From: Josef 'Jeff' Sipek <jeff.sipek@open-xchange.com>
Date: Thu, 10 Dec 2020 21:22:20 +0000 (-0500)
Subject: lib-lua: Warn if threading was detected
X-Git-Tag: 2.3.14.rc1~170
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b95b0f34f7d69ca661438e9164837cf1f63a094c;p=thirdparty%2Fdovecot%2Fcore.git

lib-lua: Warn if threading was detected
---

diff --git a/src/lib-lua/dlua-script.c b/src/lib-lua/dlua-script.c
index d5e8571809..d0899f0f50 100644
--- a/src/lib-lua/dlua-script.c
+++ b/src/lib-lua/dlua-script.c
@@ -7,6 +7,7 @@
 #include "str.h"
 #include "hex-binary.h"
 #include "eacces-error.h"
+#include "ioloop.h"
 #include "dlua-script-private.h"
 
 #include <fcntl.h>
@@ -96,6 +97,15 @@ struct dlua_script *dlua_script_from_state(lua_State *L)
 	lua_pop(L, 1);
 	i_assert(script != NULL);
 
+	if (script->L != L) {
+		static bool warned;
+
+		if (!warned) {
+			i_warning("detected threading in lua script - not supported");
+			warned = TRUE; /* warn only once */
+		}
+	}
+
 	return script;
 }