62 lines
2.4 KiB
Plaintext
62 lines
2.4 KiB
Plaintext
note: external requirements
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--> $DIR/ty-param-closure-approximate-lower-bound.rs:24:24
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LL | twice(cell, value, |a, b| invoke(a, b));
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| ^^^^^^
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= note: defining type: generic::<T>::{closure#0} with closure args [
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i16,
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for<Region(BrAnon), Region(BrAnon)> extern "rust-call" fn((std::option::Option<std::cell::Cell<&'?1 &ReBound(DebruijnIndex(0), BoundRegion { var: 0, kind: BrAnon }) ()>>, &ReBound(DebruijnIndex(0), BoundRegion { var: 1, kind: BrAnon }) T)),
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(),
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]
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= note: number of external vids: 2
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= note: where T: '?1
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note: no external requirements
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--> $DIR/ty-param-closure-approximate-lower-bound.rs:22:1
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LL | fn generic<T>(value: T) {
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| ^^^^^^^^^^^^^^^^^^^^^^^
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= note: defining type: generic::<T>
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note: external requirements
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--> $DIR/ty-param-closure-approximate-lower-bound.rs:29:24
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LL | twice(cell, value, |a, b| invoke(a, b));
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| ^^^^^^
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= note: defining type: generic_fail::<T>::{closure#0} with closure args [
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i16,
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for<Region(BrAnon), Region(BrAnon)> extern "rust-call" fn((std::option::Option<std::cell::Cell<&'?1 &ReBound(DebruijnIndex(0), BoundRegion { var: 0, kind: BrAnon }) ()>>, &ReBound(DebruijnIndex(0), BoundRegion { var: 1, kind: BrAnon }) T)),
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(),
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]
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= note: late-bound region is '?2
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= note: number of external vids: 3
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= note: where T: '?1
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note: no external requirements
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--> $DIR/ty-param-closure-approximate-lower-bound.rs:28:1
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LL | fn generic_fail<'a, T>(cell: Cell<&'a ()>, value: T) {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: defining type: generic_fail::<T>
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error[E0309]: the parameter type `T` may not live long enough
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--> $DIR/ty-param-closure-approximate-lower-bound.rs:29:31
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LL | fn generic_fail<'a, T>(cell: Cell<&'a ()>, value: T) {
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| -- the parameter type `T` must be valid for the lifetime `'a` as defined here...
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LL | twice(cell, value, |a, b| invoke(a, b));
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| ^^^^^^^^^^^^ ...so that the type `T` will meet its required lifetime bounds
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help: consider adding an explicit lifetime bound
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LL | fn generic_fail<'a, T: 'a>(cell: Cell<&'a ()>, value: T) {
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| ++++
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0309`.
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