Work around GCC bug 54561 in a better way

[gnu-emacs] / src / keyboard.c

diff --git a/src/keyboard.c b/src/keyboard.c
index 2b5d514cc4088cae97d96744e7744b09c01cdde3..8901ff055e7e69fd8e2beb9018ba89683daf70b2 100644 (file)
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -70,6 +70,11 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include TERM_HEADER
 #endif /* HAVE_WINDOW_SYSTEM */
 
+/* Work around GCC bug 54561.  */
+#if GNUC_PREREQ (4, 3, 0)
+# pragma GCC diagnostic ignored "-Wclobbered"
+#endif
+
 /* Variables for blockinput.h:  */
 
 /* Positive if interrupt input is blocked right now.  */
@@ -681,6 +686,14 @@ recursive_edit_1 (void)
   specbind (Qinhibit_redisplay, Qnil);
   redisplaying_p = 0;
 
+  /* This variable stores buffers that have changed so that an undo
+     boundary can be added. specbind this so that changes in the
+     recursive edit will not result in undo boundaries in buffers
+     changed before we entered there recursive edit.
+     See Bug #23632.
+  */
+  specbind (Qundo_auto__undoably_changed_buffers, Qnil);
+
   val = command_loop ();
   if (EQ (val, Qt))
     Fsignal (Qquit, Qnil);
@@ -2122,7 +2135,7 @@ read_event_from_main_queue (struct timespec *end_time,
 {
   Lisp_Object c = Qnil;
   sys_jmp_buf save_jump;
-  KBOARD *kb IF_LINT (= NULL);
+  KBOARD *kb;
 
  start:
 
@@ -2280,11 +2293,6 @@ read_decoded_event_from_main_queue (struct timespec *end_time,
     }
 }
 
-#if 4 < __GNUC__ + (6 <= __GNUC_MINOR__)
-# pragma GCC diagnostic push
-# pragma GCC diagnostic ignored "-Wclobbered"
-#endif
-
 /* Read a character from the keyboard; call the redisplay if needed.  */
 /* commandflag 0 means do not autosave, but do redisplay.
    -1 means do not redisplay, but do autosave.
@@ -3125,10 +3133,6 @@ read_char (int commandflag, Lisp_Object map,
   return c;
 }
 
-#if 4 < __GNUC__ + (6 <= __GNUC_MINOR__)
-# pragma GCC diagnostic pop
-#endif
-
 /* Record a key that came from a mouse menu.
    Record it for echoing, for this-command-keys, and so on.  */
 
@@ -8850,7 +8854,7 @@ read_key_sequence (Lisp_Object *keybuf, int bufsize, Lisp_Object prompt,
 
   /* The length of the echo buffer when we started reading, and
      the length of this_command_keys when we started reading.  */
-  ptrdiff_t echo_start IF_LINT (= 0);
+  ptrdiff_t echo_start UNINIT;
   ptrdiff_t keys_start;
 
   Lisp_Object current_binding = Qnil;
@@ -8898,7 +8902,7 @@ read_key_sequence (Lisp_Object *keybuf, int bufsize, Lisp_Object prompt,
      While we're reading, we keep the event here.  */
   Lisp_Object delayed_switch_frame;
 
-  Lisp_Object original_uppercase IF_LINT (= Qnil);
+  Lisp_Object original_uppercase UNINIT;
   int original_uppercase_position = -1;
 
   /* Gets around Microsoft compiler limitations.  */
@@ -9008,7 +9012,7 @@ read_key_sequence (Lisp_Object *keybuf, int bufsize, Lisp_Object prompt,
         while those allow us to restart the entire key sequence,
         echo_local_start and keys_local_start allow us to throw away
         just one key.  */
-      ptrdiff_t echo_local_start IF_LINT (= 0);
+      ptrdiff_t echo_local_start UNINIT;
       int keys_local_start;
       Lisp_Object new_binding;
 
@@ -10989,6 +10993,8 @@ syms_of_keyboard (void)
   DEFSYM (Qpost_command_hook, "post-command-hook");
 
   DEFSYM (Qundo_auto__add_boundary, "undo-auto--add-boundary");
+  DEFSYM (Qundo_auto__undoably_changed_buffers,
+          "undo-auto--undoably-changed-buffers");
 
   DEFSYM (Qdeferred_action_function, "deferred-action-function");
   DEFSYM (Qdelayed_warnings_hook, "delayed-warnings-hook");