From 75f1d2e2596035f603558dced17e64238032ce2c Mon Sep 17 00:00:00 2001
From: Willem Jan Palenstijn
Date: Tue, 2 Feb 2016 01:21:28 +0100
Subject: SWORD25: Use more appropriate function for growing the stack

The call to lua_growstack in unpersistThread would unconditionally at
least double the size of the stack. This caused memory usage to grow
exponentially (literally) with the number of serialized threads.

Bugs #6977, #6999.
---
 engines/sword25/util/lua_unpersist.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'engines/sword25/util')

diff --git a/engines/sword25/util/lua_unpersist.cpp b/engines/sword25/util/lua_unpersist.cpp
index ef0ef31041..678ddb52db 100644
--- a/engines/sword25/util/lua_unpersist.cpp
+++ b/engines/sword25/util/lua_unpersist.cpp
@@ -425,7 +425,7 @@ void unpersistThread(UnSerializationInfo *info, int index) {
 
 	// First, deserialize the object stack
 	uint32 stackSize = info->readStream->readUint32LE();
-	lua_growstack(info->luaState, (int)stackSize);
+	lua_checkstack(info->luaState, (int)stackSize);
 
 	// Make sure that the first stack element (a nil, representing
 	// the imaginary top-level C function) is written to the very,
-- 
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