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Don't add message that will never be shown to users

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It will still be used in json, as seen by the ui test changes
This commit is contained in:
Oli Scherer 2022-11-11 14:45:18 +00:00
parent 014f7f4092
commit 21ce58732b
5 changed files with 6 additions and 9 deletions
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4
compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs
View file

@ -2445,12 +2445,12 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
(Ok(l), Ok(r)) => l.line == r.line,
_ => true,
};
if !ident.span.overlaps(span) && !same_line {
if !ident.span.is_dummy() && !ident.span.overlaps(span) && !same_line {
multispan.push_span_label(ident.span, "required by a bound in this");
}
}
let descr = format!("required by a bound in `{}`", item_name);
if span != DUMMY_SP {
if !span.is_dummy() {
let msg = format!("required by this bound in `{}`", item_name);
multispan.push_span_label(span, msg);
err.span_note(multispan, &descr);

1
src/test/ui/iterators/collect-into-array.rs
View file

@ -1,5 +1,4 @@
fn main() {
//~^ NOTE required by a bound in this
let whatever: [u32; 10] = (0..10).collect();
//~^ ERROR an array of type `[u32; 10]` cannot be built directly from an iterator
//~| NOTE try collecting into a `Vec<{integer}>`, then using `.try_into()`

2
src/test/ui/iterators/collect-into-array.stderr
View file

@ -1,5 +1,5 @@
error[E0277]: an array of type `[u32; 10]` cannot be built directly from an iterator
--> $DIR/collect-into-array.rs:3:31
--> $DIR/collect-into-array.rs:2:31
|
LL | let whatever: [u32; 10] = (0..10).collect();
| ^^^^^^^ ------- required by a bound introduced by this call

2
src/test/ui/iterators/collect-into-slice.rs
View file

@ -1,6 +1,4 @@
fn process_slice(data: &[i32]) {
//~^ NOTE required by a bound in this
//~| NOTE required by a bound in this
todo!()
}

6
src/test/ui/iterators/collect-into-slice.stderr
View file

@ -1,5 +1,5 @@
error[E0277]: the size for values of type `[i32]` cannot be known at compilation time
--> $DIR/collect-into-slice.rs:8:9
--> $DIR/collect-into-slice.rs:6:9
|
LL | let some_generated_vec = (0..10).collect();
| ^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
@ -9,7 +9,7 @@ LL | let some_generated_vec = (0..10).collect();
= help: unsized locals are gated as an unstable feature
error[E0277]: the size for values of type `[i32]` cannot be known at compilation time
--> $DIR/collect-into-slice.rs:8:38
--> $DIR/collect-into-slice.rs:6:38
|
LL | let some_generated_vec = (0..10).collect();
| ^^^^^^^ doesn't have a size known at compile-time
@ -22,7 +22,7 @@ LL | fn collect<B: FromIterator<Self::Item>>(self) -> B
| ^ required by this bound in `collect`
error[E0277]: a slice of type `[i32]` cannot be built since `[i32]` has no definite size
--> $DIR/collect-into-slice.rs:8:30
--> $DIR/collect-into-slice.rs:6:30
|
LL | let some_generated_vec = (0..10).collect();
| ^^^^^^^ ------- required by a bound introduced by this call