ref: b7c1a1272d3b24c5fdc3246ed10c0dc9c6f8bd31 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; }