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| From | Chet Ramey <chet.ramey@case.edu> |
| Newsgroups | gnu.bash.bug |
| Subject | Re: Bizarre interaction bug involving bash w/ lastpipe + Almquist 'wait' |
| Date | Fri, 7 Feb 2020 11:16:15 -0500 |
| Lines | 17 |
| Approved | bug-bash@gnu.org |
| Message-ID | <mailman.442.1581092193.2412.bug-bash@gnu.org> (permalink) |
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| To | Harald van Dijk <harald@gigawatt.nl>, Martijn Dekker <martijn@inlv.org>, DASH shell mailing list <dash@vger.kernel.org>, busybox <busybox@busybox.net>, Bug reports for the GNU Bourne Again SHell <bug-bash@gnu.org>, Robert Elz <kre@munnari.OZ.AU>, Jilles Tjoelker <jilles@stack.nl> |
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On 2/6/20 2:29 PM, Harald van Dijk wrote: > On 06/02/2020 16:12, Martijn Dekker wrote: >> When executing test.bash with dash, gwsh, Busybox ash, or FreeBSD sh, >> then test.ash simply waits forever on executing 'wait "$!"'. > > Nice test. bash leaves the process in a state where SIGCHLD is blocked, and > the various ash-based shells do not unblock it. Thanks for the investigation. Bash does leave SIGCHLD blocked in this exact set of circumstances (lastpipe+function+return at end of pipeline+exec). -- ``The lyf so short, the craft so long to lerne.'' - Chaucer ``Ars longa, vita brevis'' - Hippocrates Chet Ramey, UTech, CWRU chet@case.edu http://tiswww.cwru.edu/~chet/
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Re: Bizarre interaction bug involving bash w/ lastpipe + Almquist 'wait' Chet Ramey <chet.ramey@case.edu> - 2020-02-07 11:16 -0500
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