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-rw-r--r--Eigen/src/misc/Kernel.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/Eigen/src/misc/Kernel.h b/Eigen/src/misc/Kernel.h
index b9e1518fd..4b03e44c1 100644
--- a/Eigen/src/misc/Kernel.h
+++ b/Eigen/src/misc/Kernel.h
@@ -41,7 +41,7 @@ template<typename _DecompositionType> struct kernel_retval_base
typedef ReturnByValue<kernel_retval_base> Base;
typedef typename Base::Index Index;
- kernel_retval_base(const DecompositionType& dec)
+ explicit kernel_retval_base(const DecompositionType& dec)
: m_dec(dec),
m_rank(dec.rank()),
m_cols(m_rank==dec.cols() ? 1 : dec.cols() - m_rank)