ref: 2e11e73feafef4fd29df8e3a46e767da3b9a1877 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; }