mirror of https://github.com/rust-lang/rust
27 lines
571 B
Rust
27 lines
571 B
Rust
//@ run-pass
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#![allow(unused_variables)]
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pub trait TryTransform {
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fn try_transform<F>(self, f: F)
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where
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Self: Sized,
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F: FnOnce(Self);
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}
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impl<'a, T> TryTransform for &'a mut T {
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fn try_transform<F>(self, f: F)
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where
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// The bug was that `Self: Sized` caused the lifetime of `this` to "extend" for all
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// of 'a instead of only lasting as long as the binding is used (for just that line).
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Self: Sized,
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F: FnOnce(Self),
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{
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let this: *mut T = self as *mut T;
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f(self);
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}
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}
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fn main() {
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}
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