fix segfault opportunity in menu

2 files changed, 7 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index a9198ca..7d70594 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,8 @@
 (Format: Year/Month/Day)
 Changes for 0.9.13
 *05/05/06:
+  * Fix potential segfault menu bug, thanks chenfeng (Simon)
+    Menu.cc
   * Added more KeyActions to TextBox (thanx to Vadim <suhanov_vadim@mail.ru>
       Control + LeftArrow  -> Moves cursor to the left direction, up to next word.
       Control + RightArrow -> to the right direction.
diff --git a/src/FbTk/Menu.cc b/src/FbTk/Menu.cc
index e0e3e7f..e05f531 100644
--- a/src/FbTk/Menu.cc
+++ b/src/FbTk/Menu.cc
@@ -273,6 +273,9 @@ void Menu::lower() {
 }
 
 void Menu::nextItem() {
+    if (menuitems.empty())
+        return;
+
     int old_which_press = m_which_press;
     m_active_index = -1;
     if (validIndex(old_which_press) && 
@@ -308,6 +311,8 @@ void Menu::nextItem() {
 }
 
 void Menu::prevItem() {
+    if (menuitems.empty())
+        return;
 
     int old_which_press = m_which_press;
     m_active_index = -1;