[Bug nptl/654] Cancelling nptl thread on dlclose() leads to application hangup

["alexei dot khlebnikov at datacon dot at" <sourceware-bugzilla at sources dot redhat dot com>]

------- Additional Comments From alexei dot khlebnikov at datacon dot at  2005-01-13 12:30 -------
I've tested the same testcase on another system, having kernel 2.4.20 and glibc
2.3.2 with linuxthreads. The program ran just fine. The test has been conducted
today, 2004-01-13.

The output:
---
$ ./run
loading ./libtestmod.so now
Constructor called
pureShutdown::func(void*) called
hi there, new thread is up and running, thread id is 16386
Constructor finished
= thread 16386 is still running...
= thread 16386 is still running...
= thread 16386 is still running...
= thread 16386 is still running...
unloading ./libtestmod.so now
Destructor called
modShutdown() called
bye, cancelling down thread 16386
running pthread_join(g_tid, &result) ...
returned from pthread_join(g_tid, &result) !
all's well that end's well
modShutdown() finished
Destructor finished
$
---

System information:
CPU: Intel(R) Xeon(TM) CPU 2.80GHz
Distribution: SuSE Linux 8.2
Kernel: 2.4.20-64GB-SMP, from the SuSE distribution

Glibc version:
---
$ /lib/libc.so.6
GNU C Library stable release version 2.3.2, by Roland McGrath et al.
Copyright (C) 2003 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Compiled by GNU CC version 3.3 20030226 (prerelease) (SuSE Linux).
Compiled on a Linux 2.4.20 system on 2003-03-13.
Available extensions:
        GNU libio by Per Bothner
        crypt add-on version 2.1 by Michael Glad and others
        linuxthreads-0.10 by Xavier Leroy
        NoVersion patch for broken glibc 2.0 binaries
        BIND-8.2.3-T5B
        libthread_db work sponsored by Alpha Processor Inc
        NIS(YP)/NIS+ NSS modules 0.19 by Thorsten Kukuk
Report bugs using the `glibcbug' script to <bugs@gnu.org>.
---

GCC version:
---
$ gcc -v
Reading specs from /usr/lib/gcc-lib/i486-suse-linux/3.3/specs
Configured with: ../configure --enable-threads=posix --prefix=/usr
--with-local-prefix=/usr/local --infodir=/usr/share/info --mandir=/usr/share/man
--libdir=/usr/lib --enable-languages=c,c++,f77,objc,java,ada --disable-checking
--enable-libgcj --with-gxx-include-dir=/usr/include/g++ --with-slibdir=/lib
--with-system-zlib --enable-shared --enable-__cxa_atexit i486-suse-linux
Thread model: posix
gcc version 3.3 20030226 (prerelease) (SuSE Linux)
---

Ld/Binutils version:
---
$ ld -v
GNU ld version 2.13.90.0.18 20030121 (SuSE Linux)
---


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http://sources.redhat.com/bugzilla/show_bug.cgi?id=654

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