in reply to Re: Regular Expressions: Call for Examples
in thread Regular Expressions: Call for Examples

There's no re-entry here. The regex engine has exited once the regex portion of the s/// ends. Once the right-hand side of the substitution is done, the regex engine starts again; it is not paused, though, it has stopped. Compare: "japhy" =~ m{.(?{ "perlmonk" =~ /./ }).}; Watch it explode.

_____________________________________________________
Jeff[japhy]Pinyan: Perl, regex, and perl hacker, who'd like a job (NYC-area)
s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;

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Re: Regular Expressions: Call for Examples
by Abigail-II (Bishop) on Jul 22, 2002 at 14:49 UTC
    That segfaults for me on 5.005_03, and 5.6.0, but not on 5.6.1 or 5.8.0. It seems to be fixed between 5.7.0 and 5.7.1. The former segfaults, the latter doesn't.

    Abigail

[reply]
      It died on my 5.6.1, but no matter -- just introduce some $1 in there, and it breaks on everything I have (5.8 included): 
      "japhy" =~ m{
  (
    .
    (?{ "perl" =~ /(.)/; print $1 })
    .
  )
  (?{ print $1 })
}x

      [download]

      _____________________________________________________
      Jeff[japhy]Pinyan: Perl, regex, and perl hacker, who'd like a job (NYC-area)
      s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;

[reply]
[d/l]

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