From 8bfc599697b88a68e758f56923710e7b4c780655 Mon Sep 17 00:00:00 2001
From: Bram Matthys <syzop@vulnscan.org>
Date: Sat, 28 Mar 2026 10:35:05 +0100
Subject: [PATCH] Guard against EfunctionAdd() from outside MOD_TEST. As this
 can keep someone busy for half an hour wondering why things crash...

---
 src/api-efunctions.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/api-efunctions.c b/src/api-efunctions.c
index 3b87dc8d8..5f5108bf3 100644
--- a/src/api-efunctions.c
+++ b/src/api-efunctions.c
@@ -202,6 +202,15 @@ Efunction *EfunctionAddMain(Module *module, EfunctionType eftype, int (*func)(),
 			module->errorcode = MODERR_INVALID;
 		return NULL;
 	}
+
+	if (loop.config_status != CONFIG_STATUS_TEST)
+	{
+		unreal_log(ULOG_ERROR, "module", "BUG_EFUNCTIONADD_NOT_MOD_TEST", NULL,
+		           "[BUG] EfunctionAdd() called by module '$module_name' outside of MOD_TEST().",
+		           log_data_string("module_name", module->header->name));
+		module->errorcode = MODERR_INVALID;
+		return NULL;
+	}
 	
 	p = safe_alloc(sizeof(Efunction));
 	if (func)