[rustc.git] / src / test / ui / nll / guarantor-issue-46974.rs

// Test that NLL analysis propagates lifetimes correctly through
// field accesses, Box accesses, etc.

fn foo(s: &mut (i32,)) -> i32 {
    let t = &mut *s; // this borrow should last for the entire function
    let x = &t.0;
    *s = (2,); //~ ERROR cannot assign to `*s`
    *x
}

fn bar(s: &Box<(i32,)>) -> &'static i32 {
    // FIXME(#46983): error message should be better
    &s.0 //~ ERROR lifetime may not live long enough
}

fn main() {
    foo(&mut (0,));
    bar(&Box::new((1,)));
}
Commit	Line	Data
2c00a5a8 XL	1	// Test that NLL analysis propagates lifetimes correctly through
	2	// field accesses, Box accesses, etc.
	3
2c00a5a8 XL	4	fn foo(s: &mut (i32,)) -> i32 {
	5	let t = &mut *s; // this borrow should last for the entire function
	6	let x = &t.0;
	7	s = (2,); //~ ERROR cannot assign to `s`
	8	*x
	9	}
	10
	11	fn bar(s: &Box<(i32,)>) -> &'static i32 {
	12	// FIXME(#46983): error message should be better
3c0e092e	13	&s.0 //~ ERROR lifetime may not live long enough
2c00a5a8 XL	14	}
	15
	16	fn main() {
	17	foo(&mut (0,));
	18	bar(&Box::new((1,)));
	19	}