1 files changed, 52 insertions, 19 deletions

diff --git a/src/macmenu.c b/src/macmenu.c
index 67e18481a1b..740bda261d8 100644
--- a/src/macmenu.c
+++ b/src/macmenu.c
@@ -90,10 +90,12 @@ enum button_type
 typedef struct _widget_value
 {
   /* name of widget */
+  Lisp_Object   lname;
   char*         name;
   /* value (meaning depend on widget type) */
   char*         value;
   /* keyboard equivalent. no implications for XtTranslations */
+  Lisp_Object   lkey;
   char*         key;
   /* Help string or nil if none.
      GC finds this string through the frame's menu_bar_vector
@@ -1221,12 +1223,9 @@ single_submenu (item_key, item_name, maps)
                 save_wv->next = wv;
               else
                 first_wv->contents = wv;
-              wv->name = pane_string;
-              /* Ignore the @ that means "separate pane".
-                 This is a kludge, but this isn't worth more time.  */
-              if (!NILP (prefix) && wv->name[0] == '@')
-                wv->name++;
-              wv->value = 0;
+              wv->lname = pane_name;
+              /* Set value to 1 so update_submenu_strings can handle '@'  */
+              wv->value = (char *)1;
               wv->enabled = 1;
               wv->button_type = BUTTON_TYPE_NONE;
               wv->help = Qnil;
@@ -1269,9 +1268,9 @@ single_submenu (item_key, item_name, maps)
           else
             save_wv->contents = wv;
 
-          wv->name = (char *) SDATA (item_name);
+          wv->lname = item_name;
           if (!NILP (descrip))
-            wv->key = (char *) SDATA (descrip);
+            wv->lkey = descrip;
           wv->value = 0;
           /* The EMACS_INT cast avoids a warning.  There's no problem
              as long as pointers have enough bits to hold small integers.  */
@@ -1310,6 +1309,41 @@ single_submenu (item_key, item_name, maps)
 
   return first_wv;
 }
+/* Walk through the widget_value tree starting at FIRST_WV and update
+   the char * pointers from the corresponding lisp values.
+   We do this after building the whole tree, since GC may happen while the
+   tree is constructed, and small strings are relocated.  So we must wait
+   until no GC can happen before storing pointers into lisp values.  */
+static void
+update_submenu_strings (first_wv)
+     widget_value *first_wv;
+{
+  widget_value *wv;
+
+  for (wv = first_wv; wv; wv = wv->next)
+    {
+      if (wv->lname && ! NILP (wv->lname))
+        {
+          wv->name = SDATA (wv->lname);
+
+          /* Ignore the @ that means "separate pane".
+             This is a kludge, but this isn't worth more time.  */
+          if (wv->value == (char *)1)
+            {
+              if (wv->name[0] == '@')
+                wv->name++;
+              wv->value = 0;
+            }
+        }
+
+      if (wv->lkey && ! NILP (wv->lkey))
+        wv->key = SDATA (wv->lkey);
+
+      if (wv->contents)
+        update_submenu_strings (wv->contents);
+    }
+}
+
 
 /* Set the contents of the menubar widgets of frame F.
    The argument FIRST_TIME is currently ignored;
@@ -1388,8 +1422,6 @@ set_frame_menubar (f, first_time, deep_p)
 
       items = FRAME_MENU_BAR_ITEMS (f);
 
-      inhibit_garbage_collection ();
-
       /* Save the frame's previous menu bar contents data.  */
       if (previous_menu_items_used)
         bcopy (XVECTOR (f->menu_bar_vector)->contents, previous_items,
@@ -1454,6 +1486,7 @@ set_frame_menubar (f, first_time, deep_p)
           if (NILP (string))
             break;
           wv->name = (char *) SDATA (string);
+          update_submenu_strings (wv->contents);
           wv = wv->next;
         }
 
@@ -1807,9 +1840,9 @@ mac_menu_show (f, x, y, for_click, keymaps, title, error)
   /* Get the refcon to find the correct item*/
   if (menu_item_selection)
     {
-      menu = GetMenuHandle (HiWord (menu_item_choice));
-      if (menu) {
-        GetMenuItemRefCon (menu, menu_item_selection, &refcon);
+      MenuHandle sel_menu = GetMenuHandle (HiWord (menu_item_choice));
+      if (sel_menu) {
+        GetMenuItemRefCon (sel_menu, menu_item_selection, &refcon);
       }
     }
 
@@ -1831,11 +1864,11 @@ mac_menu_show (f, x, y, for_click, keymaps, title, error)
   {
     int i = MIN_POPUP_SUBMENU_ID;
     MenuHandle submenu = GetMenuHandle (i);
-    while (menu != NULL)
+    while (submenu != NULL)
       {
         DeleteMenu (i);
-        DisposeMenu (menu);
-        menu = GetMenuHandle (++i);
+        DisposeMenu (submenu);
+        submenu = GetMenuHandle (++i);
       }
   }
 
@@ -2207,7 +2240,7 @@ add_menu_item (MenuHandle menu, widget_value *wv, int submenu,
                int force_disable)
 {
   Str255 item_name;
-  int pos, i;
+  int pos;
 
   if (name_is_separator (wv->name))
     AppendMenu (menu, "\p-");
@@ -2263,9 +2296,9 @@ add_menu_item (MenuHandle menu, widget_value *wv, int submenu,
       else
         SetItemMark (menu, pos, noMark);
       }
-    }
 
-  SetMenuItemRefCon (menu, pos, (UInt32) wv->call_data);
+      SetMenuItemRefCon (menu, pos, (UInt32) wv->call_data);
+    }
 
   if (submenu != NULL)
     SetMenuItemHierarchicalID (menu, pos, submenu);