New cast check

Hi,

I’m going to start working on a check on dangerous long casts, like pc lint warning 647.

e.g

int a = 105000;

int b = 25000;

long l = a*b; // possible truncation before conversion from ‘int’ to ‘long’

I’m thinking of adding this to the AnalyzeImplicitConversions function in SemaChecking.

I will also create a CheckExplicitConversions function for cases like.

(long) (n << 8)

Would this be a good place to put it?

//Anders