Recursively drop a type's parts if the type uses any typarams, since those typarams may represent types that actually require dropping.
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@ -2883,11 +2883,13 @@ let trans_visitor
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patch null_jmp;
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note_drop_step ty "drop_ty: done box-drop path";
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| MEM_interior when type_points_to_heap ty ->
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note_drop_step ty "drop_ty heap-referencing path";
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| MEM_interior
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when type_points_to_heap ty || (n_used_type_params ty > 0) ->
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note_drop_step ty "drop_ty possibly-heap-referencing path";
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iter_ty_parts ty_params cell ty
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(drop_ty ty_params) curr_iso;
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note_drop_step ty "drop_ty: done heap-referencing path";
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note_drop_step ty
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"drop_ty: done possibly-heap-referencing path";
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| MEM_interior ->
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