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Assert thrown calling basic C++ function

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	Assert thrown calling basic C++ function by Brian Hughes-3 :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Some parts of this message have been removed. Learn more about Nabble's security policy. Hello everyone, I’m a new user to both Lua and LuaBind, so I’m hoping I’m just making a simple mistake in my program! I’m implanting Lua/LuaBind into an existing codebase. I’m starting by doing a very basic test of calling a global C++ function from within a lua script. Nothing fancy, however it is throwing an assert trying to call the function. I do all of the setup (open lua state, open lua libs, open luabind), then define my function as follows: luabind::module(gScriptManager->GetState()) [ luabind::def("sayhello", &sayhello) ]; Where sayhello is quite basic: void sayhello(void) { return; } However, when I try to run a script that only has: sayhello() in it, luaL_dofile returns a value of 1 (some error, which is supposedly a YIELD error?), and when I use Decoda to debug Lua, it is throwing an assert when it tries to call the function. I’m using Lua 5.1.4 with LuaBind 0.8.1 on MS Visual Studio 2005. I have a GameDev.net thread, but no solution so far: http://www.gamedev.net/community/forums/topic.asp?topic_id=542683 Thanks to anyone who can help! Sincerely, ~Brian “Iced_Eagle” Hughes ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ luabind-user mailing list luabind-user@... https://lists.sourceforge.net/lists/listinfo/luabind-user
	Re: Assert thrown calling basic C++ function by Daniel Wallin-4 :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message On 7/29/09 1:11 AM, Brian Hughes wrote: > Hello everyone, > > I’m a new user to both Lua and LuaBind, so I’m hoping I’m just making a > simple mistake in my program! I’m implanting Lua/LuaBind into an > existing codebase. > > > I’m starting by doing a very basic test of calling a global C++ function > from within a lua script. Nothing fancy, however it is throwing an > assert trying to call the function. > > > I do all of the setup (open lua state, open lua libs, open luabind), > then define my function as follows: > > luabind::module(gScriptManager->GetState()) > [ > luabind::def("sayhello", &sayhello) > ]; > > > > Where sayhello is quite basic: > > > void sayhello(void) > { > return; > } > > However, when I try to run a script that only has: sayhello() in it, > luaL_dofile returns a value of 1 (some error, which is supposedly a > YIELD error?), and when I use Decoda to debug Lua, it is throwing an > assert when it tries to call the function. Where does it assert? > I’m using Lua 5.1.4 with LuaBind 0.8.1 on MS Visual Studio 2005. How are you building luabind? It can obviously handle this basic usage, so it doesn't seem very likely it's a bug in the library. Can you supply the complete failing code (C++ and Lua) please? -- Daniel Wallin BoostPro Computing http://www.boostpro.com ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ luabind-user mailing list luabind-user@... https://lists.sourceforge.net/lists/listinfo/luabind-user
	Re: Assert thrown calling basic C++ function by Brian Hughes-3 :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Hi Daniel, It asserts when Lua attempts to call the function in the script (it's only a one line script of calling the function). I have the luabind header included in my project for compiling, and I'm linking to a pre-built static library that I made. Here are the relevant parts of the code (due to the project's size, I can't give everything from A-Z but I don't believe any other parts of code such as the rendering pipeline would cause an issue as it doesn't even touch this stuff). Loading Lua/Luabind: int ScriptingManager::InitLua() { // Open Lua m_luaState = lua_open(); // Load basic libraries luaL_openlibs(m_luaState); // Open LuaBind luabind::open(m_luaState); if(m_luaState == NULL) return -1; else return 0; // Success! } Defining of function in code, run once: luabind::module(GetState()) [ luabind::def("sayhello", &sayhello) ]; Sayhello function, defined in the global namespace: void sayhello(void) { return; } How I'm running my script: void ScriptingManager::Run(const char* script) { int ret = luaL_dofile(m_luaState, script); if(ret != 0) { if(!lua_isstring(m_luaState, lua_gettop(m_luaState))) { return; } std::string errorString = lua_tostring(m_luaState, lua_gettop(m_luaState)); lua_pop(m_luaState, 1); } } Test.lua (script I'm running) is simply: Sayhello() luaL_dofile returns 1 errorString contains the value of: "void ðºsayhello()" Without quotations however. Thanks for replying! ~Brian Hughes > -----Original Message----- > From: Daniel Wallin [mailto:daniel@...] > Sent: Wednesday, July 29, 2009 1:04 AM > To: luabind-user@... > Subject: Re: [luabind] Assert thrown calling basic C++ function > > On 7/29/09 1:11 AM, Brian Hughes wrote: > > Hello everyone, > > > > Im a new user to both Lua and LuaBind, so Im hoping Im just making > > a simple mistake in my program! Im implanting Lua/LuaBind into an > > existing codebase. > > > > > > Im starting by doing a very basic test of calling a global C++ > > function from within a lua script. Nothing fancy, however it is > > throwing an assert trying to call the function. > > > > > > I do all of the setup (open lua state, open lua libs, open luabind), > > then define my function as follows: > > > > luabind::module(gScriptManager->GetState()) > > [ > > luabind::def("sayhello", &sayhello) > > ]; > > > > > > > > Where sayhello is quite basic: > > > > > > void sayhello(void) > > { > > return; > > } > > > > However, when I try to run a script that only has: sayhello() in it, > > luaL_dofile returns a value of 1 (some error, which is supposedly a > > YIELD error?), and when I use Decoda to debug Lua, it is throwing an > > assert when it tries to call the function. > > Where does it assert? > > > Im using Lua 5.1.4 with LuaBind 0.8.1 on MS Visual Studio 2005. > > How are you building luabind? It can obviously handle this basic usage, so it > doesn't seem very likely it's a bug in the library. Can you supply the complete > failing code (C++ and Lua) please? > > -- > Daniel Wallin > BoostPro Computing > http://www.boostpro.com > > ---------------------------------------------------------------------------- -- > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus on > what you do best, core application coding. Discover what's new with Crystal > Reports now. http://p.sf.net/sfu/bobj-july > _______________________________________________ > luabind-user mailing list > luabind-user@... > https://lists.sourceforge.net/lists/listinfo/luabind-user ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ luabind-user mailing list luabind-user@... https://lists.sourceforge.net/lists/listinfo/luabind-user