Don't suggest dereferencing to unsized type
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f00c139998
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3 changed files with 51 additions and 1 deletions
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@ -838,7 +838,20 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
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obligation.param_env,
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real_trait_pred_and_base_ty,
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);
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if self.predicate_may_hold(&obligation) {
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let sized_obligation = Obligation::new(
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self.tcx,
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obligation.cause.clone(),
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obligation.param_env,
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ty::TraitRef::from_lang_item(
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self.tcx,
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hir::LangItem::Sized,
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obligation.cause.span,
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[base_ty],
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),
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);
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if self.predicate_may_hold(&obligation)
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&& self.predicate_must_hold_modulo_regions(&sized_obligation)
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{
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let call_node = self.tcx.hir().get(*call_hir_id);
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let msg = "consider dereferencing here";
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let is_receiver = matches!(
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