patch 9.0.0598: using negative array index with negative width window
Problem: Using negative array index with negative width window.
Solution: Make sure the window width does not become negative.
diff --git a/src/window.c b/src/window.c
index 755848e..db08e41 100644
--- a/src/window.c
+++ b/src/window.c
@@ -2089,6 +2089,8 @@
if (hnc) // add next_curwin size
{
next_curwin_size -= p_wiw - (m - n);
+ if (next_curwin_size < 0)
+ next_curwin_size = 0;
new_size += next_curwin_size;
room -= new_size - next_curwin_size;
}
@@ -6611,7 +6613,8 @@
void
win_new_width(win_T *wp, int width)
{
- wp->w_width = width;
+ // Should we give an error if width < 0?
+ wp->w_width = width < 0 ? 0 : width;
wp->w_lines_valid = 0;
changed_line_abv_curs_win(wp);
// Handled in win_fix_scroll()