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backgrounded children forgotten

From: Aron Griffis
Subject: backgrounded children forgotten
Date: Sat, 10 Dec 2005 23:36:36 -0500
User-agent: Mutt/1.5.11

Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux-gnu
Compiler: x86_64-pc-linux-gnu-gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64' 
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-pc-linux-gnu' 
-DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL 
-DHAVE_CONFIG_H  -I.  -I. -I./include -I./lib   -march=nocona -O3 -pipe 
uname output: Linux vino 2.6.15-rc1 #1 SMP PREEMPT Thu Nov 17 10:10:29 EST 2005 
x86_64 Intel(R) Xeon(TM) CPU 3.20GHz GenuineIntel GNU/Linux
Machine Type: x86_64-pc-linux-gnu

Bash Version: 3.0
Patch Level: 16
Release Status: release

        When 2 processes are backgrounded inside $(...), bash forgets the first 
        one was a child of the shell.

        Note this needs to be a script, not cmdline, otherwise $! doesn't work.

        $ cat demo
            true &
            true &
            sleep 1
            wait $pid

        $ bash demo
        demo: line 13: wait: pid 25183 is not a child of this shell

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