From 02523b1f90d8c3d971d0949c9b9efbde1b28896b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ricardo=20Lu=C3=ADs=20Vaz=20Silva?= <ricolvs123@gmail.com>
Date: Sun, 2 Mar 2025 16:58:37 -0300
Subject: [PATCH] restrict internal structs to gzdoom.pk3

---
 src/common/scripting/frontend/zcc_compile.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/common/scripting/frontend/zcc_compile.cpp b/src/common/scripting/frontend/zcc_compile.cpp
index fb49cf39a4..2eff4dab05 100644
--- a/src/common/scripting/frontend/zcc_compile.cpp
+++ b/src/common/scripting/frontend/zcc_compile.cpp
@@ -760,7 +760,14 @@ void ZCCCompiler::CreateStructTypes()
 
 		if (s->strct->Flags & ZCC_Internal)
 		{
-			s->strct->Type->TypeInternal = true;
+			if(fileSystem.GetFileContainer(Lump) == 0)
+			{
+				s->strct->Type->TypeInternal = true;
+			}
+			else
+			{
+				Error(s->strct, "Internal structs are only allowed in the root pk3");
+			}
 		}
 
 		auto &sf = s->Type()->ScopeFlags;