diff options
| -rw-r--r-- | libsmartcols/src/line.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/libsmartcols/src/line.c b/libsmartcols/src/line.c index aa339ce38..c2a991c2d 100644 --- a/libsmartcols/src/line.c +++ b/libsmartcols/src/line.c @@ -160,13 +160,15 @@ int scols_line_move_cells(struct libscols_line *ln, size_t newn, size_t oldn) /* remember data from old position */ memcpy(&ce, &ln->cells[oldn], sizeof(struct libscols_cell)); - /* remove from old position */ - memmove(ln->cells + oldn, ln->cells + oldn + 1, + /* remove old possition (move data behind oldn to oldn) */ + if (oldn + 1 < ln->ncells) + memmove(ln->cells + oldn, ln->cells + oldn + 1, (ln->ncells - oldn) * sizeof(struct libscols_cell)); /* create a space for new position */ - memmove(ln->cells + newn + 1, ln->cells + newn, - (ln->ncells - newn) * sizeof(struct libscols_cell)); + if (newn + 1 < ln->ncells) + memmove(ln->cells + newn + 1, ln->cells + newn, + (ln->ncells - newn) * sizeof(struct libscols_cell)); /* copy original data to new position */ memcpy(&ln->cells[newn], &ce, sizeof(struct libscols_cell)); |