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Positive coverage: borrow_check_expr / true

true
LineCoverageSource
──────── ("true")
45727(borrow_check_expr(_env, _assumptions, state, Expr::True, _places_live_on_exit) => (ScalarId::Bool, state))

27 tests exercised this rule:

Source location: tests/borrowck.rs:207 (all coverage from this test)

fn foo() -> u32 {
    let x: u32;
    if true {
        x = 1_u32;
    } else {
        x = 2_u32;
    }
    return x;
}
Proof tree
… (200 of 1050 nodes shown)

Source location: tests/borrowck.rs:233 (all coverage from this test)

fn foo() -> u32 {
    let x: u32 = 1_u32;
    if true {
        x = 2_u32;
    }
    return x;
}
Proof tree
… (200 of 1044 nodes shown)

Source location: tests/borrowck.rs:337 (all coverage from this test)

fn reborrow<'a>(a: &'a mut u8) -> &'a mut u8 {
    exists<'r0, 'r1> {
        if true {
            let b: &'r1 mut u8 = &'r0 mut *a;
            return b;
        }
        return a;
    }
}
Proof tree
… (200 of 1375 nodes shown)

Source location: tests/borrowck.rs:2158 (all coverage from this test)

fn min_problem_case_3<'a>(m: &'a mut Map) -> &'a mut Map {
    exists<'r0, 'r1> {
        let n: &'r0 mut Map = &'r0 mut *m;
        if true {
            return n;
        } else {
            let o: &'r1 mut Map = &'r1 mut *m;
            return o;
        }
    }
}
Proof tree
… (200 of 1350 nodes shown)

Source location: tests/borrowck.rs:2378 (all coverage from this test)

fn min_problem_case_3<'a>(m: &'a mut Map) -> &'a mut Map {
    exists<'r0, 'r1> {
        let n: &'r0 mut Map = &'r0 mut *m;
        if true {
        } else {
        }
        let o: &'r1 mut Map = &'r1 mut *m;
        return o;
    }
}
Proof tree
… (200 of 1321 nodes shown)

Source location: tests/borrowck.rs:2635 (all coverage from this test)

fn foo () -> u32 {
    exists<'l_p, 'l_q, 'loan_0, 'loan_1, 'loan_2, 'loan_3> {
        let a: u32 = 0_u32;
        let b: u32 = 0_u32;
        // In Rustc, the 1-tuple is needed for some reason
        // Niko does not 100% understand, else rustc is able to
        // see that this program is safe.
        let q: &'l_q mut u32 = &'loan_0 mut a;
        let p: &'l_p mut u32 = &'loan_1 mut a;
        if true {
            p = &'loan_1 mut a;
            q = &'loan_2 mut b;
        } else {
            p = &'loan_3 mut b;
        }
        *q = 1_u32;
        return *p;
    }
}
Proof tree
… (200 of 1567 nodes shown)

Source location: tests/borrowck.rs:3362 (all coverage from this test)

fn reborrow<'a>(a: &'a mut u8) -> &'a mut u8 {
    exists<'r0, 'r1, 'r2, 'r3> {
        if true {
            let b: &'r1 mut u8 = &'r0 mut *a;
            return b;
        } else { }

        let c: &'r3 mut u8 = &'r2 mut *a;
        return c;
    }
}
Proof tree
… (200 of 1340 nodes shown)

Source location: tests/borrowck.rs:3387 (all coverage from this test)

fn reborrow<'a>(a: &'a mut u8) -> &'a mut u8 {
    exists<'r0, 'r1, 'r2, 'r3> {
        // This creates an outlives constraint
        let b: &'r1 mut u8 = &'r0 mut *a;
        if true {
            return b;
        } else {
            // this means the loan remains live
        }

        // If the outlives constraint propagated here,
        // we would get an error.
        let c: &'r3 mut u8 = &'r2 mut *a;
        return c;
    }
}
Proof tree
… (200 of 1350 nodes shown)

Source location: tests/borrowck.rs:3456 (all coverage from this test)

fn reborrow<'a>(a: &'a mut u8) -> &'a mut u8 {
    exists<'r0, 'r1, 'r2, 'r3> {
        if true {
            let b: &'r1 mut u8 = &'r0 mut *a;
            return b;
        } else {
            let c: &'r3 mut u8 = &'r2 mut *a;
            return c;
        }
    }
}
Proof tree
… (200 of 1341 nodes shown)

Source location: tests/borrowck.rs:3808 (all coverage from this test)

fn remove_last_node_recursive<'a>(node: &'a mut List) -> u32 {
    exists<'r0> {
        let next: &'r0 mut List = next_of::<'r0>(&'r0 mut *node);
        if true {
            remove_last_node_recursive::<'r0>(next);
        } else {
            *node = List { value: 0_u32 };
        }
        return 0_u32;
    }
}
Proof tree
… (200 of 1436 nodes shown)

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;
    }
}

Proof trees omitted for the remaining 17 tests; each one is on its test’s page in Coverage by test.

