ref: 5c0bbb5ff6603cf20c4e3f4ec16dd7b60799cb85 dir: /tests/cc/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; }