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.