From 500cfc3746f6050e679144c759ae878ff34d4db8 Mon Sep 17 00:00:00 2001
From: Simon Robertshaw <simon@hardwired.org.uk>
Date: Sun, 31 Jul 2011 12:26:51 +0100
Subject: [PATCH] Lua has a garbage collector, it may dispose of strings while
 we're using them, make throw_error a little more safe

---
 src/luaconsole.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/luaconsole.c b/src/luaconsole.c
index 02ec11b8b..4c76f7121 100644
--- a/src/luaconsole.c
+++ b/src/luaconsole.c
@@ -143,9 +143,14 @@ int luatpt_test(lua_State* l)
 int luatpt_error(lua_State* l)
 {
 	char *error = "";
-	error = luaL_optstring(l, 1, 0);	
-	error_ui(vid_buf, 0, error);	
-    return 0;
+	error = mystrdup(luaL_optstring(l, 1, "Error text"));
+	if(vid_buf!=NULL){
+		error_ui(vid_buf, 0, error);
+		free(error);
+		return 0;
+	}
+	free(error);
+	return luaL_error(l, "Screen buffer does not exist");
 }
 int luatpt_drawtext(lua_State* l)
 {