diff options
Diffstat (limited to 'compiler/rustc_trait_selection/src')
| -rw-r--r-- | compiler/rustc_trait_selection/src/error_reporting/traits/suggestions.rs | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/compiler/rustc_trait_selection/src/error_reporting/traits/suggestions.rs b/compiler/rustc_trait_selection/src/error_reporting/traits/suggestions.rs index 2bbf90ed3ed..a81f7574c5e 100644 --- a/compiler/rustc_trait_selection/src/error_reporting/traits/suggestions.rs +++ b/compiler/rustc_trait_selection/src/error_reporting/traits/suggestions.rs @@ -1195,6 +1195,15 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> { c @ ObligationCauseCode::WhereClauseInExpr(_, _, hir_id, _) if self.tcx.hir_span(*hir_id).lo() == span.lo() => { + if let hir::Node::Expr(expr) = self.tcx.parent_hir_node(*hir_id) + && let hir::ExprKind::Call(base, _) = expr.kind + && let hir::ExprKind::Path(hir::QPath::TypeRelative(ty, _)) = base.kind + && ty.span == span + { + // Do not suggest borrowing when we already do so. This would happen with + // `let _ = &str::from("");` where the expression corresponds to the `str`. + return false; + } c } c if matches!( |