X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=simgear%2Fstructure%2FSGSharedPtr.hxx;h=c815a2fa566f94253282109ec6d5a76ce4489dad;hb=0908f867145683be76d2c26274451a44a7b1d5b0;hp=a494937bbaa11aef1b5dc3d41adcb43723da7db3;hpb=7e2dafdcb8ee701edfe18bcada0e4f0a27c895a0;p=simgear.git

diff --git a/simgear/structure/SGSharedPtr.hxx b/simgear/structure/SGSharedPtr.hxx
index a494937b..c815a2fa 100644
--- a/simgear/structure/SGSharedPtr.hxx
+++ b/simgear/structure/SGSharedPtr.hxx
@@ -88,7 +88,7 @@ public:
   { return T::count(_ptr); }
 
   bool valid(void) const
-  { return _ptr; }
+  { return _ptr != (T*)0; }
 
   void clear()
   { put(); }
@@ -113,4 +113,12 @@ private:
   friend class SGWeakPtr;
 };
 
+/**
+ * Support for boost::mem_fn
+ */
+template<typename T>
+T* get_pointer(SGSharedPtr<T> const & p)
+{
+  return p.ptr();
+}
 #endif