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In this noncompliant code example, the function pointer fn_ptr refers to the function add(), which accepts three integer arguments. However, fn_ptr is specified to accept two integer arguments. Setting fn_ptr to refer to add() results in unexpected program behavior. This example also violates Void DCL35-C. Call functions with the correct number and type of arguments.
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int add(int x, int y, int z) {
return x + y + z;
}
int main(int argc, char *argv[]) {
int (*fn_ptr) (int, int);
int res;
fn_ptr = add;
res = fn_ptr(2, 3); /* Incorrect */
/* ... */
return 0;
}
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Failing to include type information for function declarators can result in unexpected or unintended program behavior.
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Related Vulnerabilities
Search for vulnerabilities resulting from the violation of this rule on the CERT website.
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