bug197.m:023: Error: no clauses for predicate `foo'/4.
bug197.m:025: Error: clause for predicate `foo'/3
bug197.m:025:   without corresponding `:- pred' declaration.
bug197.m:025:   However, a predicate of that name does exist with arity 4.
bug197.m:026: In clause for predicate `foo'/3:
bug197.m:026:   in argument 1 of call to predicate `list.foldl'/4:
bug197.m:026:   type error: argument has type `pred(
bug197.m:026:     string,
bug197.m:026:     T,
bug197.m:026:     V_6,
bug197.m:026:     V_6
bug197.m:026:   )',
bug197.m:026:   expected type was `pred(
bug197.m:026:     L,
bug197.m:026:     A,
bug197.m:026:     A
bug197.m:026:   )'.
bug197.m:031: Error: cannot use !:SS here due to the surrounding lambda
bug197.m:031:   expression; you may only refer to !.SS.
bug197.m:026:   Here is the surrounding context that makes state variable SS
bug197.m:026:   readonly.
bug197.m:031: In clause for predicate `foo'/3:
bug197.m:031:   warning: variable `STATE_VARIABLE_SS_20' occurs only once in
bug197.m:031:   this scope.
For more information, recompile with `-E'.