Suppressing Valgrind errors from GTK+
Try this, worked for me:http://lug.rose-hulman.edu/code/projects/grits/repository/revisions/master/raw/src/gtk.suppression
I've uploaded my modified version here: paste.org/47748
Here's my valgrind command line, but I think setting G_SLICE and G_DEBUG doesn't help as much as editing the suppressions file:
valgrind --tool=memcheck --leak-check=full --num-callers=15 --suppressions=gtk.supp --log-file=vgdump ./runner
You may already have seen it as you use the GTK suppression file from Johan Dahlin, but there's a page about Valgrind and GTK on the GNOME wiki.