check for self-assignment in operator=

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@51123 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2008-01-09 04:08:33 +00:00
parent c6ed07281f
commit 162e998c2f
12 changed files with 102 additions and 62 deletions
--- a/include/wx/windowid.h
+++ b/include/wx/windowid.h
@@ -72,7 +72,8 @@ public:

    wxWindowIDRef& operator=(const wxWindowIDRef& id)
    {
-        Assign(id.m_id);
+        if (&id != this)
+            Assign(id.m_id);
        return *this;
    }