40 lines
838 B
Rust
40 lines
838 B
Rust
// Various examples of structs whose fields are not well-formed.
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#![allow(dead_code)]
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trait Dummy<'a> {
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type Out;
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}
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impl<'a, T> Dummy<'a> for T
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where
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T: 'a,
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{
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type Out = ();
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}
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type RequireOutlives<'a, T> = <T as Dummy<'a>>::Out;
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enum Ref1<'a, T> {
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Ref1Variant1(RequireOutlives<'a, T>), //~ ERROR the parameter type `T` may not live long enough
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}
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enum Ref2<'a, T> {
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Ref2Variant1,
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Ref2Variant2(isize, RequireOutlives<'a, T>), //~ ERROR the parameter type `T` may not live long enough
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}
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enum RefOk<'a, T: 'a> {
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RefOkVariant1(&'a T),
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}
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// This is now well formed. RFC 2093
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enum RefIndirect<'a, T> {
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RefIndirectVariant1(isize, RefOk<'a, T>),
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}
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enum RefDouble<'a, 'b, T> {
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RefDoubleVariant1(&'a RequireOutlives<'b, T>),
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//~^ the parameter type `T` may not live long enough [E0309]
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}
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fn main() {}
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