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Closes #99572

This will try to improve the node in the error message by suggesting a general solution because the solution, in this case, is application depended.

I'm not super happy regarding the code quality, but I'm happy to have feedback on it.

@rustbot r? @compiler-errors

@rustbot rustbot added the T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. label Jul 24, 2022
@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Jul 24, 2022
@vincenzopalazzo vincenzopalazzo changed the title improve note on the when we impl of external trait on pointer add suggestion when there is a impl of external trait on pointer with wrong coherence rules Jul 24, 2022
@vincenzopalazzo vincenzopalazzo force-pushed the macros/impl_on_ptr branch 2 times, most recently from 119d42a to 07de5de Compare July 26, 2022 21:00
@vincenzopalazzo vincenzopalazzo force-pushed the macros/impl_on_ptr branch 2 times, most recently from ddf4d0c to e566a33 Compare July 27, 2022 21:48
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@bors r+ rollup

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bors commented Jul 28, 2022

📌 Commit 1e584d2 has been approved by compiler-errors

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jul 28, 2022
bors added a commit to rust-lang-ci/rust that referenced this pull request Jul 29, 2022
Rollup of 8 pull requests

Successful merges:

 - rust-lang#99686 (add suggestion when there is a impl of external trait on pointer with wrong coherence rules)
 - rust-lang#99760 (doc/rustc: describe the uefi target platforms)
 - rust-lang#99766 (Htmldocck: Substitute the doc channel when blessing)
 - rust-lang#99781 (Use String::from_utf8_lossy in CStr demo)
 - rust-lang#99803 (Update mentions to `rustc_metadata::rmeta::Lazy`)
 - rust-lang#99845 (Remove `$` prefix for bash scripts in doc)
 - rust-lang#99850 (rustdoc: Remove more Clean trait implementations)
 - rust-lang#99872 (Clone the `src/llvm-project` submodule if profiling is enabled)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit a573adf into rust-lang:master Jul 29, 2022
@rustbot rustbot added this to the 1.64.0 milestone Jul 29, 2022
@vincenzopalazzo vincenzopalazzo deleted the macros/impl_on_ptr branch July 29, 2022 13:37
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Successfully merging this pull request may close these issues.

Misleading error when implementing foreign trait on pointers to local types
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