Comment 12 for bug 916892

This is a stripped-down version of what unity does:

gcc -o /tmp/gdu_pool_crash gdu_pool_crash.c -Wall -g -O0 `pkg-config --cflags --libs glib-2.0 gio-2.0 gdu` && gdb /tmp/gdu_pool_crash

then run

while true; do sudo mount -o loop download/ubuntu/precise-desktop-amd64.iso /tmp/d; sudo umount /tmp/d; done

this reproduces the crash eventually.