I have following declaration in my class.
public class MyClass
{
private const long SOME_VALUE= (10 * 1024 * 1024 * 1024); // 10 GB
....
}
However compiler is reporting following error
error CS0220: The operation overflows at compile time in checked mode
According to MSDN.
As far as I can tell, SOME_VALUE is in this range for long type. Any thoughts on why am I getting this compile time error?
Each of the individual values in the calculation are int so the compiler multiplies them together as ints, hence the overflow. The easiest solution is to mark one or all of them as a long using the L suffix, this will force the calculation to be done as a long:
private const long SOME_VALUE= 10L * 1024 * 1024 * 1024;
Add L suffix:
public class MyClass
{
private const long SOME_VALUE= (10L * 1024L * 1024L * 1024L); // 10 GB
....
}
Without L suffix (stands for long) compiler treats the expression as of int one and warns about integer overflow.
