910   Mat_Shell              *shellA = (Mat_Shell *)A->data, *shellB = (Mat_Shell *)B->data;  in MatCopy_Shell()  local
919   shellB->ops[0] = shellA->ops[0];  in MatCopy_Shell()
921   if (shellA->ops->copy) PetscCall((*shellA->ops->copy)(A, B, str));  in MatCopy_Shell()
922   shellB->vscale = shellA->vscale;  in MatCopy_Shell()
923   shellB->vshift = shellA->vshift;  in MatCopy_Shell()
924   if (shellA->dshift) {  in MatCopy_Shell()
925     if (!shellB->dshift) PetscCall(VecDuplicate(shellA->dshift, &shellB->dshift));  in MatCopy_Shell()
926     PetscCall(VecCopy(shellA->dshift, shellB->dshift));  in MatCopy_Shell()
930   if (shellA->left) {  in MatCopy_Shell()
931     if (!shellB->left) PetscCall(VecDuplicate(shellA->left, &shellB->left));  in MatCopy_Shell()
932     PetscCall(VecCopy(shellA->left, shellB->left));  in MatCopy_Shell()
936   if (shellA->right) {  in MatCopy_Shell()
937     if (!shellB->right) PetscCall(VecDuplicate(shellA->right, &shellB->right));  in MatCopy_Shell()
938     PetscCall(VecCopy(shellA->right, shellB->right));  in MatCopy_Shell()
945   if (shellA->axpy) {  in MatCopy_Shell()
946     PetscCall(PetscObjectReference((PetscObject)shellA->axpy));  in MatCopy_Shell()
947     shellB->axpy        = shellA->axpy;  in MatCopy_Shell()
948     shellB->axpy_vscale = shellA->axpy_vscale;  in MatCopy_Shell()
949     shellB->axpy_state  = shellA->axpy_state;  in MatCopy_Shell()
951   if (shellA->zrows) {  in MatCopy_Shell()
952     PetscCall(ISDuplicate(shellA->zrows, &shellB->zrows));  in MatCopy_Shell()
953     if (shellA->zcols) PetscCall(ISDuplicate(shellA->zcols, &shellB->zcols));  in MatCopy_Shell()
954     PetscCall(VecDuplicate(shellA->zvals, &shellB->zvals));  in MatCopy_Shell()
955     PetscCall(VecCopy(shellA->zvals, shellB->zvals));  in MatCopy_Shell()
956     PetscCall(VecDuplicate(shellA->zvals_w, &shellB->zvals_w));  in MatCopy_Shell()
957     PetscCall(PetscObjectReference((PetscObject)shellA->zvals_sct_r));  in MatCopy_Shell()
958     PetscCall(PetscObjectReference((PetscObject)shellA->zvals_sct_c));  in MatCopy_Shell()
959     shellB->zvals_sct_r = shellA->zvals_sct_r;  in MatCopy_Shell()
960     shellB->zvals_sct_c = shellA->zvals_sct_c;  in MatCopy_Shell()
963   matmatA = shellA->matmat;  in MatCopy_Shell()