[ruby/fiddle] Remove taint support (#21)

Ruby 2.7 deprecates taint and it no longer has an effect.
The lack of taint support should not cause a problem in
previous Ruby versions.
https://github.com/ruby/fiddle/commit/18d6fb6915

4 files changed, 1 insertions, 37 deletions

diff --git a/test/fiddle/test_func.rb b/test/fiddle/test_func.rb
index d170c59a75..ca89173766 100644
--- a/test/fiddle/test_func.rb
+++ b/test/fiddle/test_func.rb
@@ -11,18 +11,6 @@ module Fiddle
       assert_nil f.call(10)
     end
 
-    def test_syscall_with_tainted_string
-      f = Function.new(@libc['system'], [TYPE_VOIDP], TYPE_INT)
-      Thread.new {
-        $SAFE = 1
-        assert_raise(SecurityError) do
-          f.call("uname -rs".dup.taint)
-        end
-      }.join
-    ensure
-      $SAFE = 0
-    end
-
     def test_sinf
       begin
         f = Function.new(@libm['sinf'], [TYPE_FLOAT], TYPE_FLOAT)
diff --git a/test/fiddle/test_function.rb b/test/fiddle/test_function.rb
index eb8ef232e8..a58d7afcb1 100644
--- a/test/fiddle/test_function.rb
+++ b/test/fiddle/test_function.rb
@@ -98,7 +98,7 @@ module Fiddle
     end
 
     def test_no_memory_leak
-      prep = 'r = Fiddle::Function.new(Fiddle.dlopen(nil)["rb_obj_tainted"], [Fiddle::TYPE_UINTPTR_T], Fiddle::TYPE_UINTPTR_T); a = "a"'
+      prep = 'r = Fiddle::Function.new(Fiddle.dlopen(nil)["rb_obj_frozen"], [Fiddle::TYPE_UINTPTR_T], Fiddle::TYPE_UINTPTR_T); a = "a"'
       code = 'begin r.call(a); rescue TypeError; end'
       assert_no_memory_leak(%w[-W0 -rfiddle], "#{prep}\n1000.times{#{code}}", "10_000.times {#{code}}", limit: 1.2)
     end
diff --git a/test/fiddle/test_handle.rb b/test/fiddle/test_handle.rb
index c0fac39908..17f9c92a11 100644
--- a/test/fiddle/test_handle.rb
+++ b/test/fiddle/test_handle.rb
@@ -8,29 +8,6 @@ module Fiddle
   class TestHandle < TestCase
     include Fiddle
 
-    def test_safe_handle_open
-      Thread.new do
-        $SAFE = 1
-        assert_raise(SecurityError) {
-          Fiddle::Handle.new(LIBC_SO.dup.taint)
-        }
-      end.join
-    ensure
-      $SAFE = 0
-    end
-
-    def test_safe_function_lookup
-      Thread.new do
-        h = Fiddle::Handle.new(LIBC_SO)
-        $SAFE = 1
-        assert_raise(SecurityError) {
-          h["qsort".dup.taint]
-        }
-      end.join
-    ensure
-      $SAFE = 0
-    end
-
     def test_to_i
       handle = Fiddle::Handle.new(LIBC_SO)
       assert_kind_of Integer, handle.to_i
diff --git a/test/fiddle/test_pointer.rb b/test/fiddle/test_pointer.rb
index b1122aa9c5..5581c1dea7 100644
--- a/test/fiddle/test_pointer.rb
+++ b/test/fiddle/test_pointer.rb
@@ -79,7 +79,6 @@ module Fiddle
     def test_to_ptr_string
       str = "hello world"
       ptr = Pointer[str]
-      assert ptr.tainted?, 'pointer should be tainted'
       assert_equal str.length, ptr.size
       assert_equal 'hello', ptr[0,5]
     end