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Rollup merge of #95108 - scottmcm:more-in-target-display, r=Dylan-DPC

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Give more details in `Display` for `hir::Target`

Made because I was making a code change and got a very confusing "should be applied to a method, not a method" error.

```
error[E0718]: `into_try_type` language item must be applied to a method
   --> library\core\src\ops\try_trait.rs:352:32
    |
352 |     #[cfg_attr(not(bootstrap), lang = "into_try_type")]
    |                                ^^^^^^^^^^^^^^^^^^^^^^ attribute should be applied to a method, not a method
```

With this change the error is more actionable

```
error[E0718]: `into_try_type` language item must be applied to a required trait method
   --> library\core\src\ops\try_trait.rs:352:32
    |
352 |     #[cfg_attr(not(bootstrap), lang = "into_try_type")]
    |                                ^^^^^^^^^^^^^^^^^^^^^^ attribute should be applied to a required trait method, not a provided trait method
```
This commit is contained in:
Matthias Krüger 2022-03-20 09:15:00 +01:00 committed by GitHub
commit 355d87807f
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6
compiler/rustc_hir/src/target.rs
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@ -86,7 +86,11 @@ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
Target::Statement => "statement",
Target::Arm => "match arm",
Target::AssocConst => "associated const",
Target::Method(_) => "method",
Target::Method(kind) => match kind {
MethodKind::Inherent => "inherent method",
MethodKind::Trait { body: false } => "required trait method",
MethodKind::Trait { body: true } => "provided trait method",
},
Target::AssocTy => "associated type",
Target::ForeignFn => "foreign function",
Target::ForeignStatic => "foreign static item",