$OpenBSD$

From FreeBSD.

Index: src/TCContainer.h
--- src/TCContainer.h.orig
+++ src/TCContainer.h
@@ -58,7 +58,7 @@ using namespace __gnu_cxx;
 class TCCEqFunc : public unary_function<SocketPair,bool>
 {
 public:
-	bool operator()( const SocketPair &sp1, const SocketPair &sp2 ) 
+	bool operator()( const SocketPair &sp1, const SocketPair &sp2 ) const
 	{
 		if( sp1==sp2 )
 			return true;