Source location: tests/borrowck.rs:3917 (all coverage from this test)

fn no_control_flow() -> u32 {
    exists<'r0, 'r1, 'r2, 'r3> {
        let b: X = X { value: 0_u32 };
        let p: &'r0 mut X = &'r1 mut b;
        'l: loop {
            let now: &'r2 mut X = &'r2 mut *p;
            if true {
                let next: &'r3 mut X = next_of::<'r3>(&'r3 mut *now);
                p = next;
            } else {
                break 'l;
            }
        }
        return 0_u32;
    }
}

Source location: tests/borrowck.rs:3967 (all coverage from this test)

fn conditional() -> u32 {
    exists<'r0, 'r1, 'r2, 'r3> {
        let b: X = X { value: 0_u32 };
        let p: &'r0 mut X = &'r1 mut b;
        'l: loop {
            let now: &'r2 mut X = &'r2 mut *p;
            if true {
                if true {
                    let next: &'r3 mut X = next_of::<'r3>(&'r3 mut *now);
                    p = next;
                } else {
                }
            } else {
                break 'l;
            }
        }
        return 0_u32;
    }
}

Source location: tests/borrowck.rs:4056 (all coverage from this test)

fn conditional_with_indirection() -> u32 {
    exists<'r0, 'r1, 'r2, 'r3> {
        let b: X = X { value: 0_u32 };
        let p: &'r0 mut X = &'r1 mut b;
        'l: loop {
            let now: &'r2 mut X = &'r2 mut *p;
            if true {
                if true {
                    let next: &'r3 mut X = next_of::<'r3>(&'r3 mut *p);
                    p = next;
                } else {
                }
            } else {
                break 'l;
            }
        }
        return 0_u32;
    }
}

Source location: tests/borrowck.rs:4108 (all coverage from this test)

fn to_refs<'a>(list: &'a mut List) -> &'a mut u32 {
    exists<'r0, 'r1> {
        let result: &'a mut u32;
        'l: loop {
            result = &'r0 mut (*list).value;
            if true {
                let n: &'r1 mut List = next_from_field::<'r1>(&'r1 mut (*list).next);
                list = n;
            } else {
                return result;
            }
        }
    }
}

Source location: tests/borrowck.rs:4143 (all coverage from this test)

fn to_refs2<'a>(list: &'a mut List) -> &'a mut u32 {
    exists<'r0, 'r1> {
        let result: &'a mut u32;
        'l: loop {
            result = &'r0 mut (*list).value;
            if true {
                let n: &'r1 mut List = next_from_field::<'r1>(&'r1 mut (*list).next);
                list = n;
            } else {
                break 'l;
            }
        }
        return result;
    }
}

Source location: tests/borrowck.rs:4190 (all coverage from this test)

fn to_refs3<'a>(list: &'a mut List) -> &'a mut u32 {
    exists<'r0, 'r1> {
        let result: &'a mut u32;
        let cursor: &'a mut List = &'a mut *list;
        'l: loop {
            result = &'r0 mut (*cursor).value;
            if true {
                let n: &'r1 mut List = next_from_field::<'r1>(&'r1 mut (*cursor).next);
                cursor = n;
            } else {
                return result;
            }
        }
    }
}

Source location: tests/borrowck.rs:4233 (all coverage from this test)

fn next<'a>(d: &'a mut Decoder) -> &'a u32 {
    exists<'r0, 'r1> {
        'l: loop {
            let buf: &'r0 u32 = fill_buf::<'r0>(&'r0 mut (*d).buf_read);
            let s: &'r1 u32 = decode::<'r1>(buf);
            if true {
                return s;
            } else {
            }
        }
    }
}

Source location: tests/borrowck.rs:4356 (all coverage from this test)

fn next<'s>(f: &'s mut Filter) -> &'s mut u32 {
    exists<'r0, 'r1, 'r2> {
        'l: loop {
            let item: &'r0 mut u32 = iter_next::<'r0>(&'r0 mut (*f).iter);
            if true {
                let keep: bool = call_predicate::<'r1, 'r2>(&'r1 mut (*f).predicate, &'r2 *item);
                if keep {
                    return item;
                } else {
                }
            } else {
                break 'l;
            }
        }
        return no_item::<'s>();
    }
}

Source location: tests/borrowck.rs:4472 (all coverage from this test)

fn use_it<'a, 'b>() -> u32 {
    exists<'r0> {
        let v: Invariant<'r0> = create_invariant::<'r0>();
        if true {
            return sink::<'a, 'r0>(v);
        } else {
            return sink::<'b, 'r0>(v);
        }
    }
}

Source location: tests/borrowck.rs:4537 (all coverage from this test)

fn use_it_but_its_the_same_region<'a, 'b>() -> u32 where 'a: 'b, 'b: 'a {
    exists<'r0> {
        let v: Invariant<'r0> = create_invariant::<'r0>();
        if true {
            return sink::<'a, 'r0>(v);
        } else {
            return sink::<'b, 'r0>(v);
        }
    }
}

Source location: tests/codegen.rs:24 (all coverage from this test)

fn main() -> () {
    println!(1_i32);
    println!(true);
    println!(false);
}

Source location: tests/codegen.rs:95 (all coverage from this test)

fn main() -> () {
    let x: i32 = 1_i32;
    if true {
        println!(x);
    } else {
        println!(0_i32);
    }
}

Source location: tests/codegen.rs:251 (all coverage from this test)

fn main() -> () {
    let r: i32 = first::<i32, bool>(10_i32, true);
    println!(r);
}

Source location: tests/codegen.rs:318 (all coverage from this test)

fn main() -> () {
    let x: i32 = 0_i32;
    'a: loop {
        if true {
            println!(x);
            break 'a;
        } else {
            continue 'a;
        }
    }
}

Source location: tests/codegen.rs:356 (all coverage from this test)

fn main() -> () {
    'a: loop {
        if true {
            println!(1_i32);
            break 'a;
        } else {
            println!(2_i32);
            break 'a;
        }
    }
    println!(3_i32);
}

Source location: tests/mir_typeck.rs:123 (all coverage from this test)

fn foo () -> bool {
    return true;
}