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[Jussi Pakkanen <jussi.pakkanen@xxxxxxxxxxxxx>]

Public bug reported:

Running this:

MALLOC_CHECK_=3 G_SLICE=always-malloc /usr/bin/unity --replace

crashes immediately. This crash is not detected by the bug reporter, so
I made it create a core file. The backtrace is this:

Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `compiz --replace'.
Program terminated with signal 11, Segmentation fault.
#0  0x00007f3701dc869c in g_type_check_instance_is_a (type_instance=type_instance@entry=0x196e4f0, iface_type=iface_type@entry=80)
    at /build/buildd/glib2.0-2.34.0/./gobject/gtype.c:3964
3964	/build/buildd/glib2.0-2.34.0/./gobject/gtype.c: No such file or directory.
(gdb) bt
#0  0x00007f3701dc869c in g_type_check_instance_is_a (type_instance=type_instance@entry=0x196e4f0, iface_type=iface_type@entry=80)
    at /build/buildd/glib2.0-2.34.0/./gobject/gtype.c:3964
#1  0x00007f3701dabef6 in g_object_unref (_object=0x196e4f0) at /build/buildd/glib2.0-2.34.0/./gobject/gobject.c:2915
#2  0x00007f36feb08ec6 in _g_file_attribute_value_clear (attr=attr@entry=0x187b718) at /build/buildd/glib2.0-2.34.0/./gio/gfileattribute.c:252
#3  0x00007f36feb0cf10 in g_file_info_finalize (object=0x22f0970) at /build/buildd/glib2.0-2.34.0/./gio/gfileinfo.c:325
#4  0x00007f3701dac0a8 in g_object_unref (_object=0x22f0970) at /build/buildd/glib2.0-2.34.0/./gobject/gobject.c:3023
#5  0x00007f36feb2c128 in clear_op_res (simple=0x1e3c330) at /build/buildd/glib2.0-2.34.0/./gio/gsimpleasyncresult.c:257
#6  g_simple_async_result_finalize (object=0x1e3c330) at /build/buildd/glib2.0-2.34.0/./gio/gsimpleasyncresult.c:277
#7  0x00007f3701dac0a8 in g_object_unref (_object=0x1e3c330) at /build/buildd/glib2.0-2.34.0/./gobject/gobject.c:3023
#8  0x00007f36eb209422 in query_info_async_cb (proxy=<optimized out>, res=<optimized out>, user_data=0x1e3c110) at gdaemonfile.c:906
#9  0x00007f36feb2cf57 in g_simple_async_result_complete (simple=0x22ec2e0) at /build/buildd/glib2.0-2.34.0/./gio/gsimpleasyncresult.c:775
#10 0x00007f36feb872ea in reply_cb (connection=<optimized out>, res=<optimized out>, user_data=0x22ec2e0)
    at /build/buildd/glib2.0-2.34.0/./gio/gdbusproxy.c:2632
#11 0x00007f36feb2cf57 in g_simple_async_result_complete (simple=0x22deb20) at /build/buildd/glib2.0-2.34.0/./gio/gsimpleasyncresult.c:775
#12 0x00007f36feb7d772 in g_dbus_connection_call_done (source=<optimized out>, result=<optimized out>, user_data=0x19c3350)
    at /build/buildd/glib2.0-2.34.0/./gio/gdbusconnection.c:5339
#13 0x00007f36feb2cf57 in g_simple_async_result_complete (simple=0x22de990) at /build/buildd/glib2.0-2.34.0/./gio/gsimpleasyncresult.c:775
#14 0x00007f36feb2d059 in complete_in_idle_cb (data=<optimized out>) at /build/buildd/glib2.0-2.34.0/./gio/gsimpleasyncresult.c:787
#15 0x00007f3702d64ab5 in g_main_dispatch (context=0x1726ff0) at /build/buildd/glib2.0-2.34.0/./glib/gmain.c:2715
#16 g_main_context_dispatch (context=context@entry=0x1726ff0) at /build/buildd/glib2.0-2.34.0/./glib/gmain.c:3219
#17 0x00007f3702d64de8 in g_main_context_iterate (context=0x1726ff0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.34.0/./glib/gmain.c:3290
#18 0x00007f3702d651e2 in g_main_loop_run (loop=0x1727f30) at /build/buildd/glib2.0-2.34.0/./glib/gmain.c:3484
#19 0x000000000040270b in main (argc=2, argv=<optimized out>) at /build/buildd/compiz-0.9.8.4/src/main.cpp:262

** Affects: compiz (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1061540

Title:
  Compiz crashes immediately if run with memory checker

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