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COMP: Copy BSplineInterpolationWeightFunction::SupportSize within lambda #2742

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Merged
N-Dekker merged 1 commit into from
Sep 20, 2021
Merged

COMP: Copy BSplineInterpolationWeightFunction::SupportSize within lambda #2742

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8 changes: 5 additions & 3 deletions Modules/Core/Common/include/itkBSplineInterpolationWeightFunction.h
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Original file line number Diff line number Diff line change
Expand Up @@ -123,9 +123,11 @@ class ITK_TEMPLATE_EXPORT BSplineInterpolationWeightFunction
/** Table mapping linear offset to indices. */
const TableType m_OffsetToIndexTable{ [] {
TableType table;
// Note: Copied the constexpr value `SupportSize` to a temporary, `SizeType{ SupportSize }`, to prevent a GCC
// (Ubuntu 7.5.0-3ubuntu1~18.04) link error, "undefined reference to `SupportSize`".
std::copy_n(ZeroBasedIndexRange<SpaceDimension>(SizeType{ SupportSize }).cbegin(), NumberOfWeights, table.begin());
// Note: Copied the constexpr value `SupportSize` to a local variable, to prevent a GCC
// (Ubuntu 7.5.0-3ubuntu1~18.04) link error, "undefined reference to `SupportSize`", and Clang
// (Mac10.13-AppleClang-dbg-x86_64-static) "Undefined symbols for architecture x86_64".
const auto supportSize = SupportSize;
std::copy_n(ZeroBasedIndexRange<SpaceDimension>(supportSize).cbegin(), NumberOfWeights, table.begin());
return table;
}() };
};
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