patch 8.2.3476: renaming a buffer on startup may cause using freed memory Commit: https://github.com/vim/vim/commit/d3710cf01ef6ab1b2f233866ff01dab76686f642 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Oct 4 23:13:13 2021 +0100 patch 8.2.3476: renaming a buffer on startup may cause using freed memory Problem: Renaming a buffer on startup may cause using freed memory. Solution: Check if the buffer is used in a window. (closes https://github.com/vim/vim/issues/8955)

>1+0&#ffffff0| @73
|2| @73
|3| @73
|4| @25|╔+0#0000001#ffd7ff255|▶|Ä|あ*&|い|う|え|お|◀+&|═@4|╗| +0#0000000#ffffff0@27
|5| @25|║+0#0000001#ffd7ff255| |T+0&#e0e0e08|h|i|s| |i|s| |a| |l|i|n|e| @1| +0&#ffd7ff255|║| +0#0000000#ffffff0@27
|6| @25|║+0#0000001#ffd7ff255| |a|n|d| |a|n|o|t|h|e|r| |l|i|n|e| |║| +0#0000000#ffffff0@27
|7| @25|╚+0#0000001#ffd7ff255|═@17|╝| +0#0000000#ffffff0@27
|8| @73
|9| @73
@57|1|,|1| @10|T|o|p|