* main.c (complete_command): Deal with it if arg is NULL.

2 files changed, 14 insertions, 2 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 3bd9f03..d2ddcaf 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+Fri Mar 25 08:33:28 1994  Jim Kingdon  (kingdon@lioth.cygnus.com)
+
+	* main.c (complete_command): Deal with it if arg is NULL.
+
 Thu Mar 24 07:12:09 1994  Jim Kingdon  (kingdon@lioth.cygnus.com)
 
 	* config/mips/tm-mips.h (SETUP_ARBITRARY_FRAME): Revise comment
diff --git a/gdb/main.c b/gdb/main.c
index 96b6cde..38771da 100644
--- a/gdb/main.c
+++ b/gdb/main.c
@@ -1987,8 +1987,16 @@ complete_command (arg, from_tty)
 
   dont_repeat ();
 
-  strcpy (rl_line_buffer, arg);
-  rl_point = strlen (arg);
+  if (arg == NULL)
+    {
+      rl_line_buffer[0] = '\0';
+      rl_point = 0;
+    }
+  else
+    {
+      strcpy (rl_line_buffer, arg);
+      rl_point = strlen (arg);
+    }
 
   for (completion = symbol_completion_function (rl_line_buffer, i = 0);
        completion;