Re: How to pass arguments to argv function effectively in Lua C API

[Alexander Gladysh <agladysh@...>]

On Thu, Mar 24, 2011 at 15:26, Tony Finch <dot@dotat.at> wrote:
> Tony Finch <dot@dotat.at> wrote:

>>   /* lay out all the arrays within a userdata object */
>>   args = lua_newuserdata(L, total);
>>   argv = (void *)(args + args_size);
>>   argl = (void *)(args + args_size + argv_size);

> Er, sorry, that can screw up the alignment restrictions.
> Try this instead:

>  args = lua_newuserdata(L, total);
>  argv = (void *)args; args += argv_size;
>  argl = (void *)args; args += argl_size;

Thank you!

I think that I will stick to Luiz suggestion with keeping limited size
arrays on stack, but your solution sure beats what I wrote, and if I
will need to allocate arrays dynamically, I'll use it.

Alexander.