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Fix span for IndexMut method call on HashMap/BTreeMap

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This commit is contained in:
Michael Goulet 2024-12-31 01:20:45 +00:00
parent 6a3474e653
commit f28e13b055
3 changed files with 10 additions and 4 deletions
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4
compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs
View file

@ -624,7 +624,7 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
self.suggested = true;
} else if let hir::ExprKind::MethodCall(_path, receiver, _, sp) = expr.kind
&& let hir::ExprKind::Index(val, index, _) = receiver.kind
&& expr.span == self.assign_span
&& receiver.span == self.assign_span
{
// val[index].path(args..);
self.err.multipart_suggestion(
@ -639,7 +639,7 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
index.span.shrink_to_hi().with_hi(receiver.span.hi()),
") { val".to_string(),
),
(sp.shrink_to_hi(), "); }".to_string()),
(sp.shrink_to_hi(), "; }".to_string()),
],
Applicability::MachineApplicable,
);

5
tests/ui/borrowck/index-mut-help.stderr
View file

@ -5,7 +5,10 @@ LL | map["peter"].clear();
| ^^^^^^^^^^^^ cannot borrow as mutable
|
= help: trait `IndexMut` is required to modify indexed content, but it is not implemented for `HashMap<&str, String>`
= help: to modify a `HashMap<&str, String>`, use `.get_mut()`, `.insert()` or the entry API
help: to modify a `HashMap<&str, String>` use `.get_mut()`
|
LL | if let Some(val) = map.get_mut("peter") { val.clear(); };
| ++++++++++++++++++ ~~~~~~~~~ ~~~~~~~ +++
error[E0594]: cannot assign to data in an index of `HashMap<&str, String>`
--> $DIR/index-mut-help.rs:11:5

5
tests/ui/issues/issue-41726.stderr
View file

@ -5,7 +5,10 @@ LL | things[src.as_str()].sort();
| ^^^^^^^^^^^^^^^^^^^^ cannot borrow as mutable
|
= help: trait `IndexMut` is required to modify indexed content, but it is not implemented for `HashMap<String, Vec<String>>`
= help: to modify a `HashMap<String, Vec<String>>`, use `.get_mut()`, `.insert()` or the entry API
help: to modify a `HashMap<String, Vec<String>>` use `.get_mut()`
|
LL | if let Some(val) = things.get_mut(src.as_str()) { val.sort(); };
| ++++++++++++++++++ ~~~~~~~~~ ~~~~~~~ +++
error: aborting due to 1 previous error