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Coercion: prioritise right hand type on error #4104

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Coercion: prioritise right hand type on error #4104

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6 changes: 6 additions & 0 deletions gcc/rust/typecheck/rust-type-util.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -270,6 +270,12 @@ coercion_site (HirId id, TyTy::TyWithLocation lhs, TyTy::TyWithLocation rhs,
TyTy::TyWithLocation (receiver, rhs.get_locus ()), locus,
true /*emit_error*/, true /*commit*/, true /*infer*/,
true /*cleanup*/);
if (coerced->get_kind () == TyTy::TypeKind::ERROR)
{
delete coerced;
coerced = lhs.get_ty ();
}

context->insert_autoderef_mappings (id, std::move (result.adjustments));
return coerced;
}
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