mirror of https://github.com/rust-lang/rust
21 lines
371 B
Rust
21 lines
371 B
Rust
//@ check-pass
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enum Sexpression {
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Num(()),
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Cons(&'static mut Sexpression)
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}
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fn causes_error_in_ast(mut l: &mut Sexpression) {
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loop { match l {
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&mut Sexpression::Num(ref mut n) => {},
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&mut Sexpression::Cons(ref mut expr) => {
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l = &mut **expr;
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}
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}}
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}
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fn main() {
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causes_error_in_ast(&mut Sexpression::Num(()));
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}
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