From: nagachika00@...
Date: 2014-02-16T15:54:59+00:00
Subject: [ruby-dev:47969] [Backport200 - Backport #9484] [Closed] Fix segfault at unpacking modified String

Issue #9484 has been updated by Tomoyuki Chikanaga.

Status changed from Assigned to Closed
% Done changed from 0 to 100

Applied in changeset r45005.

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merge revision(s) r44803: [Backport #9484]

	* string.c (rb_str_modify_expand): enable capacity and disable
	  assocation with packed objects when setting capa, so that
	  pack("p") string fails to unpack properly after modified.

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Backport #9484: Fix segfault at unpacking modified String
https://bugs.ruby-lang.org/issues/9484#change-45199

* Author: Nobuyoshi Nakada
* Status: Closed
* Priority: Normal
* Assignee: Tomoyuki Chikanaga
* Category: 
* Target version: 
* ruby -v: 2.0.0p394
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trunkではr44803で修正済みですが、1.9.3以降2.1まで `([""].pack("p")<<"a").unpack("p")` でSEGVします。
1.9.2までは起きないようです。



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