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Fix intset-fold-right on transient intsets

* module/language/cps/intset.scm (make-intset-folder): intset-fold-right
on a transient intset would dispatch to left fold after making the
persistent set.  Sadness!
This commit is contained in:
Andy Wingo 2024-08-15 12:18:02 +02:00
parent 7aa4cfa9de
commit d0790d766b

View file

@ -1,5 +1,5 @@
;;; Functional name maps
;;; Copyright (C) 2014, 2015, 2017 Free Software Foundation, Inc.
;;; Copyright (C) 2014, 2015, 2017, 2024 Free Software Foundation, Inc.
;;;
;;; This library is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU Lesser General Public License as
@ -454,13 +454,14 @@
(lp (if forward? (1+ i) (1- i)) seed ...)))
(lp (if forward? (1+ i) (1- i)) seed ...)))
(values seed ...)))))))
(match set
(($ <intset> min shift root)
(cond
((not root) (values seed ...))
(else (visit-branch root shift min seed ...))))
(($ <transient-intset>)
(intset-fold f (persistent-intset set) seed ...)))))
(let fold ((set set))
(match set
(($ <intset> min shift root)
(cond
((not root) (values seed ...))
(else (visit-branch root shift min seed ...))))
(($ <transient-intset>)
(fold (persistent-intset set)))))))
(define intset-fold
(case-lambda