Truncation because of Implicit Conversion

[Jocris Bitoon]

Hello,

Does CPPCheck flag a warning when a possible truncation might happen due to implicit conversion of data types?
Can it also be done for proprietary data types?

Thanks!

[Daniel Marjamäki]

Not currently.

I do not want to have "lint" warnings about it. For instance whenever a 32-bit type is implicitly converted to 16-bit.

like:

void f(unsigned int x) {
    if (x < 10)
        short y = x;  // <- don't warn here!
}

But when there is actual truncation, it sounds good to warn. I think it should be relatively simple to add such warnings.

example:

void f() {
   unsigned int x = 0x12345;
   short y = x; // <- warn
}