From 604971d651017e90cd66fd3fc3a82945341269f0 Mon Sep 17 00:00:00 2001
From: Alexandre Duret-Lutz <adl@lrde.epita.fr>
Date: Fri, 9 Jan 2015 22:23:55 +0100
Subject: [PATCH] postproc: use scc_filter_states on SBA

* src/tgbaalgos/postproc.cc: Here.  Otherwise, reading
a neverclaim with autfilt would loose the SBA property
and degeneralize again.
---
 src/tgbaalgos/postproc.cc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/tgbaalgos/postproc.cc b/src/tgbaalgos/postproc.cc
index 1adbaff50..bf7f919f9 100644
--- a/src/tgbaalgos/postproc.cc
+++ b/src/tgbaalgos/postproc.cc
@@ -149,7 +149,12 @@ namespace spot
       // ignored.
       a = scc_filter_states(a);
     else if (scc_filter_ > 0)
-      a = scc_filter(a, scc_filter_ > 1);
+      {
+	if (type_ == BA && a->is_sba())
+	  a = scc_filter_states(a);
+	else
+	  a = scc_filter(a, scc_filter_ > 1);
+      }
 
     if (type_ == Monitor)
       {