ref: b5b9eac2d984b1f67cd71c4547a3afd7f2bb6dd4 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; }