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Tue, 29 Nov 2022 15:38:06 +0100 Received: from oxbe9.tb.ukmail.iss.as9143.net ([172.25.160.140]) by smtp3.tb.ukmail.iss.as9143.net with ESMTP id 01kLpKWYTYBhJ01kMpMGDA; Tue, 29 Nov 2022 15:38:06 +0100 X-Env-Mailfrom: p.w.stephenson@ntlworld.com X-Env-Rcptto: zsh-workers@zsh.org X-SourceIP: 172.25.160.140 X-CNFS-Analysis: v=2.4 cv=Vd8xfnl9 c=1 sm=1 tr=0 ts=6386194e cx=a_exe a=3Amxf2QPfMiVt6ICWsHjRQ==:117 a=1DWFKdCB1IcA:10 a=IkcTkHD0fZMA:10 a=ZjyAdWuDOD4A:10 a=o-CAJ8zO5-_6Ny5eqlkA:9 a=QEXdDO2ut3YA:10 X-Authenticated-Sender: p.w.stephenson@ntlworld.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ntlworld.com; s=meg.feb2017; t=1669732686; bh=efBSNLZxyQ8TLycdib0BJyGay4qEVCrabpRashSwDfw=; h=Date:From:To:In-Reply-To:References:Subject; b=K+htJgw5TJgisc2iBSFc7WZGBNk7jN73X7IPdk6+EHo2GkWXcNcehohC/PsxcngaW JDusBrvGqFl4X68wtmhd4cbADXdawrzKz1OJX8hFAORHja7pUARGzacVdErZPI9pfO laR15uh9PeoAN7Uy9qiZsGViPCQ4mUi/OnirPpnxUIrvE12hmL8iHksTSC520ruJ5P TDE7mpMqqQCJ7vhUz2NEJf5AwyPHi3K5mMVCBocn5ZswDvwO1jscIKvo7eYMB3T1kA ovhvoWhT2WOxalo43JMQE8bJ9d0AZpNwh1/pjeYQ2DWner61UUo50Nbfl9e05Enkeb GRFQXDyy/D94g== Date: Tue, 29 Nov 2022 14:38:05 +0000 (GMT) From: Peter Stephenson To: zsh-workers@zsh.org Message-ID: <351204342.6213761.1669732685914@mail.virginmedia.com> In-Reply-To: References: <20221118142717.t4elzrigjeizjm6w@chazelas.org> Subject: Re: [bug] busyloop upon $=var with NULs when $IFS contains both NUL and a byte > 0x7f MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Priority: 3 Importance: Normal X-Mailer: Open-Xchange Mailer X-Originating-IP: 147.161.224.167 X-Originating-Client: open-xchange-appsuite X-CMAE-Envelope: MS4xfPdIYwutjR9emCQn61HrRR70PLccIHTWh/RpfKGwHvHkBxcGJXmGc4mwMfbB+rG5jSjEbSaMhtPjEZx4SheM3Pwwz6hqF4NAk+CX5GOAq9Ai+bwTe91w Zk47COSuoT8SZ/N9V0Athegz9VjY7wDONxzYuJDQirZasi/oosv0CTC8FT9t/VTde0Nof9qrfv/sC+5rgnJcxKkMqySlLyvmsJo1C6djDmGfQBa3VmeAvfV5 X-Seq: 51084 Archived-At: X-Loop: zsh-workers@zsh.org Errors-To: zsh-workers-owner@zsh.org Precedence: list Precedence: bulk Sender: zsh-workers-request@zsh.org X-no-archive: yes List-Id: List-Help: , List-Subscribe: , List-Unsubscribe: , List-Post: List-Owner: List-Archive: > On 29/11/2022 14:27 Jun. T wrote: > 3834 for (; *s; r++) { > 3835 char *ie = itype_end(s, ISEP, 1); > 3836 if (ie != s) { > 3837 s = ie; > .... > 3840 } > 3841 (void)findsep(&s, NULL, 0); > .... > 3845 } > > Here, the pointer s already points to a ISEP (\x83\x20 = metafied Nul), > but itype_end() can't find the next ISEP (ie == s) due to the empty > ifs_wide, and findsep() does not move s because *s is already ISEP, > resulting in infinite-loop with the same s. I guess the obvious thing to do here is any time s doesn't move give up splitting at that point. pws