x509store: emit warning if arguments are given to X509::Store.new

Anything passed to OpenSSL::X509::Store.new was always ignored. Let's
emit an explicit warning to not confuse users.

ext/openssl/ossl_x509store.c

@@ -192,8 +192,9 @@ ossl_x509store_initialize(int argc, VALUE *argv, VALUE self)
 {
     X509_STORE *store;
 
-/* BUG: This method takes any number of arguments but appears to ignore them. */
     GetX509Store(self, store);
+    if (argc != 0)
+        rb_warn("OpenSSL::X509::Store.new does not take any arguments");
 #if !defined(HAVE_OPAQUE_OPENSSL)
     /* [Bug #405] [Bug #1678] [Bug #3000]; already fixed? */
     store->ex_data.sk = NULL;

test/openssl/test_x509store.rb

@@ -16,14 +16,11 @@ def setup
     @ee2 = OpenSSL::X509::Name.parse("/DC=org/DC=ruby-lang/CN=EE2")
   end
 
-  def test_nosegv_on_cleanup
-    cert  = OpenSSL::X509::Certificate.new
-    store = OpenSSL::X509::Store.new
-    ctx   = OpenSSL::X509::StoreContext.new(store, cert, [])
-    EnvUtil.suppress_warning do
-      ctx.cleanup
-    end
-    ctx.verify
+  def test_store_new
+    # v2.3.0 emits explicit warning
+    assert_warning(/new does not take any arguments/) {
+      OpenSSL::X509::Store.new(123)
+    }
   end
 
   def test_add_file_path
@@ -255,6 +252,14 @@ def test_dup
     ctx = OpenSSL::X509::StoreContext.new(store)
     assert_raise(NoMethodError) { ctx.dup }
   end
+
+  def test_ctx_cleanup
+    # Deprecated in Ruby 1.9.3
+    cert  = OpenSSL::X509::Certificate.new
+    store = OpenSSL::X509::Store.new
+    ctx   = OpenSSL::X509::StoreContext.new(store, cert, [])
+    assert_warning(/cleanup/) { ctx.cleanup }
+  end
 end
 
 end