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, 18 insertions, 14 deletions

diff --git a/spec/ruby/core/array/pack/p_spec.rb b/spec/ruby/core/array/pack/p_spec.rb
index 857d403313..d7dff8a4da 100644
--- a/spec/ruby/core/array/pack/p_spec.rb
+++ b/spec/ruby/core/array/pack/p_spec.rb
@@ -15,14 +15,16 @@ describe "Array#pack with format 'P'" do
     ["hello"].pack("P").unpack("P5").should == ["hello"]
   end
 
-  it "taints the input string" do
-    input_string = "hello"
-    [input_string].pack("P")
-    input_string.tainted?.should be_true
-  end
+  ruby_version_is ''...'2.7' do
+    it "taints the input string" do
+      input_string = "hello"
+      [input_string].pack("P")
+      input_string.tainted?.should be_true
+    end
 
-  it "does not taint the output string in normal cases" do
-    ["hello"].pack("P").tainted?.should be_false
+    it "does not taint the output string in normal cases" do
+      ["hello"].pack("P").tainted?.should be_false
+    end
   end
 
   it "with nil gives a null pointer" do
@@ -42,14 +44,16 @@ describe "Array#pack with format 'p'" do
     ["hello"].pack("p").unpack("p").should == ["hello"]
   end
 
-  it "taints the input string" do
-    input_string = "hello"
-    [input_string].pack("p")
-    input_string.tainted?.should be_true
-  end
+  ruby_version_is ''...'2.7' do
+    it "taints the input string" do
+      input_string = "hello"
+      [input_string].pack("p")
+      input_string.tainted?.should be_true
+    end
 
-  it "does not taint the output string in normal cases" do
-    ["hello"].pack("p").tainted?.should be_false
+    it "does not taint the output string in normal cases" do
+      ["hello"].pack("p").tainted?.should be_false
+    end
   end
 
   it "with nil gives a null pointer" do