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[[!meta copyright="Copyright © 2013, 2014 Free Software Foundation, Inc."]]
[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
id="license" text="Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License, Version 1.2 or
any later version published by the Free Software Foundation; with no Invariant
Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
is included in the section entitled [[GNU Free Documentation
License|/fdl]]."]]"""]]
[[!tag faq/open_issues]]
[[!meta title="Assertion `__pthread_threads' failed"]]
Some applications don't themselves link against libpthread, but then load
plugins which do link against libpthread. This means internally switching from
single-threading to multi-threading, which is only supported since libc0.3
2.19-16~2. Previously, it would result in errors such as:
./pthread/../sysdeps/generic/pt-mutex-timedlock.c:70: __pthread_mutex_timedlock_internal: Assertion `__pthread_threads' failed.
This could be worked around by making the application link against libpthread (i.e. not only the plugin, but also the main binary), or without recompiling by explicitly pre-loading libpthread, for example:
$ LD_PRELOAD=/lib/i386-gnu/libpthread.so.0.3 [application]
But it should now be gone, simply upgrade libc0.3.
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