netcdf tst_fillbug {
dimensions:
	Time = UNLIMITED ; // (1 currently)
	X = 4 ;
	Y = 3 ;
variables:
	double Time(Time) ;
	float P(Time, Y, X) ;
data:

 Time = 3.14159 ;

 P =
  _, _, _, _,
  _, _, _, _,
  _, _, _, _ ;
}