Question

I’m using LUA for a SDL project. I downloaded the precompiled LIB and DLL file from here (http://sourceforge.net/projects/luabinaries/files/5.2/Windows%20Libraries/Dynamic/) (lua-5.2_Win32_dll10_lib.zip) and have incorporated it into my project. When I build a debug build the application runs 100% fine. When I set it to release mode and press the Play button in Visual Studio it also runs fine.

BUT if I run the Release file by doubling clicking it in the folder I get the error c0000005 with the lua52.dll.

I’m running MicroSoft Visual C++ 2010 Express.

I went through deleting lines till it started working and the lines that causes the error are.

void aiBrainmanager::run(string holdData){

int errfunc = 0;
int s;
int s = luaL_loadstring(L, holdData.c_str());

if ( s==0 ) {
    s = lua_pcall(L, 0, LUA_MULTRET, errfunc);
}
if (errfunc !=0) {

}
if (s !=0) {

    aiBrainmanager::target->stopWorking();
}


}

Any idea what setting is wrong or how to fix it.

Answer 1

0xc0000005 is a memory violation. The fact that it works in debug, means a number possible things.

1. Memory is not being initialised or set correctly (in debug it’s initialed to 0) so string are terminated for example.
2. Memory requirements are larger than th buffers allow (in debug it could be padded).
3. You code is doing something different in debug than compile (#if etc.)

Looking at your code I would look at:

Why are you checking for error and then not doing anything?????

if (errfunc !=0) { 
 // What happens in here??????
} 

The lua_pcall function returns 0 in case of success or one of the
following error codes (defined in lua.h):

• LUA_ERRRUN: a runtime error.

• LUA_ERRMEM: memory allocation error. For such errors, Lua does not call the error handler function.

• LUA_ERRERR: error while running the error handler function

I think you’ll find you’re getting a LUA_ERRMEM