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add FIXME to Steal

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Niko Matsakis 2017-05-02 13:59:15 -04:00
parent 25be7983e8
commit 488b2a3e7b
1 changed files with 2 additions and 0 deletions
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src/librustc/ty/steal.rs
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@ -29,6 +29,8 @@ use std::mem;
/// Obviously, whenever you have a query that yields a `Steal` value, /// Obviously, whenever you have a query that yields a `Steal` value,
/// you must treat it with caution, and make sure that you know that /// you must treat it with caution, and make sure that you know that
/// -- once the value is stolen -- it will never be read from again. /// -- once the value is stolen -- it will never be read from again.
///
/// FIXME(#41710) -- what is the best way to model linear queries?
pub struct Steal<T> { pub struct Steal<T> {
value: RefCell<Option<T>> value: RefCell<Option<T>>
} }