Deprecate taint/trust and related methods, and make the methods no-ops

This removes the related tests, and puts the related specs behind
version guards.  This affects all code in lib, including some
libraries that may want to support older versions of Ruby.

1 files changed, 9 insertions, 7 deletions

diff --git a/spec/ruby/core/string/plus_spec.rb b/spec/ruby/core/string/plus_spec.rb
index b8e3bf0a4b..9f0db6427c 100644
--- a/spec/ruby/core/string/plus_spec.rb
+++ b/spec/ruby/core/string/plus_spec.rb
@@ -32,13 +32,15 @@ describe "String#+" do
     ("hello" + StringSpecs::MyString.new("")).should be_an_instance_of(String)
   end
 
-  it "taints the result when self or other is tainted" do
-    strs = ["", "OK", StringSpecs::MyString.new(""), StringSpecs::MyString.new("OK")]
-    strs += strs.map { |s| s.dup.taint }
-
-    strs.each do |str|
-      strs.each do |other|
-        (str + other).tainted?.should == (str.tainted? | other.tainted?)
+  ruby_version_is ''...'2.7' do
+    it "taints the result when self or other is tainted" do
+      strs = ["", "OK", StringSpecs::MyString.new(""), StringSpecs::MyString.new("OK")]
+      strs += strs.map { |s| s.dup.taint }
+
+      strs.each do |str|
+        strs.each do |other|
+          (str + other).tainted?.should == (str.tainted? | other.tainted?)
+        end
       end
     end
   end