Comment 6 for bug 918791

Under gdb I get:

Program received signal SIGSEGV, Segmentation fault.
set_bit (addr=<optimized out>, nr=-4) at ./bitops.h:122
122 ./bitops.h: No such file or directory.
(gdb) where
#0 set_bit (addr=<optimized out>, nr=-4) at ./bitops.h:122
#1 vnc_dpy_update (ds=<optimized out>, x=-64, y=<optimized out>, w=64, h=<optimized out>) at ui/vnc.c:427
#2 0x0000555555652c4f in dpy_update (s=0x5555567708c0, h=24, w=66, y=575, x=-66)
    at /build/buildd/qemu-kvm-1.0+noroms/console.h:240
#3 vmsvga_update_rect (h=24, w=66, y=575, x=-66, s=0x55555675d9a0) at /build/buildd/qemu-kvm-1.0+noroms/hw/vmware_vga.c:325
#4 vmsvga_update_rect_flush (s=0x55555675d9a0) at /build/buildd/qemu-kvm-1.0+noroms/hw/vmware_vga.c:358
#5 vmsvga_update_display (opaque=0x55555675d9a0) at /build/buildd/qemu-kvm-1.0+noroms/hw/vmware_vga.c:961
#6 0x00005555556a0705 in vnc_refresh (opaque=0x7fffabe9e010) at ui/vnc.c:2475
#7 0x0000555555673837 in qemu_run_timers (clock=0x555556324150) at qemu-timer.c:420
#8 0x00005555556739b5 in qemu_run_timers (clock=<optimized out>) at qemu-timer.c:405
#9 qemu_run_all_timers () at qemu-timer.c:483
#10 0x0000555555655372 in main_loop_wait (nonblocking=<optimized out>) at main-loop.c:468
#11 0x00005555555c060f in main_loop () at /build/buildd/qemu-kvm-1.0+noroms/vl.c:1482
#12 main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at /build/buildd/qemu-kvm-1.0+noroms/vl.c:3523