ref: 8105290a1e8cc4bda9b9bb7e9583b9282fcb1cb1 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; }