Try to avoid crashes if the destructor of a TQMap is called when no private object was previously created

(cherry picked from commit 9974902237)
10 years ago · f7fcc6acb7
parent 92cad529ea
commit f7fcc6acb7
1 changed files with 6 additions and 2 deletions
--- a/src/tools/qmap.h
+++ b/src/tools/qmap.h
@ -644,8 +644,12 @@ public:
 #endif
    ~QMap()
    {
-	if ( sh->deref() )
-	    delete sh;
+	if ( sh ) {
+	    if ( sh->deref() ) {
+		delete sh;
+		sh = 0L;
+	    }
+	}
    }
    QMap<Key,T>& operator= ( const QMap<Key,T>& m );
 #ifndef QT_NO_STL