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new_without_default: do not suggest deriving #5616

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merged 1 commit into from
May 25, 2020
Merged

new_without_default: do not suggest deriving #5616

merged 1 commit into from
May 25, 2020

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euclio
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@euclio euclio commented May 18, 2020

changelog: do not suggest deriving Default in new_without_default

This commit changes the behavior of the new_without_default lint to not suggest deriving Default. This suggestion is misleading if the new implementation does something different than what a derived Default implementation would do, because then the two methods would not be equivalent.

Instead, the can_derive_default check is removed, and we always suggest implementing Default in terms of new().

@phansch phansch added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties label May 19, 2020
@phansch phansch self-requested a review May 22, 2020 07:31
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phansch suggested changes May 22, 2020
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I think the lint description also needs to be updated:

https://github.com/euclio/rust-clippy/blob/no-derive-suggestion/clippy_lints/src/new_without_default.rs#L20

LGTM otherwise, thanks!

@phansch phansch added S-waiting-on-author Status: This is awaiting some action from the author. (Use `@rustbot ready` to update this status) and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties labels May 22, 2020
@euclio euclio force-pushed the no-derive-suggestion branch from 92c564a to a578bed Compare May 22, 2020 15:50
@flip1995 flip1995 added S-waiting-on-bors Status: The marked PR was approved and is only waiting bors and removed S-waiting-on-author Status: This is awaiting some action from the author. (Use `@rustbot ready` to update this status) labels May 25, 2020
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@bors r=phansch,flip1995

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bors commented May 25, 2020

📌 Commit a578bed has been approved by phansch,flip1995

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bors commented May 25, 2020

⌛ Testing commit a578bed with merge c41916d...

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bors commented May 25, 2020

☀️ Test successful - checks-action_dev_test, checks-action_remark_test, checks-action_test
Approved by: phansch,flip1995
Pushing c41916d to master...

@bors bors merged commit c41916d into rust-lang:master May 25, 2020
@euclio euclio deleted the no-derive-suggestion branch May 25, 2020 18:42
This was referenced Dec 10, 2020
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