[Swig-devel] [ swig-Bugs-2887254 ] SWIG_Lua_typename uses the wrong stack index

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Bugs item #2887254, was opened at 2009-10-27 15:41
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Category: lua
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: https://www.google.com/accounts ()
Assigned to: Mark Gossage (mgossage)
Summary: SWIG_Lua_typename uses the wrong stack index

Initial Comment:
The SWIG generated function "SWIG_Lua_typename" is using the wrong stack index when retrieving userdata from the Lua runtime.  The following line (luarun.swg ~line 669) attempts to convert index 1 to a userdata.

    usr=(swig_lua_userdata*)lua_touserdata(L,1);  /* get data */

This will only work if the requested object is on top of the stack. Since you pass in the index, this should read:

    usr=(swig_lua_userdata*)lua_touserdata(L,tp);  /* get data */


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You can respond by visiting: 
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