https://stackoverflow.com/questions/58144106

main.patch

diff --git a/src/mem/packet.hh b/src/mem/packet.hh
index 130cc41ad..7bccfb09f 100644
--- a/src/mem/packet.hh
+++ b/src/mem/packet.hh
@@ -56,6 +56,7 @@
 #include <bitset>
 #include <cassert>
 #include <list>
+#include <iostream>
 
 #include "base/addr_range.hh"
 #include "base/cast.hh"
@@ -196,7 +197,10 @@ class MemCmd
 
   public:
 
-    bool isRead() const            { return testCmdAttrib(IsRead); }
+    bool isRead() const            {
+        std::cout << "hello" << std::endl;
+        return testCmdAttrib(IsRead);
+    }
     bool isWrite() const           { return testCmdAttrib(IsWrite); }
     bool isUpgrade() const         { return testCmdAttrib(IsUpgrade); }
     bool isRequest() const         { return testCmdAttrib(IsRequest); }