diff -up CoinUtils-2.9.7/src/CoinMessageHandler.cpp.orig CoinUtils-2.9.7/src/CoinMessageHandler.cpp
--- CoinUtils-2.9.7/src/CoinMessageHandler.cpp.orig	2013-12-16 12:50:16.715397458 -0200
+++ CoinUtils-2.9.7/src/CoinMessageHandler.cpp	2013-12-16 12:50:41.994398426 -0200
@@ -820,7 +820,7 @@ CoinMessageHandler::operator<< (double d
 	  sprintf(messageOut_,g_format_,doublevalue);
 	  if (next != format_+2) {
 	    messageOut_+=strlen(messageOut_);
-	    sprintf(messageOut_,format_+2);
+	    sprintf(messageOut_,"%s",format_+2);
 	  }
 	}
 	messageOut_+=strlen(messageOut_);