ref: 4bf1a97b6f21f2728afe47c7a9f59909b9eb84c7 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; }