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rustdoc doesn't produce "Trait Implementations" for type aliases #19381

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jbapple opened this issue Nov 28, 2014 · 2 comments
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rustdoc doesn't produce "Trait Implementations" for type aliases #19381

jbapple opened this issue Nov 28, 2014 · 2 comments
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C-bug Category: This is a bug. T-dev-tools Relevant to the dev-tools subteam, which will review and decide on the PR/issue. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue.

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@jbapple
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jbapple commented Nov 28, 2014 

pub trait Foo {}
pub struct Bar;
pub type Baz = Bar;
impl Foo for Baz {}
pub trait Qux {}
impl Qux for Bar {}

For this, rustdoc produces a "Trait Implementations" section for Bar, but not for Baz. Furthermore, Baz's "Trait Implementations" section lists only Qux, not Foo. The "Implementors" section on the Foo page does list that Baz is an implementor.
@kmcallister kmcallister added the T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue. label Jan 28, 2015
This was referenced May 23, 2015
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@vbarrielle vbarrielle mentioned this issue Sep 10, 2015
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@steveklabnik
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Triage: no change.

@mitaa mitaa mentioned this issue Mar 8, 2016
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@lambda-fairy lambda-fairy mentioned this issue Sep 24, 2016
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lambda-fairy added a commit to lambda-fairy/maud that referenced this issue Sep 24, 2016
@lambda-fairy
Do not implement traits on type aliases
0c437ca 
Due to rust-lang/rust#19381, trait `impl`s on type aliases are not shown
in automatically generated documentation. Until this bug is fixed, it is
better not to write code this way.
@steveklabnik steveklabnik added T-dev-tools Relevant to the dev-tools subteam, which will review and decide on the PR/issue. and removed T-tools labels May 18, 2017
@Mark-Simulacrum Mark-Simulacrum added C-feature-request Category: A feature request, i.e: not implemented / a PR. C-bug Category: This is a bug. and removed C-feature-request Category: A feature request, i.e: not implemented / a PR. labels Jul 22, 2017
@QuietMisdreavus
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Fixed by #42027.

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C-bug Category: This is a bug. T-dev-tools Relevant to the dev-tools subteam, which will review and decide on the PR/issue. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue.
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@steveklabnik @kmcallister @jbapple @Mark-Simulacrum @QuietMisdreavus