lua crashes on writing of a table inside of an userdata
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- Subject: lua crashes on writing of a table inside of an userdata
- From: Benjamin Kober <kober@...>
- Date: 2013年6月04日 14:25:42 +0200
Hi,
I'm trying to set a table that is part of an userdata. I inherit the
userdata from lua in this way:
lua_getglobal(L, "foo"); /* get the global lua table */
lua_getfield(L, -1, "new"); /* get the function from the table */
lua_insert(L, -2); /* move new up a position so self is the first arg */
lua_pcall(L, 1, 1, 0); /* call it, the returned table is left on the
stack */
c_foo->id = luaL_ref(L, LUA_REGISTRYINDEX);
Where the lua definition of foo.new is:
function foo.new()
local lfoo = {}
lfoo.table = {}
-- other methods and attributes
return lfoo
end
When I now open the lua shell and type
foo_var = cfoo.new() -- new c foo class inherited from lua
print(foo_var.table) -- read access is possible
foo_var.table["key"] = <anything> -- crashes the lua interpreter
Do you have any ideas why it shows this behavior? Could wrong garbage
handling in my c code be the reason?
Thanks in advance, Benjamin