Comment 14 for bug 1100620

Version is: 3ca5275f5a4bfee0c399d0aea83567ee6f5639f4

And indeed, break exit/bt 10 gives:

#0 0x47abdcd6 in exit () from /lib/libc.so.6
#1 0x080ffb15 in hidgl_ensure_vertex_space (buffer=0x81cd4f0, count=94613) at hid/common/hidgl.c:258
#2 0x080ffe08 in fill_contour (contour=0x924f918) at hid/common/hidgl.c:840
#3 0x081005e9 in fill_polyarea (pa=0x8740090, clip_box=0xbfffca04, use_new_stencil=<value optimized out>)
    at hid/common/hidgl.c:958
#0 0x47abdcd6 in exit () from /lib/libc.so.6
#1 0x080ffb15 in hidgl_ensure_vertex_space (buffer=0x81cd4f0, count=94613) at hid/common/hidgl.c:258
#2 0x080ffe08 in fill_contour (contour=0x924f918) at hid/common/hidgl.c:840
#3 0x081005e9 in fill_polyarea (pa=0x8740090, clip_box=0xbfffca04, use_new_stencil=<value optimized out>)
    at hid/common/hidgl.c:958
#4 0x08100679 in hidgl_fill_pcb_polygon (poly=0x84200c8, clip_box=0xbfffca04) at hid/common/hidgl.c:979
#5 0x0812a227 in ghid_thindraw_pcb_polygon (gc=0x82d8f38, poly=0x84200c8, clip_box=0xbfffca04) at hid/gtk/gtkhid-gl.c:764
#6 0x080e902c in common_gui_draw_pcb_polygon (gc=0x82d8f38, polygon=0x84200c8, clip_box=0xbfffca04)
    at hid/common/draw_helpers.c:266
#7 0x08124040 in poly_callback_clearing (b=0x84200c8, cl=0xbfffc890) at hid/gtk/gtkhid-gl.c:1400
#8 0x080d74c0 in __r_search (node=0x84d9cd0, query=0xbfffca04, arg=0xbfffc764) at rtree.c:485
#9 0x080d756c in r_search (rtree=0x84ca7e0, query=0xbfffbcb8, check_region=0,
    found_rectangle=0x8123fe0 <poly_callback_clearing>, cl=0xbfffc890) at rtree.c:570
#10 0x08127996 in GhidDrawLayerGroup (screen=<value optimized out>, group=<value optimized out>) at hid/gtk/gtkhid-gl.c:1586

Will see if I can put together a simple .pcb that causes it.