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Rollup merge of #122799 - estebank:issue-122569, r=fee1-dead

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Replace closures with `_` when suggesting fully qualified path for method call

```
error[E0283]: type annotations needed
  --> $DIR/into-inference-needs-type.rs:12:10
   |
LL |         .into()?;
   |          ^^^^
   |
   = note: cannot satisfy `_: From<...>`
   = note: required for `FilterMap<...>` to implement `Into<_>`
help: try using a fully qualified path to specify the expected types
   |
LL ~     let list = <FilterMap<Map<std::slice::Iter<'_, &str>, _>, _> as Into<T>>::into(vec
LL |         .iter()
LL |         .map(|s| s.strip_prefix("t"))
LL ~         .filter_map(Option::Some))?;
   |
```

Fix #122569.
This commit is contained in:
Matthias Krüger
2024-03-21 12:05:08 +01:00
committed by GitHub
parent 697b020311 5fae665924
commit 300d3fb2fd
12 changed files with 118 additions and 53 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
compiler/rustc_hir_analysis/src/collect.rs
View File

@@ -1371,7 +1371,7 @@ fn infer_return_ty_for_fn_sig<'tcx>(
// recursive function definition to leak out into the fn sig.
let mut should_recover = false;
if let Some(ret_ty) = ret_ty.make_suggestable(tcx, false) {
if let Some(ret_ty) = ret_ty.make_suggestable(tcx, false, None) {
diag.span_suggestion(
ty.span,
"replace with the correct return type",
@@ -1449,7 +1449,7 @@ fn suggest_impl_trait<'tcx>(
let ty::Tuple(types) = *args_tuple.kind() else {
return None;
};
let types = types.make_suggestable(tcx, false)?;
let types = types.make_suggestable(tcx, false, None)?;
let maybe_ret =
if item_ty.is_unit() { String::new() } else { format!(" -> {item_ty}") };
Some(format!(
@@ -1507,7 +1507,7 @@ fn suggest_impl_trait<'tcx>(
// FIXME(compiler-errors): We may benefit from resolving regions here.
if ocx.select_where_possible().is_empty()
&& let item_ty = infcx.resolve_vars_if_possible(item_ty)
&& let Some(item_ty) = item_ty.make_suggestable(tcx, false)
&& let Some(item_ty) = item_ty.make_suggestable(tcx, false, None)
&& let Some(sugg) = formatter(
tcx,
infcx.resolve_vars_if_possible(args),