Package: zsh Version: 5.8-6+b1 Severity: normal Forwarded: https://www.zsh.org/mla/workers/2021/msg01370.html
With zsh 5.8, the SIGPIPE trap is not executed when the builtin that generates it is the last command of a subshell: zira% ( trap 'echo PIPE >&2' PIPE; sleep 1; pwd; ) | : zsh: write error: broken pipe With an additional command (builtin), this is OK: zira% ( trap 'echo PIPE >&2' PIPE; sleep 1; pwd; :; ) | : zsh: write error: broken pipe PIPE I wonder whether this is related to the (undocumented?) optimization that exec's the last command of a subshell / shell script (though this is not applicable to builtins). This also occurs with zsh 5.7.1-1 in Debian 10 (buster). There is the same issue with mksh, but not with dash, ksh93, bash and yash. -- Package-specific info: Packages which provide vendor completions: Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-================-=============-============-======================================================================= ii curl 7.74.0-1.3+b1 amd64 command line tool for transferring data with URL syntax ii mercurial-common 5.6.1-4 all easy-to-use, scalable distributed version control system (common files) ii pass 1.7.4-1 all lightweight directory-based password manager ii pulseaudio 14.2-2 amd64 PulseAudio sound server ii qpdf 10.1.0-1 amd64 tools for transforming and inspecting PDF files ii systemd 247.3-5 amd64 system and service manager ii udev 247.3-5 amd64 /dev/ and hotplug management daemon ii vlc-bin 3.0.16-1 amd64 binaries from VLC dpkg-query: no path found matching pattern /usr/share/zsh/vendor-functions/ -- System Information: Debian Release: 11.0 APT prefers unstable-debug APT policy: (500, 'unstable-debug'), (500, 'testing-security'), (500, 'stable-updates'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 5.10.0-8-amd64 (SMP w/12 CPU threads) Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=POSIX, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages zsh depends on: ii libc6 2.31-13 ii libcap2 1:2.44-1 ii libtinfo6 6.2+20201114-2 ii zsh-common 5.8-6 Versions of packages zsh recommends: ii libgdbm6 1.19-2 ii libncursesw6 6.2+20201114-2 ii libpcre3 2:8.39-13 Versions of packages zsh suggests: ii zsh-doc 5.8-6 -- no debconf information -- Vincent Lefèvre <vinc...@vinc17.net> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
