OP_CLOSURE in 5.2

[YuanLin <yuanlin2008@...>]

Hi all,

There is a question about the code generation of OP_CLOSURE instruction. 

I've read the code about it(lparser.c ln 517). An expdesc was filled with "VRELOCABLE" and the "OP_CLOSURE" instruction, but the target register of the instruction was filled with "nextreg" immediatly. 

For the example code:

===============

local a;

a = function() end;

===============

The code generated was:

===============

        1       [1]     LOADNIL         0 0

        2       [2]     CLOSURE         1 0     ; 0x80049078

        3       [2]     MOVE            0 1

        4       [2]     RETURN          0 1

===============

It seemed that we can not store the closure directly to local var "a".

Why not keep the expdesc as "VRELOCABLE" and patch the target register later?