Re: bug (really: assignment parser stack overflow)

[Mike Pall <mikelu-0708@...>]

Hi,

Anders Bergh wrote:
> On 7/31/07, Roberto Ierusalimschy <roberto@inf.puc-rio.br> wrote:
> > Mike Pall just reported the following bug:
> >
> > > $ ulimit -s 1024       # Reduce C stack to 1MB for quicker results
> > > $ lua -e 'local s = "a,"; for i=1,18 do s = s..s end print(loadstring("local a"..s.."a=nil", ""))'
> > > Segmentation fault
> > > $
> 
> I can't reproduce the bug, this is what happens here and on my x86_64 machine:

Gee .. a really cute cut'n'paste error which completely changes
the semantics. Umm, Roberto, this needs a space or semicolon at
the end of "local a ". My original mail included the space. :-)

Ok, so here's the same script without wrap-around problems:

  local s = "a,"
  for i=1,18 do s = s..s end
  print(loadstring("local a;"..s.."a=nil", ""))

Bye,
     Mike