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don't use a span_note for ignored impls

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This commit is contained in:
lcnr 2022-06-02 11:13:31 +02:00
parent fb1976011e
commit d7645f4245
4 changed files with 6 additions and 35 deletions
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6
compiler/rustc_passes/src/dead.rs
View File

@ -722,11 +722,7 @@ impl<'tcx> DeadVisitor<'tcx> {
traits_str,
is_are
);
let multispan = ign_traits
.iter()
.map(|(_, impl_id)| self.tcx.def_span(*impl_id))
.collect::<Vec<_>>();
err.span_note(multispan, &msg);
err.note(&msg);
}
err.emit();
});

7
src/test/ui/derive-uninhabited-enum-38885.stderr
View File

@ -5,12 +5,7 @@ LL | Void(Void),
| ^^^^^^^^^^
|
= note: `-W dead-code` implied by `-W unused`
note: `Foo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
--> $DIR/derive-uninhabited-enum-38885.rs:10:10
|
LL | #[derive(Debug)]
| ^^^^^
= note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
= note: `Foo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
warning: 1 warning emitted

21
src/test/ui/derives/clone-debug-dead-code.stderr
View File

@ -16,12 +16,7 @@ error: field is never read: `f`
LL | struct B { f: () }
| ^^^^^
|
note: `B` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
--> $DIR/clone-debug-dead-code.rs:9:10
|
LL | #[derive(Clone)]
| ^^^^^
= note: this error originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
= note: `B` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
error: field is never read: `f`
--> $DIR/clone-debug-dead-code.rs:14:12
@ -29,12 +24,7 @@ error: field is never read: `f`
LL | struct C { f: () }
| ^^^^^
|
note: `C` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
--> $DIR/clone-debug-dead-code.rs:13:10
|
LL | #[derive(Debug)]
| ^^^^^
= note: this error originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
= note: `C` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
error: field is never read: `f`
--> $DIR/clone-debug-dead-code.rs:18:12
@ -42,12 +32,7 @@ error: field is never read: `f`
LL | struct D { f: () }
| ^^^^^
|
note: `D` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
--> $DIR/clone-debug-dead-code.rs:17:10
|
LL | #[derive(Debug,Clone)]
| ^^^^^ ^^^^^
= note: this error originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
= note: `D` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
error: field is never read: `f`
--> $DIR/clone-debug-dead-code.rs:21:12

7
src/test/ui/lint/dead-code/unused-variant.stderr
View File

@ -9,12 +9,7 @@ note: the lint level is defined here
|
LL | #![deny(dead_code)]
| ^^^^^^^^^
note: `Enum` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
--> $DIR/unused-variant.rs:3:10
|
LL | #[derive(Clone)]
| ^^^^^
= note: this error originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
= note: `Enum` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
error: aborting due to previous error