ref: 8b6a2d7d21c67db8b1fbc4eaabf3496bcc07941d 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; }