Use function prototypes (Draft)

If a function is implicitly declared, and it is not given enough arguments it will still pop the expected number from the stack. This could cause the program to crash.
The function could also be given too many arguments can cause a buffer overflow.

Non compliant code

function(1, 2);
...
void function(int one, int two, int three){
printf("args %d %d $d, one, two, three);
}

solution: Use function prototypes at the top of .c file or in a .h file so that a compiler error will occur if an incorrect number of arguments are used.

Compliant code

void function(int one, int two, int three); //at top of file or in .h file
...
function(1,2) //compiler error

Also using a compiler setting that checks for implicity declared function will prevent accidentily calling a function before it is declared.

Risk Assesment

References

• http://cwe.mitre.org/