include <stdio.h>

@must_use
fn compute() -> int {
    return 42;
}

@deprecated("Use new_version instead")
fn old_function() {
    "deprecated!";
}

@inline
fn fast_add(a: int, b: int) -> int {
    return a + b;
}

@must_use @inline
fn combined() -> int {
    return 100;
}

fn optional_result() -> int {
    return 1;
}

test "attributes" {
    // This should NOT warn (result used)
    let x = compute();
    assert(x == 42, "compute() should return 42");
    
    // This should NOT warn (no must_use attribute)
    optional_result();
    
    // This SHOULD warn (result discarded on must_use function)
    compute();
    
    // Test inline works
    let sum = fast_add(1, 2);
    assert(sum == 3, "inline add failed");
    
    // Combined attributes
    let c = combined();
    assert(c == 100, "combined failed");
    
    "Attributes test completed";
}