mirror of https://github.com/rust-lang/rust
19 lines
408 B
Rust
19 lines
408 B
Rust
fn get_pair(_a: &mut u32, _b: &mut u32) {}
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macro_rules! x10 {
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($($t:tt)*) => {
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$($t)* $($t)* $($t)* $($t)* $($t)*
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$($t)* $($t)* $($t)* $($t)* $($t)*
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}
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}
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#[allow(unused_assignments)]
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fn main() {
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let mut x = 1;
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get_pair(&mut x, &mut x);
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//~^ ERROR: cannot borrow `x` as mutable more than once at a time
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x10! { x10!{ x10!{ if x > 0 { x += 2 } else { x += 1 } } } }
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}
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