mirror of https://github.com/rust-lang/rust
14 lines
579 B
Rust
14 lines
579 B
Rust
use std::cell::Cell;
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// this is overly conservative. The reset to `None` should clear `a` of all qualifications
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// while we could fix this, it would be inconsistent with `qualif_overwrite_2.rs`.
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// We can fix this properly in the future by allowing constants that do not depend on generics
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// to be checked by an analysis on the final value instead of looking at the body.
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const FOO: &Option<Cell<usize>> = {
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let mut a = Some(Cell::new(0));
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a = None; // sets `qualif(a)` to `qualif(a) | qualif(None)`
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&{a} //~ ERROR cannot refer to interior mutable
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};
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fn main() {}
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