Re: bug report: LUA compiler glitch
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- Subject: Re: bug report: LUA compiler glitch
- From: Ross Andrews <ross.andrews@...>
- Date: Tue, 9 Aug 2011 18:12:30 -0500
By "order of assignment is undefined", does it mean that the order in which values are put in variables is undefined, or the order in which the right-hand side is evaluated is undefined?
Here's why I'm asking: if it's the latter, then this:
a, b = 1, 2
Could mean either:
a = 1
b = 2
or
b = 2
a = 1
Which means that this:
os.execute_without_echo, os.execute = os.execute, os.execute_with_echo
Will either work or not, arbitrarily (it does seem to work in 5.1.4).
On Tue, Aug 9, 2011 at 6:04 PM, Javier Guerra Giraldez
<javier@guerrag.com> wrote:
On Tue, Aug 9, 2011 at 5:58 PM, HyperHacker <
hyperhacker@gmail.com> wrote:
> Given this and that Lua
> seems to be a stack-based language
(on the current topic, I obviously agree with everybody that order of
assignment is undefined behavior, so can't be a bug)
--
Javier