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Re: run-jobs test fails for bash-3.0, hangs in jobs1.sub and trap.tests


From: Chet Ramey
Subject: Re: run-jobs test fails for bash-3.0, hangs in jobs1.sub and trap.tests
Date: Tue, 18 Jan 2005 17:35:28 -0500
User-agent: Mozilla Thunderbird 1.0 (Macintosh/20041206)

David Magerman wrote:
Configuration Information [Automatically generated, do not change]:
Machine: i686
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i686' 
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i686-pc-linux-gnu' 
-DCONF_VENDOR='pc' -DLOCALEDIR='/usr/local/products/bash/3.0/share/locale' 
-DPACKAGE='bash' -DSHELL -DHAVE_CONFIG_H  -I.  -I../bash-3.0 
-I../bash-3.0/include -I../bash-3.0/lib   -g -O2
uname output: Linux monstert24.rentec.com 2.6.8-24.5-bigsmp #1 SMP Wed Nov 17 
11:10:06 UTC 2004 i686 i686 i386 GNU/Linux
Machine Type: i686-pc-linux-gnu

Bash Version: 3.0
Patch Level: 0
Release Status: release

Description:

bash-3.0 fails the "run-jobs" test.  It hangs while running jobs1.sub.
bash-3.0 also hangs if I try using the shell after a few commands.  If
I kill the test manually, it subsequently fails on trap.tests.

Repeat-By:

Running "make tests" in the object directory after making bash-3.0.

I'd be happy to help you debug this problem if you can give me some
guidance.

This is probably the result of a bug in glibc.  I'll see if I can
dig up and forward you a patch submitted by Tim Waugh at Red Hat.

(The short story is that glibc defines WCONTINUED as a flag for
waitpid(), and bash tries to use it if available.  waitpid() rejects
it, and bash can never successfully wait for children.)

Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
( ``Discere est Dolere'' -- chet )
                                                Live...Laugh...Love
Chet Ramey, ITS, CWRU address@hidden http://tiswww.tis.cwru.edu/~chet/




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