Negative coverage: borrow_check_statement / expr / premise borrow_check_expr( env, assumptions, state, expr, places_live_on_exit ) => (_init_ty, state)

Premise at line 230. Observed failure causes: failed_judgment.

15 tests failed proving this premise:

Source location: tests/borrowck.rs:363 (all coverage from this test)

fn foo() -> u32 {
    let x: Pair;
    x.first = 1_u32;
    return 0_u32;
}

Source location: tests/borrowck.rs:2072 (all coverage from this test)

fn foo() -> i32 {
    exists<'r0, 'r1> {
        let v1: i32 = 0_i32;
        let v2: &'r0 mut i32 = &'r1 mut v1;
        // This should result in an error
        v1 = 1_i32;
        return *v2;
    }
}

Source location: tests/borrowck.rs:2110 (all coverage from this test)

fn foo() -> i32 {
    exists<'r0, 'r1> {
        let v1: i32 = 0_i32;
        let v2: &'r0 i32 = &'r1 v1;
        v1 = 1_i32;
        return *v2;
    }
}

Source location: tests/borrowck.rs:2414 (all coverage from this test)

fn foo<'a, 'b>(v1: &'a u32, v2: &'b u32) -> () {
    let output: &'b u32 = v2;
    loop {
        output = v1;
    }
}

Source location: tests/borrowck.rs:2702 (all coverage from this test)

fn foo() -> i32 {
    exists<'r0, 'r1> {
        let x: i32 = 0_i32;
        let r: &'r0 i32;
        'a: loop {
            r; // this *may* read from `y` in a previous iteration
            let y: i32 = 0_i32;
            r = &'r1 y;
            continue 'a;
        }
    }
}

Source location: tests/borrowck.rs:2899 (all coverage from this test)

fn foo() -> u32 {
    exists<'r0, 'r1> {
        let a: u32 = 22_u32;
        let p: &'r0 u32 = &'r1 a;
        'l: loop {
            if true {
                a = 23_u32;
                continue 'l;
            } else {
                break 'l;
            }
        }
        return *p;
    }
}

Source location: tests/borrowck.rs:3024 (all coverage from this test)

fn foo() -> u32 {
    exists<'r0, 'r1, 'r2> {
        let a: u32 = 22_u32;
        let b: u32 = 22_u32;
        let p: &'r0 u32 = &'r1 a;
        a = 23_u32;
        'l: loop {
            p = &'r2 b;
            break 'l;
        }
        return *p;
    }
}

Source location: tests/borrowck.rs:3256 (all coverage from this test)

fn foo() -> u32 {
    exists<'r0, 'r1> {
        let p: Point = Point { x: 0_u32, y: 0_u32 };
        let b1: &'r0 mut u32 = &'r1 mut p.x;
        p.x = 1_u32;
        return *b1;
    }
}

Source location: tests/borrowck.rs:3330 (all coverage from this test)

fn foo() -> u32 {
    exists<'r0> {
        let v1: u32 = 0_u32;
        let w: Wrapper<'r0> = Wrapper::<'r0> { value: &'r0 mut v1 };
        v1 = 1_u32;
        return *(w.value);
    }
}

Source location: tests/borrowck.rs:3484 (all coverage from this test)

fn foo() -> u32 {
    exists<'r0, 'r1, 'r2> {
        let x: u32 = 22_u32;
        let p: &'r1 u32 = &'r0 x;
        let q: &'r2 u32 = p;
        x = 1_u32;
        q;
        return 0_u32;
    }
}

Source location: tests/borrowck.rs:3648 (all coverage from this test)

fn foo() -> u32 {
    exists<'r0, 'r1> {
        let x: u32 = 22_u32;
        let helper: &'r1 u32 = &'r0 x;
        x = 1_u32;
        helper;
        return 0_u32;
    }
}

Proof trees omitted for the remaining 5 tests; each one is on its test’s page in Coverage by test.

Source location: tests/borrowck.rs:3855 (all coverage from this test)

fn remove_last_node_iterative<'a>(node: &'a mut List) -> u32 {
    exists<'r0, 'r1> {
        let cursor: &'r0 mut List = &'r0 mut *node;
        'l: loop {
            let next: &'r1 mut List = &'r1 mut *cursor;
            if true {
                cursor = next;
            } else {
                break 'l;
            }
        }
        *cursor = List { value: 0_u32 };
        return 0_u32;
    }
}

Source location: tests/borrowck.rs:4503 (all coverage from this test)

fn use_both<'a, 'b>() -> u32 {
    exists<'r0> {
        let v: Invariant<'r0> = create_invariant::<'r0>();
        let w: Invariant<'r0> = create_invariant::<'r0>();
        sink::<'a, 'r0>(v);
        sink::<'b, 'r0>(w);
        return 0_u32;
    }
}

Source location: tests/mir_typeck.rs:791 (all coverage from this test)

fn foo (v1: u32) -> u32 {
    let v2: Dummy = Dummy { value: 1_u32 };
    v2.nonexistent = 2_u32;
    return v1;
}

Source location: tests/mir_typeck.rs:820 (all coverage from this test)

fn foo (v1: u32) -> u32 {
    let v2: Dummy = Dummy { value: 1_u32 };
    v1.value = 2_u32;
    return v1;
}