来源有以下评论: // Return the number of items in the queue; thread unsafe __TBB_ASSERT(sizeof(std::ptrdiff_t) <= sizeof(size_type), NULL);std::ptrdiff_t hc = head_counter.load(std::memory_order_a
/include/c++/4.6.3/bits/stl_bvector.h:266:3: note: std::_Bit_iterator std::operator+(std::ptrdiff_t,:266:3: note: no known conversion for argument 1 from ‘Eigen::SparseMatrix<int, 0, int>’ to ‘std::ptrdiff_t{aka long int}’
/usr/lib/gc