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timeout: ensure --foreground -k exits with status 137

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* src/timeout.c (main): Propagate the killed status from the child.
* doc/coreutils.texi (timeout invocation): Remove the
description of the --foreground specific handling of SIGKILL,
now that it's consistent with the default mode of operation.
* tests/misc/timeout.sh: Add a test case.
* NEWS: Mention the change in behavior.
Fixes https://bugs.gnu.org/51135
This commit is contained in:
Pádraig Brady
2021-10-12 14:32:57 +01:00
parent d085678bd6
commit 0750fcdf34
4 changed files with 15 additions and 3 deletions
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tests/misc/timeout.sh
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@@ -42,7 +42,10 @@ returns_ 124 timeout --preserve-status .1 sleep 10 && fail=1
# kill delay. Note once the initial timeout triggers,
# the exit status will be 124 even if the command
# exits on its own accord.
# exit status should be 128+KILL
returns_ 124 timeout -s0 -k1 .1 sleep 10 && fail=1
# Ensure a consistent exit status with --foreground
returns_ 124 timeout --foreground -s0 -k1 .1 sleep 10 && fail=1
# Ensure 'timeout' is immune to parent's SIGCHLD handler
# Use a subshell and an exec to work around a bug in FreeBSD 5.0 /bin/sh.