Path: csiph.com!tncsrv06.tnetconsulting.net!news.snarked.org!news.linkpendium.com!news.linkpendium.com!panix!usenet.stanford.edu!not-for-mail From: Shaun Crampton Newsgroups: gnu.bash.bug Subject: set -e ignored in subshell if part of command list Date: Wed, 13 Nov 2019 10:24:23 +0000 Lines: 43 Approved: bug-bash@gnu.org Message-ID: References: NNTP-Posting-Host: lists.gnu.org Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" X-Trace: usenet.stanford.edu 1573656063 31056 209.51.188.17 (13 Nov 2019 14:41:03 GMT) X-Complaints-To: action@cs.stanford.edu To: bug-bash@gnu.org Envelope-to: bug-bash@gnu.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tigera.io; s=google; h=mime-version:from:date:message-id:subject:to; bh=ReSfzEhbAs8XcSY+pAbcULIYOT8O/VTqrI5OyrvJ5Gg=; b=J1U5WoNNxOgQ6UhUcSlOfAcg63CDKvf8xnqwfVYyv9HzO44rhATK6PLPer4cjMGJGh AIGGWAKwMuJl5faNfJC2njtNn/yeW1Xsqmm88uiun+NmTCiVHIDu1covd5dGb7pmfxx7 t8AAP+OpUpAEiwNE1+/Rkgqvi+4ISMbFm0i7Q= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=ReSfzEhbAs8XcSY+pAbcULIYOT8O/VTqrI5OyrvJ5Gg=; b=jjnPdTkmnbXNi2AZvIO3Q15qO6htZCL5NfCc14D+gXGM/WcYcBKaf3/7xEhQDfhN/A 5mwaiLeWw99v4/T/Eh0Vaf8UhW55EsAKQ5YcSjWB32X3Via/Mj1cM3eoXGFCbxs/ijmK fIilC7bWm1AaX8lQXqvUe1BS6paY4JtNvGkPlMHYQ4zI0racaxpJRG1WqX86r18k3Bg3 XHyvUg4Y0jKObNNenhSbQGwNjjRkQwRM31WwJNKhS7YvwK8OCSwB62+HxEeVVRA/0OcD cGDpIZsZ0p7HEQPKzCnHxbjKPBMIlzbNNpcqGpKZ1CWdeB3RA5D91Q89BCNoNswuBMid bKGw== X-Gm-Message-State: APjAAAX2hes0pz65gC6M8PJ5AQl9LGix8I7NTjsT6OGTHE9tivAK25C7 h8eaWbLv/vjSsOCbiYYnPTjg1xsM1FtVnVoN6ySlcZ9VoBYdwQ== X-Google-Smtp-Source: APXvYqw1juOFJu+FlldGlM4KEIXRyKetv68Zx6zE+rcgHTE4eahcGr+tLF3NWJximMts5AEsm2m5fRIt+VDcF2qha+k= X-Received: by 2002:a05:6102:318e:: with SMTP id c14mr1400401vsh.45.1573640673761; Wed, 13 Nov 2019 02:24:33 -0800 (PST) X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::e2a X-Mailman-Approved-At: Wed, 13 Nov 2019 09:41:02 -0500 X-BeenThere: bug-bash@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Bug reports for the GNU Bourne Again SHell List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Mailman-Original-Message-ID: Xref: csiph.com gnu.bash.bug:15668 Configuration Information [Automatically generated, do not change]: Machine: x86_64 OS: linux-gnu Compiler: gcc Compilation CFLAGS: -g -O2 -fdebug-prefix-map=/build/bash-LQgi2O/bash-5.0=. -fstack-protector-strong -Wformat -Werror=format-security -Wall -Wno-parentheses -Wno-format-security uname output: Linux shauns-laptop 5.1.16-050116-generic #201907031232 SMP Wed Jul 3 12:35:21 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux Machine Type: x86_64-pc-linux-gnu Bash Version: 5.0 Patch Level: 3 Release Status: release Description: I was trying to get a function to return early if a command fails by putting the body of the function in a subshell and using set -e inside the subshell. If I run a subshell on its own, this works, but when I try to combine it into a larger program, the set -e gets ignored. Repeat-By: Managed to boil it down to this smaller example: # On its own, subshell behaves as expected: $ ( set -ex; false; echo here ) + false # In a list, behaviour changes, "echo here" gets executed: $ ( set -ex; false; echo here ) && echo there + false + echo here here there # If the subshell is executed in the background, it works $ ( set -e; false; echo here ) & pid=$!; wait $pid && echo there [1] 26219 [1]+ Exit 1 ( set -e; false; echo here )