patch 9.0.0614: SpellFileMissing autocmd may delete bufferv9.0.0614

Problem:    SpellFileMissing autocmd may delete buffer.
Solution:   Disallow deleting the current buffer to avoid using freed memory.

1 files changed, 6 insertions, 1 deletions

diff --git a/src/buffer.c b/src/buffer.c
index edf71b0513..be7f1fa8d4 100644
--- 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;
 }