print("\n--- Test: try/catch across function boundaries ---");

// Throw in callee, catch in caller
func callee(x) { if (x == 0) throw {"message":"zero"}; return x + 1; }
var r1 = 0; var m1 = "";
try { r1 = callee(1); } catch (e) { m1 = e.message; }
try { callee(0); } catch (e) { m1 = e.message; }
assert(r1 == 2 && m1 == "zero", "throw in callee, catch in caller");

// Throw in nested callee
func inner() { throw {"message":"deep"}; }
func outer() { inner(); }
var m2 = "";
try { outer(); } catch (e) { m2 = e.message; }
assert(m2 == "deep", "nested callee throw");

// Finally in caller overrides callee throw
func thrower() { throw {"message":"boom"}; }
func wrapper() { try { thrower(); } finally { return 9; } }
assert(wrapper() == 9, "caller finally overrides");

print("try/catch across functions: PASS");