ref: 1e3dd27b9b1dcd2c8f16a0f51effaade0e12c227 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; }