Crashing in lua_open

higgins01

I have a large C++ program (sprgen.exe) that I linked the Lua 5.0.2 sources into. Not a game, I use Lua to do some image processing simulations. I'd like to have a nice debugger and decoda looks great. But when I start up my program from decoda I get "Unhandled exception at ... in sprgen.exe: ...: Access violation reading location ...". It looks like it happens just after returning from lua_open, the decoda output says VM created.
They say "without making any code changes" but I would gladly change my code if it would make it play with decoda. But I don't know where to start.

Max

<!--quoteo(post=1679105:date=May 21 2008, 12:43 PM:name=higgins01)--><div class='quotetop'>QUOTE(higgins01 @ May 21 2008, 12:43 PM) <a href="index.php?act=findpost&pid=1679105"><{POST_SNAPBACK}></a></div><div class='quotemain'><!--quotec-->I have a large C++ program (sprgen.exe) that I linked the Lua 5.0.2 sources into. Not a game, I use Lua to do some image processing simulations. I'd like to have a nice debugger and decoda looks great. But when I start up my program from decoda I get "Unhandled exception at ... in sprgen.exe: ...: Access violation reading location ...". It looks like it happens just after returning from lua_open, the decoda output says VM created.
They say "without making any code changes" but I would gladly change my code if it would make it play with decoda. But I don't know where to start.<!--QuoteEnd--></div><!--QuoteEEnd-->
Is there any way you could send us the application you are trying to debug, either in binary or source code form? My e-mail is max@unknownworlds.com.

Max

For the sake of the archives, this problem was caused by the fact the application being debugged was compiled with a structure alignment of 1 byte which caused Decoda to crash when attempting to emulate lua_pushthread for Lua 5.0. The bug is fixed in the next release (Decoda 1.10).