fix compilation with old gcc
fix compilation with old gcc

ROCmSoftwarePlatform/hipeigen,TSC21/Eigen,ritsu1228/eigen,Zefz/eigen,toastedcrumpets/eigen,ritsu1228/eigen,ROCmSoftwarePlatform/hipeigen,pasuka/eigen,Zefz/eigen,pasuka/eigen,TSC21/Eigen,TSC21/Eigen,ritsu1228/eigen,toastedcrumpets/eigen,toastedcrumpets/eigen,ritsu1228/eigen,ROCmSoftwarePlatform/hipeigen,toastedcrumpets/eigen,ROCmSoftwarePlatform/hipeigen,pasuka/eigen,pasuka/eigen,pasuka/eigen,Zefz/eigen,Zefz/eigen,TSC21/Eigen,ritsu1228/eigen