From 85d1016dffbad89e25225816ecc877400719eeb6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fran=C3=A7ois=20Picot?= <fpicot@users.noreply.github.com>
Date: Sun, 8 Dec 2019 13:18:11 +0100
Subject: [PATCH] [BUGFIX] fix python38 compilation (#647)

---
 libsrc/effectengine/Effect.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libsrc/effectengine/Effect.cpp b/libsrc/effectengine/Effect.cpp
index 11fec026..b408d314 100644
--- a/libsrc/effectengine/Effect.cpp
+++ b/libsrc/effectengine/Effect.cpp
@@ -213,7 +213,7 @@ void Effect::run()
 		Py_DECREF(main_dict);  // release "main_dict" when done
 	}
 	// stop sub threads if needed
-	for (PyThreadState* s = tstate->interp->tstate_head, *old = nullptr; s;)
+	for (PyThreadState* s = PyInterpreterState_ThreadHead(tstate->interp), *old = nullptr; s;)
 	{
 		if (s == tstate)
 		{
@@ -230,7 +230,7 @@ void Effect::run()
 		msleep(100);
 		Py_END_ALLOW_THREADS;
 
-		s = tstate->interp->tstate_head;
+		s = PyInterpreterState_ThreadHead(tstate->interp);
 	}
 
 	// Clean up the thread state