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, 4 insertions, 12 deletions

diff --git a/ext/pathname/pathname.c b/ext/pathname/pathname.c
index 75d04d0aee..15f80d487e 100644
--- a/ext/pathname/pathname.c
+++ b/ext/pathname/pathname.c
@@ -110,7 +110,6 @@ path_initialize(VALUE self, VALUE arg)
     str = rb_obj_dup(str);
 
     set_strpath(self, str);
-    OBJ_INFECT(self, str);
     return self;
 }
 
@@ -134,15 +133,12 @@ path_freeze(VALUE self)
  * call-seq:
  *   pathname.taint -> obj
  *
- * Taints this Pathname.
- *
- * See Object.taint.
+ * Returns pathname.  This method is deprecated and will be removed in Ruby 3.2.
  */
 static VALUE
 path_taint(VALUE self)
 {
-    rb_call_super(0, 0);
-    rb_obj_taint(get_strpath(self));
+    rb_warning("Pathname#taint is deprecated and will be removed in Ruby 3.2.");
     return self;
 }
 
@@ -150,15 +146,12 @@ path_taint(VALUE self)
  * call-seq:
  *   pathname.untaint -> obj
  *
- * Untaints this Pathname.
- *
- * See Object.untaint.
+ * Returns pathname.  This method is deprecated and will be removed in Ruby 3.2.
  */
 static VALUE
 path_untaint(VALUE self)
 {
-    rb_call_super(0, 0);
-    rb_obj_untaint(get_strpath(self));
+    rb_warning("Pathname#untaint is deprecated and will be removed in Ruby 3.2.");
     return self;
 }
 
@@ -308,7 +301,6 @@ path_sub_ext(VALUE self, VALUE repl)
     }
     str2 = rb_str_subseq(str, 0, ext-p);
     rb_str_append(str2, repl);
-    OBJ_INFECT(str2, str);
     return rb_class_new_instance(1, &str2, rb_obj_class(self));
 }