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Suggest associated method on deref types when path syntax method fails #100302

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merged 1 commit into from
Sep 4, 2022

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Fixes #100278

@rustbot rustbot added the T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. label Aug 9, 2022
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r? @jackh726

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@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Aug 9, 2022
Comment on lines +1658 to +1681
&& pick.item.fn_has_self_parameter
&& let Some(self_ty) =
self.tcx.fn_sig(pick.item.def_id).inputs().skip_binder().get(0)
&& self_ty.is_ref()
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@compiler-errors compiler-errors Aug 9, 2022

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This is a bit of a strange heuristic, but it works pretty well. Part of the issue here is that we don't have type information for the self arg (yet), since we haven't called check_expr.

This is a MaybeIncorrect suggestion, so I think it's fine for it to be a bit incorrect, as long as it's not suggesting something wildly wrong.

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bors commented Aug 31, 2022

☔ The latest upstream changes (presumably #101225) made this pull request unmergeable. Please resolve the merge conflicts.

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@compiler-errors compiler-errors force-pushed the deref-path-methods branch 2 times, most recently from d14a4f0 to dfc8a00 Compare September 3, 2022 07:15
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jackh726 commented Sep 3, 2022

@bors r+

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bors commented Sep 3, 2022

📌 Commit 12a4952 has been approved by jackh726

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 Sep 3, 2022
bors added a commit to rust-lang-ci/rust that referenced this pull request Sep 4, 2022
…iaskrgr

Rollup of 4 pull requests

Successful merges:

 - rust-lang#100302 (Suggest associated method on deref types when path syntax method fails)
 - rust-lang#100647 ( Make trait bound not satisfied specify kind)
 - rust-lang#101349 (rustdoc: remove `.impl-items { flex-basis }` CSS, not in flex container)
 - rust-lang#101369 (Fix `global_asm` macro pretty printing)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit bd9750f into rust-lang:master Sep 4, 2022
@rustbot rustbot added this to the 1.65.0 milestone Sep 4, 2022
@compiler-errors compiler-errors deleted the deref-path-methods branch August 11, 2023 19:58
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Using non-existent associated method doesn't hint about deref
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