nobu	2018-10-28 10:56:28 +0900 (Sun, 28 Oct 2018)

  New Revision: 65403

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=65403

  Log:
    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.

  Modified files:
    trunk/lib/rdoc/parser/c.rb
    trunk/test/rdoc/test_rdoc_parser_c.rb
Index: test/rdoc/test_rdoc_parser_c.rb
===================================================================
--- test/rdoc/test_rdoc_parser_c.rb	(revision 65402)
+++ test/rdoc/test_rdoc_parser_c.rb	(revision 65403)
@@ -1630,6 +1630,19 @@ Init_IO(void) { https://github.com/ruby/ruby/blob/trunk/test/rdoc/test_rdoc_parser_c.rb#L1630
     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);
Index: lib/rdoc/parser/c.rb
===================================================================
--- lib/rdoc/parser/c.rb	(revision 65402)
+++ lib/rdoc/parser/c.rb	(revision 65403)
@@ -217,6 +217,7 @@ class RDoc::Parser::C < RDoc::Parser https://github.com/ruby/ruby/blob/trunk/lib/rdoc/parser/c.rb#L217
   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|

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