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|
note: external requirements
--> $DIR/ty-param-closure-approximate-lower-bound.rs:24:24
|
LL | twice(cell, value, |a, b| invoke(a, b));
| ^^^^^^
|
= note: defining type: generic::<T>::{closure#0} with closure substs [
i16,
for<Region(BrAnon(None)), Region(BrAnon(None))> extern "rust-call" fn((std::option::Option<std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BoundRegion { var: 0, kind: BrAnon(None) }) ()>>, &ReLateBound(DebruijnIndex(0), BoundRegion { var: 1, kind: BrAnon(None) }) T)),
(),
]
= note: number of external vids: 2
= note: where T: '_#1r
note: no external requirements
--> $DIR/ty-param-closure-approximate-lower-bound.rs:22:1
|
LL | fn generic<T>(value: T) {
| ^^^^^^^^^^^^^^^^^^^^^^^
|
= note: defining type: generic::<T>
note: external requirements
--> $DIR/ty-param-closure-approximate-lower-bound.rs:29:24
|
LL | twice(cell, value, |a, b| invoke(a, b));
| ^^^^^^
|
= note: defining type: generic_fail::<T>::{closure#0} with closure substs [
i16,
for<Region(BrAnon(None)), Region(BrAnon(None))> extern "rust-call" fn((std::option::Option<std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BoundRegion { var: 0, kind: BrAnon(None) }) ()>>, &ReLateBound(DebruijnIndex(0), BoundRegion { var: 1, kind: BrAnon(None) }) T)),
(),
]
= note: late-bound region is '_#2r
= note: number of external vids: 3
= note: where T: '_#1r
note: no external requirements
--> $DIR/ty-param-closure-approximate-lower-bound.rs:28:1
|
LL | fn generic_fail<'a, T>(cell: Cell<&'a ()>, value: T) {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: defining type: generic_fail::<T>
error[E0309]: the parameter type `T` may not live long enough
--> $DIR/ty-param-closure-approximate-lower-bound.rs:29:31
|
LL | twice(cell, value, |a, b| invoke(a, b));
| ^^^^^^^^^^^^ ...so that the type `T` will meet its required lifetime bounds
|
help: consider adding an explicit lifetime bound...
|
LL | fn generic_fail<'a, T: 'a>(cell: Cell<&'a ()>, value: T) {
| ++++
error: aborting due to previous error
For more information about this error, try `rustc --explain E0309`.
|
