When looking for a local username on Windows, if we can get hold of the

[u/mdw/putty] / config.c

diff --git a/config.c b/config.c
index f44b760..464a241 100644 (file)
--- a/config.c
+++ b/config.c
@@ -1765,7 +1765,8 @@ void setup_config_box(struct controlbox *b, int midsession,
                /* We assume the local username is sufficiently stable
                 * to include on the dialog box. */
                char *user = get_username();
-               char *userlabel = dupprintf("Use system username (%s)", user);
+               char *userlabel = dupprintf("Use system username (%s)",
+                                           user ? user : "");
                sfree(user);
                ctrl_radiobuttons(s, "When username is not specified:", 'n', 4,
                                  HELPCTX(connection_username_from_env),