I have following code:

#include <iostream>

char add(char a, int b)
{
    return a + b;
}

int main(void)
{
    long long a = 100000000;
    long long b = 20;

    int x = add(a, b);

    std::cout << x << std::endl;

    return 0;
}

And I dont understand why does my code compile without any warnings.

Shouldn’t the GCC compiler with the -Wall flag give me a type mismatch error?