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Rollup merge of rust-lang#89480 - hameerabbasi:issue-89118-test, r=ja…
…ckh726 Add test for issue 89118. This PR adds a test for issue 89118. Closes rust-lang#89118.
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src/test/ui/higher-rank-trait-bounds/normalize-under-binder/issue-89118.rs
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trait BufferMut {} | ||
struct Ctx<D>(D); | ||
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trait BufferUdpStateContext<B> {} | ||
impl<B: BufferMut, C> BufferUdpStateContext<B> for C {} | ||
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trait StackContext | ||
where | ||
Ctx<()>: for<'a> BufferUdpStateContext<&'a ()>, | ||
{ | ||
type Dispatcher; | ||
} | ||
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trait TimerContext { | ||
type Handler; | ||
} | ||
impl<C> TimerContext for C | ||
where | ||
C: StackContext, | ||
//~^ ERROR: is not satisfied [E0277] | ||
{ | ||
type Handler = Ctx<C::Dispatcher>; | ||
//~^ ERROR: is not satisfied [E0277] | ||
} | ||
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struct EthernetWorker<C>(C) | ||
where | ||
Ctx<()>: for<'a> BufferUdpStateContext<&'a ()>; | ||
impl<C> EthernetWorker<C> {} | ||
//~^ ERROR: is not satisfied [E0277] | ||
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fn main() {} |
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src/test/ui/higher-rank-trait-bounds/normalize-under-binder/issue-89118.stderr
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error[E0277]: the trait bound `for<'a> &'a (): BufferMut` is not satisfied | ||
--> $DIR/issue-89118.rs:19:8 | ||
| | ||
LL | C: StackContext, | ||
| ^^^^^^^^^^^^ the trait `for<'a> BufferMut` is not implemented for `&'a ()` | ||
| | ||
note: required because of the requirements on the impl of `for<'a> BufferUdpStateContext<&'a ()>` for `Ctx<()>` | ||
--> $DIR/issue-89118.rs:5:23 | ||
| | ||
LL | impl<B: BufferMut, C> BufferUdpStateContext<B> for C {} | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^ ^ | ||
note: required by a bound in `StackContext` | ||
--> $DIR/issue-89118.rs:9:14 | ||
| | ||
LL | trait StackContext | ||
| ------------ required by a bound in this | ||
LL | where | ||
LL | Ctx<()>: for<'a> BufferUdpStateContext<&'a ()>, | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `StackContext` | ||
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error[E0277]: the trait bound `for<'a> &'a (): BufferMut` is not satisfied | ||
--> $DIR/issue-89118.rs:22:20 | ||
| | ||
LL | type Handler = Ctx<C::Dispatcher>; | ||
| ^^^^^^^^^^^^^^^^^^ the trait `for<'a> BufferMut` is not implemented for `&'a ()` | ||
| | ||
note: required because of the requirements on the impl of `for<'a> BufferUdpStateContext<&'a ()>` for `Ctx<()>` | ||
--> $DIR/issue-89118.rs:5:23 | ||
| | ||
LL | impl<B: BufferMut, C> BufferUdpStateContext<B> for C {} | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^ ^ | ||
note: required by a bound in `StackContext` | ||
--> $DIR/issue-89118.rs:9:14 | ||
| | ||
LL | trait StackContext | ||
| ------------ required by a bound in this | ||
LL | where | ||
LL | Ctx<()>: for<'a> BufferUdpStateContext<&'a ()>, | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `StackContext` | ||
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error[E0277]: the trait bound `for<'a> &'a (): BufferMut` is not satisfied | ||
--> $DIR/issue-89118.rs:29:9 | ||
| | ||
LL | impl<C> EthernetWorker<C> {} | ||
| ^^^^^^^^^^^^^^^^^ the trait `for<'a> BufferMut` is not implemented for `&'a ()` | ||
| | ||
note: required because of the requirements on the impl of `for<'a> BufferUdpStateContext<&'a ()>` for `Ctx<()>` | ||
--> $DIR/issue-89118.rs:5:23 | ||
| | ||
LL | impl<B: BufferMut, C> BufferUdpStateContext<B> for C {} | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^ ^ | ||
note: required by a bound in `EthernetWorker` | ||
--> $DIR/issue-89118.rs:28:14 | ||
| | ||
LL | struct EthernetWorker<C>(C) | ||
| -------------- required by a bound in this | ||
LL | where | ||
LL | Ctx<()>: for<'a> BufferUdpStateContext<&'a ()>; | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `EthernetWorker` | ||
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error: aborting due to 3 previous errors | ||
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For more information about this error, try `rustc --explain E0277`. |