sweep_line_delete_edge (edge=0x7fff431f78c0, sweep=0x7fff431f75b0) at /build/buildd/cairo-1.13.0~20140204/src/cairo-bentley-ottmann-rectangular.c:558
sweep_line_delete (rectangle=0x7fff431f7898, sweep=0x7fff431f75b0) at /build/buildd/cairo-1.13.0~20140204/src/cairo-bentley-ottmann-rectangular.c:574
_cairo_bentley_ottmann_tessellate_rectangular (rectangles=rectangles@entry=0x7fff431f7780, num_rectangles=num_rectangles@entry=2, fill_rule=fill_rule@entry=CAIRO_FILL_RULE_WINDING, do_traps=do_traps@entry=0, container=container@entry=0x7fff431f8880) at /build/buildd/cairo-1.13.0~20140204/src/cairo-bentley-ottmann-rectangular.c:659
_cairo_bentley_ottmann_tessellate_boxes (in=in@entry=0x7fff431f8ad0, fill_rule=fill_rule@entry=CAIRO_FILL_RULE_WINDING, out=out@entry=0x7fff431f8880) at /build/buildd/cairo-1.13.0~20140204/src/cairo-bentley-ottmann-rectangular.c:877
fixup_unbounded (extents=extents@entry=0x7fff431f9c80, boxes=boxes@entry=0x7fff431f91f0, compositor=<optimized out>) at /build/buildd/cairo-1.13.0~20140204/src/cairo-traps-compositor.c:888