diff -r f70f688d9ef9 -r c199e9976d93 lemon/bits/windows.cc
--- a/lemon/bits/windows.cc	Tue Apr 28 18:07:07 2015 +0200
+++ b/lemon/bits/windows.cc	Tue Apr 28 18:07:44 2015 +0200
@@ -21,6 +21,10 @@
 
 #include<lemon/bits/windows.h>
 
+#if defined(LEMON_WIN32) && defined(__GNUC__)
+#pragma GCC diagnostic ignored "-Wold-style-cast"
+#endif
+
 #ifdef LEMON_WIN32
 #ifndef WIN32_LEAN_AND_MEAN
 #define WIN32_LEAN_AND_MEAN