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From: Peter Stephenson <p.w.stephenson@ntlworld.com>
To: zsh-workers@zsh.org
Subject: Re: Two issues found with -fsanitize=undefined
Date: Mon, 21 Sep 2015 21:21:13 +0100	[thread overview]
Message-ID: <20150921212113.74706d86@ntlworld.com> (raw)
In-Reply-To: <20150921200413.GA8913@x4>

On Mon, 21 Sep 2015 22:04:13 +0200
Markus Trippelsdorf <markus@trippelsdorf.de> wrote:
> Yes:
> matchbuflen: (null) with no matchbuf: 0
> It looks like the issue doesn't happen with a -DDEBUG build.
> I've changed the DPUTS line to:
>  fprintf(stderr, "matchbuflen: %s with no matchbuf: %x", matchbuf, matchbuflen);

That's fine.  If matchbuf is NULL, matchbuflen *should* be 0.

I presume you're missing that

  DPUTS(matchbuflen, "matchbuflen with no matchbuf");

is (roughly) equivalent to

  if (matchbuflen)
     fprintf(stderr, "matchbuflen with no matcbuf");

pws



  reply	other threads:[~2015-09-21 20:21 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-17  7:57 Markus Trippelsdorf
2015-09-17 17:16 ` Bart Schaefer
2015-09-17 17:24   ` Markus Trippelsdorf
2015-09-17 17:41     ` Bart Schaefer
2015-09-19 19:57 ` Peter Stephenson
2015-09-19 20:18   ` Markus Trippelsdorf
2015-09-19 22:35     ` Peter Stephenson
2015-09-20  4:09       ` Bart Schaefer
2015-09-21 12:46   ` Peter Stephenson
2015-09-21 19:13 ` Peter Stephenson
2015-09-21 20:04   ` Markus Trippelsdorf
2015-09-21 20:21     ` Peter Stephenson [this message]
2015-09-21 20:34       ` Markus Trippelsdorf
2015-09-21 20:56         ` Bart Schaefer
2015-09-22  0:02           ` Markus Trippelsdorf

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