From 33118bf77ba4c9e49e2c616e7c32911832e6c5e5 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 26 Sep 2017 12:21:51 +0000
Subject: Suppress warnings by other than self-assignments

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60033 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/test_parse.rb | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/test/ruby/test_parse.rb b/test/ruby/test_parse.rb
index 36ff776db9..769500a261 100644
--- a/test/ruby/test_parse.rb
+++ b/test/ruby/test_parse.rb
@@ -174,6 +174,7 @@ class TestParse < Test::Unit::TestCase
     end
 
     c = Class.new
+    c.freeze
     assert_nothing_raised(SyntaxError) do
       eval <<-END, nil, __FILE__, __LINE__+1
       if false
@@ -183,7 +184,6 @@ class TestParse < Test::Unit::TestCase
       END
     end
 
-    c = Class.new
     assert_raise(SyntaxError) do
       eval <<-END, nil, __FILE__, __LINE__+1
         $1 &= 1
@@ -698,15 +698,17 @@ x = __ENCODING__
   def test_invalid_char
     bug10117 = '[ruby-core:64243] [Bug #10117]'
     invalid_char = /Invalid char `\\x01'/
-    x = x = 1
+    x = 1
     assert_in_out_err(%W"-e \x01x", "", [], invalid_char, bug10117)
     assert_syntax_error("\x01x", invalid_char, bug10117)
     assert_equal(nil, eval("\x04x"))
+    assert_equal 1, x
   end
 
   def test_literal_concat
-    x = x = "baz"
+    x = "baz"
     assert_equal("foobarbaz", eval('"foo" "bar#{x}"'))
+    assert_equal("baz", x)
   end
 
   def test_unassignable
@@ -776,7 +778,7 @@ x = __ENCODING__
     $VERBOSE = true
     stderr = $stderr
     $stderr = StringIO.new("")
-    x = x = 1
+    x = 1
     assert_nil eval("x; nil")
     assert_nil eval("1+1; nil")
     assert_nil eval("1.+(1); nil")
@@ -789,6 +791,7 @@ x = __ENCODING__
     assert_nil eval("true; nil")
     assert_nil eval("false; nil")
     assert_nil eval("defined?(1); nil")
+    assert_equal 1, x
 
     assert_raise(SyntaxError) do
       eval %q(1; next; 2)
@@ -843,10 +846,11 @@ x = __ENCODING__
     end
 
     assert_nothing_raised do
-      x = x = "bar"
+      x = "bar"
       eval <<-END, nil, __FILE__, __LINE__+1
         :"foo#{"x"}baz" ? 1 : 2
       END
+      assert_equal "bar", x
     end
   end
 
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