Description of problem:

cairo_t in gtk3 draw event does not have a valid target. cairo_get_target(cr) returns null.

Version-Release number of selected component (if applicable):
gtk3-3.0.0-1.fc15.i686
cairo-1.10.2-3.fc15.i686

How reproducible:
Not sure. I work on firefox4 gtk3 port and it happens here.

Additional info:
gboolean
expose_event_cb(GtkWidget *widget, cairo_t *cr)
{
    cairo_surface_t* target = cairo_get_target(cr);
    assert(target);

- the code asserts here. But if I stop it in gdb, then:

(gdb) p	target
$1 = (cairo_surface_t *) 0x0
(gdb) p	/x cairo_get_target(cr)
$3 = 0xb3574680

It looks like the cairo surface is somehow created when the code is evaluated in gdb.