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27 lines
547 B
Rust
27 lines
547 B
Rust
#![feature(rustc_attrs)]
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macro_rules! width(
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($this:expr) => {
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$this.width.unwrap()
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//~^ ERROR cannot use `self.width` because it was mutably borrowed
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}
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);
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struct HasInfo {
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width: Option<usize>
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}
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impl HasInfo {
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fn get_size(&mut self, n: usize) -> usize {
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n
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}
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fn get_other(&mut self) -> usize {
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let r = &mut *self;
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r.get_size(width!(self))
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}
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// Above is like `self.get_size(width!(self))`, but it
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// deliberately avoids NLL's two phase borrow feature.
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}
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fn main() { }
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