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/gtk/dataform.h
+++ b/include/wx/gtk/dataform.h
@@ -30,7 +30,14 @@ public:
    wxDataFormat( const wxCStrData& id ) { InitFromString(id); }

    wxDataFormat& operator=(const wxDataFormat& format)
-        { m_type = format.m_type; m_format = format.m_format; return *this; }
+    {
+        if (&format != this)
+        {
+            m_type = format.m_type;
+            m_format = format.m_format;
+        }
+        return *this;
+    }
    wxDataFormat& operator=(NativeFormat format)
        { SetId(format); return *this; }