Bug #3925: setting Tempfile/StringIO to $std* before startup causes [BUG] Segmentation fault

• Status: Closed
• Assignee: -
• Target version: 2.0.0
• ruby -v: ruby 1.9.2p0 (2010-08-18 revision 29036) [i386-mswin32_100]

[arton (Akio Tajima)]

=begin
$stdout, in, errにTempfileやStringIOをセットするライブラリを-rで読み込むと[BUG]となります。
例）
#d.rb
require 'stringio'
$stdout = StringIO.new
#---------------------------------
を作って

$ruby -r./d -e 'puts "hello"'
-e: [BUG] Segmentation fault
ruby 1.9.2p0 (2010-08-18 revision 29036) [i386-mswin32_100]

-- control frame ----------
c:0001 p:0000 s:0002 b:0002 l:00122c d:00122c TOP

以下のパッチで少なくともTempfileは救えます。StringIOについてはset_encodingが無いので無理ですが。

--- io.c.org Sat Jul 24 19:38:33 2010
+++ io.c Mon Oct 11 03:47:30 2010
@@ -8652,9 +8652,9 @@ rb_stdio_set_default_encoding(void)
extern VALUE rb_stdin, rb_stdout, rb_stderr;
VALUE val = Qnil;

• rb_io_set_encoding(1, &val, rb_stdin);
• rb_io_set_encoding(1, &val, rb_stdout);
• rb_io_set_encoding(1, &val, rb_stderr);

• rb_funcall3(rb_stdin, rb_intern("set_encoding"), 1, &val);
• rb_funcall3(rb_stdout, rb_intern("set_encoding"), 1, &val);
• rb_funcall3(rb_stderr, rb_intern("set_encoding"), 1, &val);
  }

/*

-rで読み込むと自動的にデバッガ付き状態で動く（ターゲットにrequireを埋め込みたくない）ライブラリを開発していて気づきました。
=end

[naruse (Yui NARUSE)]

• Status changed from Open to Closed
• % Done changed from 0 to 100

=begin
This issue was solved with changeset r29435.
Akio, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

=end