assert_warning(/(?:.*:[47]: warning: unused literal ignored\n){2}/) do
+      eval("#{<<~';;;'}")
+      proc do |i|
         case i
         in a:
-          0
-          true
+          0 # line 4
+          a
         in "b":
-          0
-          true
+          0 # line 7
+          b
         else
           false
         end
       end
+      ;;;
+    end
+    [{a: 42}, {b: 42}].each do |i|
+      assert_block('newline should be significant after pattern label') do
+        bug18890.call(i)
+      end
     end
 
     assert_syntax_error(%q{
-- 
cgit v1.2.1


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