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Shouldn't be able to let-pattern-unwrap structs with dtors #3218

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bblum opened this issue Aug 17, 2012 · 1 comment

Contributor

bblum commented Aug 17, 2012

struct X {
    x: ~str;
    drop {
        error!("destructing wrapper");
        error!("value: %s", self.x);
    }
}

fn foo(+x: X) -> ~str {
    let X { x: y } = x;
    error!("unwrapped it");
    y
}

fn main() {
    let x = X { x: ~"hello" };
    let y = foo(x);
    error!("got inner");
    error!("contents: %s", y);
}

prints:

rust: ~"unwrapped it"
rust: ~"destructing wrapper"
Segmentation fault (core dumped)

The text was updated successfully, but these errors were encountered:

bblum mentioned this issue

Pattern-destructing a struct inside a ~-pointer violates linearity #3224

Closed

Contributor Author

bblum commented Aug 20, 2012

oops, dup of #3147

bblum closed this as completed

jaisnan pushed a commit to jaisnan/rust-dev that referenced this issue


          Update the rust toolchain to nightly-2024-06-11 (rust-lang#3225)

e922d73

Changes required due to:
- rust-lang/rust@a34c26e7ec Make body_owned_by return the body directly.
- rust-lang/rust@333458c2cb Uplift TypeRelation and Relate
- rust-lang/rust@459ce3f6bb Add an intrinsic for `ptr::metadata`
- rust-lang/rust@7e08f80b34 Split smir `Const` into `TyConst` and
`MirConst`
- rust-lang/rust@eb584a23bf offset_of: allow (unstably) taking the
offset of slice tail fields
- rust-lang/rust@16e8803579 Update cargo

Resolves: rust-lang#3218

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