[Bug cli/30353] [gdb/cli] segfault on -eiex "set editing off"

["vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=30353

--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
The easiest way to fix this is:
...
diff --git a/gdb/event-top.c b/gdb/event-top.c
index 53ddd515be7..f6e92655b0d 100644
--- a/gdb/event-top.c
+++ b/gdb/event-top.c
@@ -287,7 +287,13 @@ change_line_handler (int editing)
   if (ui != main_ui)
     return;

-  /* Don't try enabling editing if the interpreter doesn't support it
+  if (top_level_interpreter () == nullptr || command_interp () == nullptr)
+    {
+      gdb_printf ("Cannot set editing to on or off, no interpreter yet.\n");
+      return;
+    }
+
+    /* Don't try enabling editing if the interpreter doesn't support it
      (e.g., MI).  */
   if (!interp_supports_command_editing (top_level_interpreter ())
       || !interp_supports_command_editing (command_interp ()))
...
which gives us:
...
$ gdb -eiex "set editing off"
Cannot set editing to on or off, no interpreter yet.
(gdb) 
...

-- 
You are receiving this mail because:
You are on the CC list for the bug.