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Prevent potential ODR in TensorExecutor

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This commit is contained in:
Eugene Zhulenev 2019-10-28 15:45:09 -07:00
parent 6332aff0b2
commit bd864ab42b
1 changed files with 7 additions and 0 deletions
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7
unsupported/Eigen/CXX11/src/Tensor/TensorExecutor.h
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@ -82,6 +82,13 @@ class TensorExecutor {
public:
typedef typename Expression::Index StorageIndex;
// Including `unsupported/Eigen/CXX11/Tensor` in different translation units
// with/without `EIGEN_USE_THREADS` is an ODR violation. If this template
// is instantiated with a thread pool device, it means that this header
// file was included without defining `EIGEN_USE_THREADS`.
static_assert(!std::is_same<Device, ThreadPoolDevice>::value,
"You are missing `#define EIGEN_USE_THREADS`");
EIGEN_DEVICE_FUNC
static EIGEN_STRONG_INLINE void run(const Expression& expr,
const Device& device = Device()) {