Index: generic/nsf.c
===================================================================
diff -u -rd2e248fb4ae598c85082be386cd7d6c917fde2aa -rb49b73b79d290426a2d112abaa18bb4b95dd9b2f
--- generic/nsf.c	(.../nsf.c)	(revision d2e248fb4ae598c85082be386cd7d6c917fde2aa)
+++ generic/nsf.c	(.../nsf.c)	(revision b49b73b79d290426a2d112abaa18bb4b95dd9b2f)
@@ -1060,7 +1060,7 @@
 }
 
 static NSF_INLINE TclVarHashTable *
-VarHashTableCreate() {
+VarHashTableCreate(void) {
   TclVarHashTable *varTablePtr = (TclVarHashTable *) ckalloc((int)sizeof(TclVarHashTable));
 
   TclInitVarHashTable(varTablePtr, NULL);
@@ -7557,10 +7557,10 @@
   }
 }
 
-static NsfAssertionStore *AssertionCreateStore() returns_nonnull;
+static NsfAssertionStore *AssertionCreateStore(void) returns_nonnull;
 
 static NsfAssertionStore *
-AssertionCreateStore() {
+AssertionCreateStore(void) {
   NsfAssertionStore *aStore = NEW(NsfAssertionStore);
 
   aStore->invariants = NULL;
@@ -11680,7 +11680,7 @@
  *----------------------------------------------------------------------
  */
 static NsfParamDefs *
-ParamDefsNew() {
+ParamDefsNew(void) {
   NsfParamDefs *paramDefs;
   static NsfMutex serialMutex = 0;
   static int serial = 0;
Index: generic/nsfInt.h
===================================================================
diff -u -r2076cebc74107d25878e6a95688db6b444fd6b0e -rb49b73b79d290426a2d112abaa18bb4b95dd9b2f
--- generic/nsfInt.h	(.../nsfInt.h)	(revision 2076cebc74107d25878e6a95688db6b444fd6b0e)
+++ generic/nsfInt.h	(.../nsfInt.h)	(revision b49b73b79d290426a2d112abaa18bb4b95dd9b2f)
@@ -1230,7 +1230,7 @@
  *
  */
 
-typedef void (Nsf_AnyFun)();
+typedef void (Nsf_AnyFun)(void);
 
 EXTERN void Nsf_InitFunPtrHashTable(Tcl_HashTable *tablePtr)
   nonnull(1);