From 4a5259d1faa5e0e37ff654e7efe5ec40de72bdc7 Mon Sep 17 00:00:00 2001
From: Alexandre Duret-Lutz <adl@lrde.epita.fr>
Date: Sat, 1 Jun 2019 22:27:06 +0200
Subject: [PATCH] work around another swig4 change

* python/spot/impl.i: Make sure spot::acc_cond::mark_t::operator<<
exceptions are not ignored.
---
 python/spot/impl.i | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/python/spot/impl.i b/python/spot/impl.i
index c8b86a160..e3936660c 100644
--- a/python/spot/impl.i
+++ b/python/spot/impl.i
@@ -491,6 +491,10 @@ namespace std {
 %include <spot/twa/bddprint.hh>
 %include <spot/twa/formula2bdd.hh>
 %include <spot/twa/fwd.hh>
+ /* These operators may raise exceptions, and we do not
+    want Swig4 to convert those exceptions to NotImplemented. */
+%nopythonmaybecall spot::acc_cond::mark_t::operator<<;
+%nopythonmaybecall spot::acc_cond::mark_t::operator>>;
 %implicitconv spot::acc_cond::mark_t;
 %implicitconv spot::acc_cond::acc_code;
 %feature("flatnested") spot::acc_cond::mark_t;