Avoid an ICE in diagnostics

2024-02-13 10:44:50 +00:00
parent 09d73fab08
commit d3a89cd214
3 changed files with 35 additions and 1 deletions
--- a/compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs
@@ -698,7 +698,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
                                    ),
                                ..
                            }) => {
-                                let hir::Ty { span, .. } = inputs[local.index() - 1];
+                                let hir::Ty { span, .. } = *inputs.get(local.index() - 1)?;
                                Some(span)
                            }
                            _ => None,