diff options
Diffstat (limited to 'Eigen/src/Core/CommaInitializer.h')
| -rw-r--r-- | Eigen/src/Core/CommaInitializer.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/Eigen/src/Core/CommaInitializer.h b/Eigen/src/Core/CommaInitializer.h index 2bbf74b05..70cbfeff5 100644 --- a/Eigen/src/Core/CommaInitializer.h +++ b/Eigen/src/Core/CommaInitializer.h @@ -45,6 +45,18 @@ struct CommaInitializer m_xpr.block(0, 0, other.rows(), other.cols()) = other; } + /* Copy/Move constructor which transfers ownership. This is crucial in + * absence of return value optimization to avoid assertions during destruction. */ + // FIXME in C++11 mode this could be replaced by a proper RValue constructor + EIGEN_DEVICE_FUNC + inline CommaInitializer(const CommaInitializer& o) + : m_xpr(o.m_xpr), m_row(o.m_row), m_col(o.m_col), m_currentBlockRows(o.m_currentBlockRows) { + // Mark original object as finished. In absence of R-value references we need to const_cast: + const_cast<CommaInitializer&>(o).m_row = m_xpr.rows(); + const_cast<CommaInitializer&>(o).m_col = m_xpr.cols(); + const_cast<CommaInitializer&>(o).m_currentBlockRows = 0; + } + /* inserts a scalar value in the target matrix */ EIGEN_DEVICE_FUNC CommaInitializer& operator,(const Scalar& s) @@ -110,7 +122,7 @@ struct CommaInitializer EIGEN_DEVICE_FUNC inline XprType& finished() { return m_xpr; } - XprType& m_xpr; // target expression + XprType& m_xpr; // target expression Index m_row; // current row id Index m_col; // current col id Index m_currentBlockRows; // current block height |