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simplify: add missing recursion

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"1 U (a | Fb)" was not always reduced to "F(a | b)".

Fixes #143.

* spot/tl/simplify.cc: Add the missing recurse() call.
* tests/core/reduc0.test: Add a test.
* NEWS: Mention the bug.
This commit is contained in:
Alexandre Duret-Lutz 2016-02-11 23:37:41 +01:00
parent 992c97151c
commit fbdd146565
3 changed files with 8 additions and 4 deletions
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5
tests/core/reduc0.test
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@ -1,6 +1,6 @@
#! /bin/sh
# -*- coding: utf-8 -*-
# Copyright (C) 2013, 2014, 2015 Laboratoire de Recherche et
# Copyright (C) 2013, 2014, 2015, 2016 Laboratoire de Recherche et
# Développement de l'Epita (LRDE).
#
# This file is part of Spot, a model checking library.
@ -35,3 +35,6 @@ run 0 ../reduc 0 '!{a[*];{b && !b}}'
# Triggered an assert before
run 0 ../reduc 0 '(a | (Xa M a))'
run 0 ../reduc 0 '(b xor (Xb U b)) <-> e'
run 0 ../reduc 3 '1 U (a | Fb)' 'F(a | b)'