ref: 4eb0595fdcfb5064a5f81b1ffe4fb2de4c6a3dd3 dir: /tests/execute/0125-fundcl.c/
int f(int a), g(int a), a; int main() { return f(1) - g(1); } int f(int a) { return a; } int g(int a) { return a; }