int * int multiplication prior to promotion to size_t causes error

[EricTittley]

fits/fitsbody.chas the line:

npix = tab->naxisn[0] * tab->naxisn[1]; That's size_t = int * int

If int * int is greater than INT_MAX (2147483647 = 2.1G) than the result is garbage.

Easy fix, just force the promotion with casts: npix = (size_t)tab->naxisn[0] * (size_t)tab->naxisn[1];

I've had to implement this for local users with large survey images. Best to make the change in the original source.

[ebertin]

Thanks for the heads up! A classic one!