commit 347538fad0c503249ebdedd5884c2081257c9f61
author Bram Moolenaar <Bram@vim.org> Sat Mar 26 16:28:06 2022 +0000
committer Bram Moolenaar <Bram@vim.org> Sat Mar 26 16:28:06 2022 +0000
tree 33916eb0edab0b25845d8ad59a3cd551c62deccd
parent bf269ed0b0bd8414eea7bea17465b2738a9a2b55

patch 8.2.4631: crash when switching window in BufWipeout autocommand

Problem:    Crash when switching window in BufWipeout autocommand.
Solution:   Put any buffer in the window to avoid it being NULL.
            (closes #10024)

src/buffer.c

diff --git a/src/buffer.c b/src/buffer.c
index 2dac487..93da5dc 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -708,6 +708,10 @@
      */
     if (wipe_buf)
     {
+	// Do not wipe out the buffer if it is used in a window.
+	if (buf->b_nwindows > 0)
+	    return FALSE;
+
 	if (action == DOBUF_WIPE_REUSE)
 	{
 	    // we can re-use this buffer number, store it