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, 19 insertions, 15 deletions

diff --git a/spec/ruby/core/string/element_set_spec.rb b/spec/ruby/core/string/element_set_spec.rb
index 34e122b055..608efc23b3 100644
--- a/spec/ruby/core/string/element_set_spec.rb
+++ b/spec/ruby/core/string/element_set_spec.rb
@@ -14,14 +14,16 @@ describe "String#[]= with Fixnum index" do
     a.should == "bamelo"
   end
 
-  it "taints self if other_str is tainted" do
-    a = "hello"
-    a[0] = "".taint
-    a.tainted?.should == true
-
-    a = "hello"
-    a[0] = "x".taint
-    a.tainted?.should == true
+  ruby_version_is ''...'2.7' do
+    it "taints self if other_str is tainted" do
+      a = "hello"
+      a[0] = "".taint
+      a.tainted?.should == true
+
+      a = "hello"
+      a[0] = "x".taint
+      a.tainted?.should == true
+    end
   end
 
   it "raises an IndexError without changing self if idx is outside of self" do
@@ -485,14 +487,16 @@ describe "String#[]= with Fixnum index, count" do
     a.should == "hellobob"
   end
 
-  it "taints self if other_str is tainted" do
-    a = "hello"
-    a[0, 0] = "".taint
-    a.tainted?.should == true
+  ruby_version_is ''...'2.7' do
+    it "taints self if other_str is tainted" do
+      a = "hello"
+      a[0, 0] = "".taint
+      a.tainted?.should == true
 
-    a = "hello"
-    a[1, 4] = "x".taint
-    a.tainted?.should == true
+      a = "hello"
+      a[1, 4] = "x".taint
+      a.tainted?.should == true
+    end
   end
 
   it "calls #to_int to convert the index and count objects" do