Index: generic/nsf.c
===================================================================
diff -u -N -rb49af3576652dce94b465a99175d2a3493c64c16 -r90b08e1f50b31cf2637d9ea96e2a859a828e64f9
--- generic/nsf.c	(.../nsf.c)	(revision b49af3576652dce94b465a99175d2a3493c64c16)
+++ generic/nsf.c	(.../nsf.c)	(revision 90b08e1f50b31cf2637d9ea96e2a859a828e64f9)
@@ -14465,8 +14465,8 @@
 int
 Nsf_ConvertToBoolean(Tcl_Interp *interp, Tcl_Obj *objPtr,  Nsf_Param const *pPtr,
                             ClientData *clientData, Tcl_Obj **outObjPtr) {
-  int result, bool;
-  result = Tcl_GetBooleanFromObj(interp, objPtr, &bool);
+  int result, boolVal;
+  result = Tcl_GetBooleanFromObj(interp, objPtr, &boolVal);
 
   nonnull_assert(interp != NULL);
   nonnull_assert(objPtr != NULL);
@@ -14475,7 +14475,7 @@
   nonnull_assert(outObjPtr != NULL);
 
   if (likely(result == TCL_OK)) {
-    *clientData = (ClientData)INT2PTR(bool);
+    *clientData = (ClientData)INT2PTR(boolVal);
   } else {
     Tcl_ResetResult(interp);
     NsfObjErrType(interp, NULL, objPtr, "boolean", pPtr);