patch 9.0.0614: SpellFileMissing autocmd may delete buffer Commit: https://github.com/vim/vim/commit/ef976323e770315b5fca544efb6b2faa25674d15 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Sep 28 11:48:30 2022 +0100 patch 9.0.0614: SpellFileMissing autocmd may delete buffer Problem: SpellFileMissing autocmd may delete buffer. Solution: Disallow deleting the current buffer to avoid using freed memory.

--- a/src/buffer.c
+++ b/src/buffer.c
@@ -468,7 +468,12 @@ can_unload_buffer(buf_T *buf)
 	    }
     }
     if (!can_unload)
-	semsg(_(e_attempt_to_delete_buffer_that_is_in_use_str), buf->b_fname);
+    {
+	char_u *fname = buf->b_fname != NULL ? buf->b_fname : buf->b_ffname;
+
+	semsg(_(e_attempt_to_delete_buffer_that_is_in_use_str),
+				fname != NULL ? fname : (char_u *)"[No Name]");
+    }
     return can_unload;
 }