mirror of https://github.com/rust-lang/rust
23 lines
614 B
Rust
23 lines
614 B
Rust
// Test that free regions ordering only goes one way. That is,
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// we have `&'a Node<'b, T>`, which implies that `'a <= 'b`,
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// but not `'b <= 'a`. Hence, returning `&self.val` (which has lifetime
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// `'a`) where `'b` is expected yields an error.
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//
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// This test began its life as a test for issue #4325.
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struct Node<'b, T: 'b> {
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val: T,
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next: Option<&'b Node<'b, T>>
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}
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impl<'b, T> Node<'b, T> {
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fn get<'a>(&'a self) -> &'b T {
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match self.next { //~ ERROR lifetime may not live long enough
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Some(ref next) => next.get(),
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None => &self.val
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}
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}
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}
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fn main() {}
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