From a1dee6cba207497469e091fb26f35da1f5bfbdce Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Sat, 21 Jan 2023 01:42:33 +0100
Subject: [PATCH] Fix printing from Lua DSP context (#9202)

---
 libs/ardour/luaproc.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libs/ardour/luaproc.cc b/libs/ardour/luaproc.cc
index 86b938b419..a959b8f4da 100644
--- a/libs/ardour/luaproc.cc
+++ b/libs/ardour/luaproc.cc
@@ -203,7 +203,11 @@ LuaProc::lua_print (std::string s) {
 #ifndef NDEBUG
 	std::cout << "LuaProc: " << s << "\n";
 #endif
-	PBD::info << "LuaProc: " << s << "\n";
+	/* This is dangerous and can lead to crashes.A
+	 * PBD::Transmitter is neither thread-safe nor rt-safe.
+	 * (see also fe0e997335c34af0d71e7536fd507e1cab322d24)
+	 */
+	PBD::info << "LuaProc: " << s << endmsg;
 }
 
 bool