[Bug 199872] devel/glib20 Apps using glib 2.42.2 crashing with 'pthread_mutex_lock' abort

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=199872

            Bug ID: 199872
           Summary: devel/glib20  Apps using glib 2.42.2 crashing with
                    'pthread_mutex_lock' abort
           Product: Ports & Packages
           Version: Latest
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: gnome at FreeBSD.org
          Reporter: will_brokenbourgh at yahoo.com
          Assignee: gnome at FreeBSD.org
             Flags: maintainer-feedback?(gnome at FreeBSD.org)

Created attachment 156258
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=156258&action=edit
gdb output while debugging Thunar

Problem description:
- - -
Apps that use glib, such as Thunar, Firefox and Thunderbird are crashing with
the following error when performing operations with ports-mgmt/pkg:

  "GLib (gthread-posix.c): Unexpected error from C library during
'pthread_mutex_lock': Invalid argument.  Aborting."


How crash is produced:
- - -
* Thunar, Firefox and Thunderbird are started from lxpanel
* xterm is started from lxpanel, then following commands are executed
repeatedly:

    sudo pkg remove -y smplayer && \
    sudo pkg autoremove -y && \
    sudo pkg clean -ay && \
    sudo pkg install -y smplayer && \
    sudo ldconfig 

* In no discernible order, Thunar, Firefox and Thunderbird crash with SIGABRT
with the above error message.


Other information:
- - -
The gdb debug output of Thunar crashing is attached.

uname -a:
FreeBSD will-freebsd 10.1-RELEASE-p9 FreeBSD 10.1-RELEASE-p9 #0: Tue Apr  7
01:09:46 UTC 2015
root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64

dmesg at time of crash:
pid 941 (thunar), uid 1001: exited on signal 6 (core dumped)

Other apps running:
openbox, lxpanel, thunderbird, firefox and xterm

Hardware info:
  * AMD 6-core processor (dmesg: "AMD FX(tm)-6300 Six-Core Processor
(3511.78-MHz K8-class CPU)")
  * Asus M5A97 LE R2.0 motherboard
  * Radeon HD 5450 video card
  * 8 GB RAM
  * 500 GB 7,200 RPM Samsung hdd (dmesg: "SAMSUNG HD502HJ 1AJ10001")

Thank you! :-)

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