1 files changed, 2 insertions, 0 deletions
diff --git a/src/nvim/memline.c b/src/nvim/memline.c
index 55e7e01825..f28a9e60f4 100644
--- a/src/nvim/memline.c
+++ b/src/nvim/memline.c
@@ -1460,6 +1460,7 @@ static int process_still_running;
  */
 static time_t swapfile_info(char_u *fname)
 {
+  assert(fname != NULL);
   int fd;
   struct block0 b0;
   time_t x = (time_t)0;
@@ -3135,6 +3136,7 @@ attention_message (
     char_u *fname         /* swap file name */
 )
 {
+  assert(buf->b_fname != NULL);
   time_t x, sx;
   char        *p;