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Hi, my name is JoÃl KrÃhemann and I'm developing Advanced Gtk+
Sequencer. I get the following backtrace out of gdb. `ags` should be
thread safe so perhaps it's more related to glib and the root cause
may be line 4 and: have_lock=0

I'll read the source code of glib for further investigation, assumed
someone knows the problem it would be nice to know it.

What about ignoring SIGABRT?

            7fff937d0000-7fff93fd0000 rw-p 00000000 00:00 0
            7fff93fd0000-7fff93fd1000 ---p 00000000 00:00 0
            7fff93fd1000-7fff947d1000 rw-p 00000000 00:00 0
            7fff947d1000-7fff947d2000 ---p 00000000 00:00 0
            7fff947d2000-7fff94fd2000 rw-p 00000000 00:00 0
            7fff94fd2000-7fff94fd3000 ---p 00000000 00:00 0
            7fff94fd3000-7fff957d3000 rw-p 00000000 00:00 0
            7fff957d3000-7fff957d4000 ---p 00000000 00:00 0
            7fff957d4000-7fff95fd4000 rw-p 00000000 00:00 0
            7fff95fd4000-7fff95fd5000 ---p 00000000 00:00 0
            7fff95fd5000-7fff967d5000 rw-p 00000000 00:00 0
            Program received signal SIGABRT, Aborted.
            [Switching to Thread 0x7fffeec86700 (LWP 15013)]
            0x00007ffff0303349 in __GI_raise (sig=sig@entry=6) at
            56 return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
            (gdb) make ags
            (gdb) bt
            #0 0x00007ffff0303349 in __GI_raise (sig=sig@entry=6) at
            #1 0x00007ffff0304748 in __GI_abort () at abort.c:89
            #2 0x00007ffff03411d4 in __libc_message
(do_abort=do_abort@entry=2, fmt=fmt@entry=0x7ffff04334b8 "*** Error in
`%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175
            #3 0x00007ffff034695e in malloc_printerr (action=3,
str=0x7ffff042f608 "free(): invalid size", ptr=<optimized out>) at
            #4 0x00007ffff0347666 in _int_free (av=<optimized out>,
p=<optimized out>, have_lock=0) at malloc.c:3837
            #5 0x00007ffff290dec8 in g_free () from
            #6 0x00007ffff2902518 in g_list_foreach () from
            #7 0x00007ffff2901ac8 in g_list_free_full () from
            #8 0x000000000046a74f in ags_audio_signal_finalize
(gobject=0x7fffdc18adc0) at ./src/ags/audio/ags_audio_signal.c:329
            #9 0x00007ffff2df1282 in g_object_unref () from
            #10 0x000000000046c752 in
ags_recall_recycling_set_property (gobject=0x7fffdc793cf0,
prop_id=<optimized out>, value=0x7fffeec83d50,
param_spec=0x7fffe17ed280) at

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