Index: generic/nsfAccessInt.h
===================================================================
diff -u -N -re01e30551cfcc79872de5b8a08a31258e3414c97 -r7645e8f88cc6a9e084724840b3a098d632edcb71
--- generic/nsfAccessInt.h	(.../nsfAccessInt.h)	(revision e01e30551cfcc79872de5b8a08a31258e3414c97)
+++ generic/nsfAccessInt.h	(.../nsfAccessInt.h)	(revision 7645e8f88cc6a9e084724840b3a098d632edcb71)
@@ -127,5 +127,21 @@
 #endif
 
 
+/*
+ * Introduced by a name reform in [a722c92a11], in Oct 2021, the macro
+ * TclFreeIntRep has been replaced by TclFreeInternalRep.
+ * 
+ * See also: 
+ *
+ * https://core.tcl-lang.org/tcl/info/a722c92a1142be4f
+ *
+ * For Tcl 8.7+, we should better switch to using the public interface
+ * to manipulating the internal rep of Tcl_Objs.
+ */
+#if TCL_MAJOR_VERSION==8 && TCL_MINOR_VERSION>6 && defined(TclFreeInternalRep)
+#   define TclFreeIntRep(objPtr) TclFreeInternalRep((objPtr))
+#endif
 
 
+
+