ref: 1b51b30c2d7d831f8e8ef83b254fe6cd2052ff89 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; }