Re: [ANN] Lua 5.2.0 (beta-rc1) now available

[Xavier Wang <weasley.wx@...>]

2011/6/14 steve donovan <steve.j.donovan@gmail.com>

On Tue, Jun 14, 2011 at 12:35 PM, David Given <dg@cowlark.com> wrote:
> @label: -- 0
> do
>  goto label
>  do
>    @label: -- 1
>  end
>  @label: -- 2
> end
>
> Does the goto jump to 0, 1, 2, or is this a compilation error?

Using the experimental method, it goes to the first label. In fact,
putting a 'goto label' in block 1 still goes to 0, which is a wee bit
surprising.

Of course (talking about code generation) first prize is if Lua
supported some kind of #line directive and truly become the C of
dynamic languages. But that might be a bit specialized ...

steve d.

But this program output:

0

2

:(

the code: 

@label: -- 0

print"0"

do

 goto label

 do

   @label: -- 1

   print"1"

 end

 @label: -- 2

 print"2"

end