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Re: gawk: free_wstr() invalid write

From: Dmitry V. Levin
Subject: Re: gawk: free_wstr() invalid write
Date: Mon, 18 Dec 2006 19:34:56 +0300 
On Mon, Dec 18, 2006 at 11:03:30AM -0500, Andrew J. Schorr wrote:
> On Mon, Dec 18, 2006 at 06:27:52PM +0300, Dmitry V. Levin wrote:
> > free_wstr() zeroes wstptr and wstlen pointers even if WSTRCUR flag is not
> > set, which is wrong and may lead to invalid write, similar to invalid free
> > in str2wstr().
> > 
> > Proposed fix is attached.
> 
> FYI, your str2str and free_wstr patches seem correct to me,
> and they resemble the code in the xgawk source tree:
> 
>    http://sourceforge.net/projects/xmlgawk/

Why these fixes are not in gawk-stable tree yet? :)


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