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Fix construction issue for XGC arrays in topology map fetch
The `Fetch::Load` for an input array of a topology map for an XGC array (that uses `ConnectivityExtrude`) was failing to compile because it creates a return `Vec` and then fills it. That does not work if the input array has values that cannot be default constructed. This is the case for `ArrayHandleRecombineVec`, which creates values that lazily pull data out of portals. Change the code to careful construct the return `Vec` such that it does not require the default constructor of the components.
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@ -227,15 +227,13 @@ struct Fetch<vtkm::exec::arg::FetchTagArrayTopologyMapIn,
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const vtkm::Id offset2 = (xgcidx.Planes[1] * xgcidx.NumberOfPointsPerPlane);
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using ValueType = vtkm::Vec<typename ExecObjectType::ValueType, 6>;
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ValueType result;
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result[0] = portal.Get(offset1 + xgcidx.PointIds[0][0]);
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result[1] = portal.Get(offset1 + xgcidx.PointIds[0][1]);
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result[2] = portal.Get(offset1 + xgcidx.PointIds[0][2]);
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result[3] = portal.Get(offset2 + xgcidx.PointIds[1][0]);
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result[4] = portal.Get(offset2 + xgcidx.PointIds[1][1]);
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result[5] = portal.Get(offset2 + xgcidx.PointIds[1][2]);
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return result;
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return ValueType(portal.Get(offset1 + xgcidx.PointIds[0][0]),
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portal.Get(offset1 + xgcidx.PointIds[0][1]),
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portal.Get(offset1 + xgcidx.PointIds[0][2]),
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portal.Get(offset2 + xgcidx.PointIds[1][0]),
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portal.Get(offset2 + xgcidx.PointIds[1][1]),
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portal.Get(offset2 + xgcidx.PointIds[1][2]));
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}
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