Index: generic/nsf.c
===================================================================
diff -u -N -re270ccdb0a8e34b8ed386d0226fde44222c32eaa -reb1d421a5d32daa0d2f328e5ba03010673695682
--- generic/nsf.c	(.../nsf.c)	(revision e270ccdb0a8e34b8ed386d0226fde44222c32eaa)
+++ generic/nsf.c	(.../nsf.c)	(revision eb1d421a5d32daa0d2f328e5ba03010673695682)
@@ -27207,10 +27207,11 @@
       RUNTIME_STATE(interp)->instanceMethodEpoch;
     Tcl_Command cmd = mcPtr->cmd;
 
-    fprintf(stderr, "   method epoch %u max %u cmd %p objProc %p flags %.6x",
+    fprintf(stderr, "   method epoch %u max %u cmd %p objProc 0x%"PRIxPTR" flags %.6x",
             mcPtr->methodEpoch, currentMethodEpoch,
             (void *)cmd,
-            (cmd != NULL) ? ((Command *)cmd)->objProc : NULL,
+            (cmd != NULL) ?
+            (unsigned long)PTR2UINT(((Command *)cmd)->objProc) : 0ul,
             mcPtr->flags);
     if (cmd != NULL) {
       fprintf(stderr, "... cmd %p flags %.6x\n", (void *)cmd, Tcl_Command_flags(cmd));