Re: [PATCH v2 0/3] Fix a segfault caused by regexec() being called on mmap()ed data

From: Johannes Schindelin <johannes.schindelin@gmx.de>
Date: Sep 8, 2016, 07:33 UTC
Message-ID: <alpine.DEB.2.20.1609080931250.129229@virtualbox>
In-Reply-To: <cover.1473319844.git.johannes.schindelin@gmx.de>

Hi,

On Thu, 8 Sep 2016, Johannes Schindelin wrote:

> We solve this by introducing a helper, regexec_buf(), that takes a
> pointer and a length instead of a NUL-terminated string.

BTW I should have clarified why I decided on another name than regexecn() (I had considered this even before reading Peff's proposed patch): the <n> in string functions suggest a limiting of NUL-terminated strings. In other words, if n = 100 and the provided pointer points to a NUL-terminated string of length 3, the *n function will treat it as a string of length 3.

That is not what regexec_buf() does: it ignores the NUL. Hence the different name.

Ciao, Dscho

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