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| From | p.debruijn@unilogic.nl |
| Newsgroups | gnu.bash.bug |
| Subject | loadable sleep exits immediately |
| Date | Tue, 12 Nov 2019 15:15:23 +0100 |
| Lines | 41 |
| Approved | bug-bash@gnu.org |
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Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux-gnu
Compiler: /opt/project/buildroot/output/host/bin/x86_64-buildroot-linux-gnu-gcc
Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64' -DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-buildroot-linux-gnu' -DCONF_VENDOR='buildroot' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL -DHAVE_CONFIG_H -I. -I. -I./include -I./lib -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -O2 -D_FORTIFY_SOURCE=1 -Wno-parentheses -Wno-format-security
uname output: Linux netbootbox 4.14.153 #6 SMP Tue Nov 12 14:20:37 CET 2019 x86_64 GNU/Linux
Machine Type: x86_64-buildroot-linux-gnu
Bash Version: 4.4
Patch Level: 23
Release Status: release
Description:
The loadable sleep function seems to exit almost immediately
in some specific cases.
Repeat-By:
The following minimal reproducable example illustrates the issue:
#!/bin/bash
enable -f /lib/bash/sleep sleep
aaa ()
{
type sleep
while true; do
echo -n "A"
dmesg >/dev/null &
sleep $1
done
}
while true; do
aaa 5 &
sleep 60
done
Workaround:
Use /bin/sleep
However this is unwatend for long running scripts, where it pollutes
the process list.
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loadable sleep exits immediately p.debruijn@unilogic.nl - 2019-11-12 15:15 +0100
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