From 8586f021f8db193b746079aff7ee50461957f39d Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 28 Oct 2018 01:56:28 +0000
Subject: [PATCH] rdoc/parser/c.rb: ignore dynamically added methods

* lib/rdoc/parser/c.rb (RDoc::Parser::C#deduplicate_call_seq):
  skip dynamically added methods at runtime, because the class
  name is unknown and the defined methods are not accessible from
  that class.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65403 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/rdoc/parser/c.rb            |  1 +
 test/rdoc/test_rdoc_parser_c.rb | 13 +++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/lib/rdoc/parser/c.rb b/lib/rdoc/parser/c.rb
index 183538d54b..425ea11f63 100644
--- a/lib/rdoc/parser/c.rb
+++ b/lib/rdoc/parser/c.rb
@@ -217,6 +217,7 @@ class RDoc::Parser::C < RDoc::Parser
   def deduplicate_call_seq
     @methods.each do |var_name, functions|
       class_name = @known_classes[var_name]
+      next unless class_name
       class_obj  = find_class var_name, class_name
 
       functions.each_value do |method_names|
diff --git a/test/rdoc/test_rdoc_parser_c.rb b/test/rdoc/test_rdoc_parser_c.rb
index b8bdbca7fd..3d30d767df 100644
--- a/test/rdoc/test_rdoc_parser_c.rb
+++ b/test/rdoc/test_rdoc_parser_c.rb
@@ -1630,6 +1630,19 @@ Init_IO(void) {
     assert read_method.singleton
   end
 
+  def test_define_method_dynamically
+    content = <<-EOF
+void
+Init_foo(void)
+{
+    rb_define_singleton_method(obj, "foo", foo, -1);
+}
+    EOF
+
+    klass = util_get_class content, 'obj'
+    assert_nil klass
+  end
+
   def test_define_method_with_prototype
     content = <<-EOF
 static VALUE rb_io_s_read(int, VALUE*, VALUE);