From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23844 invoked by alias); 15 Jan 2013 16:02:12 -0000 Mailing-List: contact zsh-workers-help@zsh.org; run by ezmlm Precedence: bulk X-No-Archive: yes List-Id: Zsh Workers List List-Post: List-Help: X-Seq: 30969 Received: (qmail 21073 invoked from network); 15 Jan 2013 16:02:08 -0000 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on f.primenet.com.au X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, FREEMAIL_FROM,NML_ADSP_CUSTOM_MED,RCVD_IN_DNSWL_NONE,SPF_HELO_PASS, T_TO_NO_BRKTS_FREEMAIL autolearn=no version=3.3.2 Received-SPF: pass (ns1.primenet.com.au: SPF record at m.gmane.org designates 80.91.229.3 as permitted sender) X-Injected-Via-Gmane: http://gmane.org/ To: zsh-workers@zsh.org From: Christian Neukirchen Subject: SIGPIPE echoing to fifo exits zsh Date: Tue, 15 Jan 2013 16:43:31 +0100 Sender: chris@juno Message-ID: <87r4lmlae4.fsf@gmail.com> Mime-Version: 1.0 Content-Type: text/plain X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: dhcp-138-246-85-44.dynamic.eduroam.mwn.de User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.2 (gnu/linux) Hi, I noticed this thing: shell1% mkfifo /tmp/fifo shell1% while :; do head -1 /tmp/fifo; done shell2% gdb zsh (gdb) r -f juno% repeat 1000 echo a >/tmp/fifo Program received signal SIGPIPE, Broken pipe. 0x00007ffff71a7100 in __write_nocancel () from /usr/lib/libc.so.6 (gdb) bt #0 0x00007ffff71a7100 in __write_nocancel () from /usr/lib/libc.so.6 #1 0x00007ffff71410d3 in _IO_new_file_write () from /usr/lib/libc.so.6 #2 0x00007ffff7140fb2 in new_do_write () from /usr/lib/libc.so.6 #3 0x00007ffff71422c5 in __GI__IO_do_write () from /usr/lib/libc.so.6 #4 0x00007ffff7141680 in __GI__IO_file_sync () from /usr/lib/libc.so.6 #5 0x00007ffff713654b in fflush () from /usr/lib/libc.so.6 #6 0x000000000041a2dd in bin_print () #7 0x000000000041d117 in execbuiltin () #8 0x000000000042b2d1 in ?? () #9 0x000000000042b866 in ?? () #10 0x000000000042bdaf in ?? () #11 0x000000000042cf5f in execlist () #12 0x000000000044c354 in execfor () #13 0x000000000042a73b in ?? () #14 0x000000000042b866 in ?? () #15 0x000000000042bdaf in ?? () #16 0x000000000042cf5f in execlist () #17 0x000000000042d47d in execode () #18 0x000000000043d972 in loop () #19 0x0000000000440b1e in zsh_main () #20 0x00007ffff70eca15 in __libc_start_main () from /usr/lib/libc.so.6 #21 0x000000000040f3d1 in _start () Using /bin/echo (coreutils 8.20), the code works flawlessy (all lines get through the FIFO). Thanks, -- Christian Neukirchen http://chneukirchen.org