The size of integer required to hold a memory address is implementation-dependent. Therefore, casting a pointer (i.e. a memory address) to any
integral data type may result in data loss because the integral type is too small to hold the full address value.
When treating a memory address as integer type is absolutely required, you should be sure to use a large enough type to hold all the data.
Noncompliant code example
int *p;
int addr = ( int ) &p;
