from_backend() should always be called with len > 0. Only rlogin

[u/mdw/putty] / terminal.c

diff --git a/terminal.c b/terminal.c
index 1c817da..d76d734 100644 (file)
--- a/terminal.c
+++ b/terminal.c
@@ -3603,6 +3603,8 @@ int term_ldisc(int option)
  */
 int from_backend(int is_stderr, char *data, int len)
 {
+    assert(len > 0);
+
     bufchain_add(&inbuf, data, len);
 
     /*