== O2 case5 ==
parse simulation: strtol("2147483648")=2147483648 -> u32 0x80000000 -> int cmd->refresh=-2147483648
case=5 vrefresh=0 hdisp=65536 vdisp=65536
umode validate_basic status=0 (0=MODE_OK)
vrefresh (htotal=65536 vtotal=65536): expect SIGFPE at drm_modes.c:796
[marker] VREFRESH: drm_modes.c:796  DIV_ROUND_CLOSEST(num, den)
exit=136
== O0 case5 ==
Floating point exception (core dumped)
parse simulation: strtol("2147483648")=2147483648 -> u32 0x80000000 -> int cmd->refresh=-2147483648
case=5 vrefresh=0 hdisp=65536 vdisp=65536
umode validate_basic status=0 (0=MODE_OK)
vrefresh (htotal=65536 vtotal=65536): expect SIGFPE at drm_modes.c:796
[marker] VREFRESH: drm_modes.c:796  DIV_ROUND_CLOSEST(num, den)
exit=136
Floating point exception (core dumped)
vfieldrate_rqd=2147483648(0x80000000) tmp1=2000 tmp2=960 hfreq_est=0 vsbp=0 vtotal_lines=480
cvt: tmp2c=964 den243=0
gtf: den459=0  den481(hfreq_est)=0
vfieldrate_rqd=2147483648(0x80000000) tmp1=2000 tmp2=962 hfreq_est=0 vsbp=0 vtotal_lines=481
cvt: tmp2c=966 den243=0
gtf: den459=2147483648  den481(hfreq_est)=0
vfieldrate_rqd=134217728(0x8000000) tmp1=6981321 tmp2=1204 hfreq_est=0 vsbp=0 vtotal_lines=602
cvt: tmp2c=1208 den243=3221225472
gtf: den459=3489660928  den481(hfreq_est)=0