diff options
Diffstat (limited to 'tests/ui/rfcs/rfc-2093-infer-outlives/regions-enum-not-wf.rs')
-rw-r--r-- | tests/ui/rfcs/rfc-2093-infer-outlives/regions-enum-not-wf.rs | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/tests/ui/rfcs/rfc-2093-infer-outlives/regions-enum-not-wf.rs b/tests/ui/rfcs/rfc-2093-infer-outlives/regions-enum-not-wf.rs new file mode 100644 index 000000000..8b491ee4e --- /dev/null +++ b/tests/ui/rfcs/rfc-2093-infer-outlives/regions-enum-not-wf.rs @@ -0,0 +1,39 @@ +// Various examples of structs whose fields are not well-formed. + +#![allow(dead_code)] + +trait Dummy<'a> { + type Out; +} +impl<'a, T> Dummy<'a> for T +where + T: 'a, +{ + type Out = (); +} +type RequireOutlives<'a, T> = <T as Dummy<'a>>::Out; + +enum Ref1<'a, T> { + Ref1Variant1(RequireOutlives<'a, T>), //~ ERROR the parameter type `T` may not live long enough +} + +enum Ref2<'a, T> { + Ref2Variant1, + Ref2Variant2(isize, RequireOutlives<'a, T>), //~ ERROR the parameter type `T` may not live long enough +} + +enum RefOk<'a, T: 'a> { + RefOkVariant1(&'a T), +} + +// This is now well formed. RFC 2093 +enum RefIndirect<'a, T> { + RefIndirectVariant1(isize, RefOk<'a, T>), +} + +enum RefDouble<'a, 'b, T> { + RefDoubleVariant1(&'a RequireOutlives<'b, T>), + //~^ the parameter type `T` may not live long enough [E0309] +} + +fn main() {} |