diff -r ce09935439b3 -r 2e0b7ca391dc test/Tools/isac/ProgLang/listC.sml
--- a/test/Tools/isac/ProgLang/listC.sml	Wed Aug 03 18:17:27 2022 +0200
+++ b/test/Tools/isac/ProgLang/listC.sml	Thu Aug 04 12:48:37 2022 +0200
@@ -51,7 +51,7 @@
 TermC.atomty t;
 val thm = Thm.prop_of @{thm NTH_NIL};
 TermC.atomty thm;
-val SOME (t', _) = rewrite_ ctxt dummy_ord prog_expr false @{thm NTH_NIL} t;
+val SOME (t', _) = rewrite_ ctxt Rewrite_Ord.function_empty prog_expr false @{thm NTH_NIL} t;
 if UnparseC.term t' = "a" then () 
 else error "NTH 1 [a,b,c,d,e] = a ..changed";
 
@@ -66,7 +66,7 @@
 | _ => error "ListC.NTH changed";
 val thm = Thm.prop_of @{thm NTH_CONS};
 TermC.atomty thm;
-val SOME (t', _) = rewrite_ ctxt dummy_ord prog_expr false  @{thm NTH_CONS} t;
+val SOME (t', _) = rewrite_ ctxt Rewrite_Ord.function_empty prog_expr false  @{thm NTH_CONS} t;
 if UnparseC.term t' = "NTH (3 + - 1) [b, c, d, e]" then () 
 else error "NTH 3 [a,b,c,d,e] = NTH (3 + - 1) [b, c, d, e] ..changed";