neovim

commit e2247c0baa78570f7cb81695c28394ce0be73825
parent 47630743fc67c56f724cd99660d86d8c4ea7782f
Author: zeertzjq <zeertzjq@outlook.com>
Date:   Wed, 30 Mar 2022 21:37:51 +0800

vim-patch:8.2.2515: memory access error when truncating an empty message

Problem:    Memory access error when truncating an empty message.
Solution:   Check for an empty string. (Dominique Pellé, closes vim/vim#7841)
https://github.com/vim/vim/commit/6281815eccc3ded54960f7798833ceb39561b9a0

Diffstat:
M
src/nvim/message.c
 | 
7
+++++++

1 file changed, 7 insertions(+), 0 deletions(-)
diff --git a/src/nvim/message.c b/src/nvim/message.c
@@ -382,6 +382,13 @@ void trunc_string(char_u *s, char_u *buf, int room_in, int buflen)
   int i;
   int n;
 
+  if (*s == NUL) {
+    if (buflen > 0) {
+      *buf = NUL;
+    }
+    return;
+  }
+
   if (room_in < 3) {
     room = 0;
   }