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Fix rare crashes in 'try_window_reusing_current_matrix'

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* src/xdisp.c (try_window_reusing_current_matrix): Make sure we
never use a mode-line glyph row to start displaying scrolled-in
rows.  (Bug#63711)
This commit is contained in:
Eli Zaretskii 2023-05-25 20:50:46 +03:00
parent 709d902002
commit d292d28229
1 changed files with 3 additions and 1 deletions
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4
src/xdisp.c
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@ -21081,8 +21081,10 @@ try_window_reusing_current_matrix (struct window *w)
pt_row = first_row_to_display;
}
if (first_row_to_display->y >= yb)
return false;
/* Start displaying at the start of first_row_to_display. */
eassert (first_row_to_display->y < yb);
init_to_row_start (&it, w, first_row_to_display);
nrows_scrolled = (MATRIX_ROW_VPOS (first_reusable_row, w->current_matrix)