diff options
| author | Bram Moolenaar <Bram@vim.org> | 2022-07-28 18:44:27 +0100 |
|---|---|---|
| committer | Bram Moolenaar <Bram@vim.org> | 2022-07-28 18:44:27 +0100 |
| commit | 4e677b9c40ccbc5f090971b31dc2fe07bf05541d (patch) | |
| tree | 80c6f0dd96f2d82b5ebb9fe0b2e36d1fc5a6c1af /src/diff.c | |
| parent | cb5ed4d6252a7c76c2f85ae95cb1e4e2bccc41fc (diff) | |
patch 9.0.0101: invalid memory access in diff mode with "dp" and undov9.0.0101
Problem: Invalid memory access in diff mode with "dp" and undo.
Solution: Make sure the line number does not go below one.
Diffstat (limited to 'src/diff.c')
| -rw-r--r-- | src/diff.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/diff.c b/src/diff.c index e4bafe2c93..fb43eee844 100644 --- a/src/diff.c +++ b/src/diff.c @@ -464,7 +464,10 @@ diff_mark_adjust_tp( for (i = 0; i < DB_COUNT; ++i) if (tp->tp_diffbuf[i] != NULL && i != idx) { - dp->df_lnum[i] -= off; + if (dp->df_lnum[i] > off) + dp->df_lnum[i] -= off; + else + dp->df_lnum[i] = 1; dp->df_count[i] += n; } } @@ -2863,8 +2866,8 @@ ex_diffgetput(exarg_T *eap) { // remember deleting the last line of the buffer buf_empty = curbuf->b_ml.ml_line_count == 1; - ml_delete(lnum); - --added; + if (ml_delete(lnum) == OK) + --added; } for (i = 0; i < dp->df_count[idx_from] - start_skip - end_skip; ++i) { |