Bug #11880: blank string makes Win32ole crush

• Status: Closed
• Assignee: suke (Masaki Suketa)
• Target version: -
• ruby -v: ruby 2.3.1p112 (2016-04-26 revision 54768) [x64-mingw32]
• Backport: 2.3: DONE

[arton (Akio Tajima)]

Win32OLEのオブジェクトに空文字列を与えるとクラッシュします。

再現スクリプト（method_missing側）

require 'win32ole'
shell = WIN32OLE.new('WScript.Shell')
shell.Popup('')

逆方向（COMコンポーネント側からの空文字列==SysAllocStringLen(0)のBSTRについても同様です。

添付のパッチで双方向とも修正できていると思います。

[suke (Masaki Suketa)]

• Status changed from Open to Closed

Applied in changeset r53322.

---

• ext/win32ole/win32ole.c (ole_vstr2wc, ole_variant2val): fix blank
  string conversion.
  [Bug #11880]
  Thanks Akio Tajima for the patch!

[nobu (Nobuyoshi Nakada)]

• Description updated (diff)

[personnel (Am I Who)]

• Assignee changed from suke (Masaki Suketa) to nobu (Nobuyoshi Nakada)
• ruby -v changed from ruby 2.3.0p0 (2015-12-25 revision 53290) [x64-mswin64_100] to ruby 2.3.1p112 (2016-04-26 revision 54768) [x64-mingw32]

[nobu (Nobuyoshi Nakada)]

• Assignee changed from nobu (Nobuyoshi Nakada) to suke (Masaki Suketa)
• Backport changed from 2.3: UNKNOWN to 2.3: REQUIRED

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.3: REQUIRED to 2.3: DONE

ruby_2_3 r54923 merged revision(s) 53322,53323.

[nobu (Nobuyoshi Nakada)]

• Has duplicate Bug #12346: Ruby 2.3.0 64-bit (mingw64-32) WIN32OLE_TYPE.typelibs seg faults on Windows 10 64-bit added

[suke (Masaki Suketa)]

• Is duplicate of Bug #12778: Segmentation Fault in win32ole on Ruby 2.3.1p112 [x64-mingw32] when creating Windows Share added