Comment 2 for bug 853760

StacktraceTop:
 thread_memory_magazine1_alloc (ix=<optimized out>, tmem=<optimized out>) at /build/buildd/glib2.0-2.29.92/./glib/gslice.c:797
 g_slice_alloc (mem_size=48) at /build/buildd/glib2.0-2.29.92/./glib/gslice.c:833
 g_slice_alloc0 (mem_size=48) at /usr/include/x86_64-linux-gnu/bits/string3.h:85
 g_signal_emit_valist (instance=0x1e1f170, signal_id=13, detail=0, var_args=0x7fff52916438) at /build/buildd/glib2.0-2.29.92/./gobject/gsignal.c:2967
 g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.29.92/./gobject/gsignal.c:3060