1854     u_header_T	**uhp_table = NULL;  in u_read_undo()  local
2038 	    uhp_table = U_ALLOC_LINE(num_head * sizeof(u_header_T *));  in u_read_undo()
2039 	if (uhp_table == NULL)  in u_read_undo()
2054 	uhp_table[num_read_uhps++] = uhp;  in u_read_undo()
2080 	uhp = uhp_table[i];  in u_read_undo()
2084 	    if (uhp_table[j] != NULL && i != j  in u_read_undo()
2085 			      && uhp_table[i]->uh_seq == uhp_table[j]->uh_seq)  in u_read_undo()
2091 	    if (uhp_table[j] != NULL  in u_read_undo()
2092 				  && uhp_table[j]->uh_seq == uhp->uh_next.seq)  in u_read_undo()
2094 		uhp->uh_next.ptr = uhp_table[j];  in u_read_undo()
2099 	    if (uhp_table[j] != NULL  in u_read_undo()
2100 				  && uhp_table[j]->uh_seq == uhp->uh_prev.seq)  in u_read_undo()
2102 		uhp->uh_prev.ptr = uhp_table[j];  in u_read_undo()
2107 	    if (uhp_table[j] != NULL  in u_read_undo()
2108 			      && uhp_table[j]->uh_seq == uhp->uh_alt_next.seq)  in u_read_undo()
2110 		uhp->uh_alt_next.ptr = uhp_table[j];  in u_read_undo()
2115 	    if (uhp_table[j] != NULL  in u_read_undo()
2116 			      && uhp_table[j]->uh_seq == uhp->uh_alt_prev.seq)  in u_read_undo()
2118 		uhp->uh_alt_prev.ptr = uhp_table[j];  in u_read_undo()
2142     curbuf->b_u_oldhead = old_idx < 0 ? NULL : uhp_table[old_idx];  in u_read_undo()
2143     curbuf->b_u_newhead = new_idx < 0 ? NULL : uhp_table[new_idx];  in u_read_undo()
2144     curbuf->b_u_curhead = cur_idx < 0 ? NULL : uhp_table[cur_idx];  in u_read_undo()
2156     vim_free(uhp_table);  in u_read_undo()
2172     if (uhp_table != NULL)  in u_read_undo()
2175 	    if (uhp_table[i] != NULL)  in u_read_undo()
2176 		u_free_uhp(uhp_table[i]);  in u_read_undo()
2177 	vim_free(uhp_table);  in u_read_undo()