Compiler Warning (level 1) C4178

case constant 'constant' too big for the type of the switch expression

A case constant in a switch expression does not fit in the type to which it is assigned.

Example

// C4178.cpp
// compile with: /W1
int main()
{
    int i;  // maximum size of unsigned long int is 4294967295
    switch( i )
    {
        case 4294967295:   // OK
            break;
        case 4294967296:   // C4178
            break;
    }
 }