Re: string.dump the same function is not equal?

[Жаботинский Евгений <evg-zhabotinsky@...>]

Coda Highland <chighland@gmail.com>:

On Thu, Jan 31, 2019 at 12:28 PM Rodrigo Azevedo <rodrigoams@gmail.com> wrote:

 Anyone could tell me why the code below returns 'false', when I
 expected a 'true' instead. Tested with lua5.2, lua5.3 and
 lua5.4-work2.

 -----
 local f1 = string.dump(function(x) x=x+1 return x end,true)
 local f2 = string.dump(function(x) x=x+1 return x end,true)
 print(f1 == f2)
 -----

 Thanks!
 --
 Rodrigo Azevedo Moreira da Silva

Because f2 includes f1 in its upvalues, so they have different contexts.

/s/ Adam

Huh? I thought only actually used vars were captured as upvalues. At least from performance / memory usage standpoint that would be common sense.

My guess is that debug information (at least line numbers) is different, but I didn't check it.

-- Evgeniy Zhabotinskiy