- fixed: A_GiveInventory should not try to give stuff to an owned inventory item, because it doesn't own its Inventory pointer - it is used for the linked list of the owner's inventory.

src/CMakeLists.txt

@@ -857,7 +857,6 @@ set( NOT_COMPILED_SOURCE_FILES
 	g_heretic/a_hereticartifacts.cpp
 	g_heretic/a_hereticweaps.cpp
 	g_heretic/a_ironlich.cpp
-	g_hexen/a_bats.cpp
 	g_hexen/a_bishop.cpp
 	g_hexen/a_blastradius.cpp
 	g_hexen/a_boostarmor.cpp

src/p_actionfunctions.cpp

@@ -2491,6 +2491,11 @@ static bool DoGiveInventory(AActor *receiver, bool orresult, VM_ARGS)
 	{ // If there's nothing to receive it, it's obviously a fail, right?
 		return false;
 	}
+	// Owned inventory items cannot own anything because their Inventory pointer is repurposed for the owner's linked list.
+	if (receiver->IsKindOf(RUNTIME_CLASS(AInventory)) && static_cast<AInventory*>(receiver)->Owner != nullptr)
+	{
+		return false;
+	}
 
 	if (amount <= 0)
 	{