neovim

commit 4d0c6cae72716eb88d74361c49dc8baefba22c63
parent 1c3bda7e92f6162800bc013851c8570800026420
Author: zeertzjq <zeertzjq@outlook.com>
Date:   Mon,  3 Feb 2025 22:26:05 +0800

vim-patch:9.1.1023: Coverity complains about dereferencing NULL pointer

Problem:  Coverity complains about dereferencing NULL pointer
Solution: Verify curdiff is not null before dereferencing it

closes: vim/vim#16437

https://github.com/vim/vim/commit/a9f77be9223f8b886d89f7fac778d363586beb85

Co-authored-by: Christian Brabandt <cb@256bit.org>

Diffstat:
M
src/nvim/diff.c
 | 
6
++++--

1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/src/nvim/diff.c b/src/nvim/diff.c
@@ -1866,8 +1866,10 @@ static void count_filler_lines_and_topline(int *curlinenum_to, int *linesfiller,
       }
     } else {
       (*linesfiller) = 0;
-      ch_virtual_lines = get_max_diff_length(curdif);
-      isfiller = (curdif->df_count[toidx] ? false : true);
+      if (curdif) {
+        ch_virtual_lines = get_max_diff_length(curdif);
+        isfiller = (curdif->df_count[toidx] ? false : true);
+      }
       if (isfiller) {
         while (curdif && curdif->df_next && curdif->df_lnum[toidx] ==
                curdif->df_next->df_lnum[toidx]