Re^3: regex bug in perl 5.8.7

In the future, you might want to use the (?{...}) form instead since that has no implications for compiling and interpolating another regexp.

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Comment on Re^3: regex bug in perl 5.8.7

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Re^4: regex bug in perl 5.8.7 by imp (Priest) on May 26, 2007 at 04:31 UTC
The regex that originally triggered the segfault was an attempt at a joke that used a modified version of the regex I wrote in this node. The joke was that someone in an irc channel at work said "<3", and someone else asked what the opposite of "<3" was. My response was `qr[(??{/^<3/?qr/\A\z/:qr//;})]` Which is this when written in a legible manner: `my $negative = qr[ (??{ /^<3/ ? qr/\A\z/ : qr//; }) ]x;` [download] Which segfaulted, but only when the text being searched started with '<3'. After a little exploration I found the minimal regex that still segfaulted, and posted about it.	[reply] [d/l] [select]

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Re^4: regex bug in perl 5.8.7
by imp (Priest) on May 26, 2007 at 04:31 UTC

this node

The joke was that someone in an irc channel at work said "<3", and someone else asked what the opposite of "<3" was. My response was qr[(??{/^<3/?qr/\A\z/:qr//;})]

Which is this when written in a legible manner:

my $negative = qr[ 
  (??{
    /^<3/ 
      ? qr/\A\z/ 
      : qr//;
  })
]x;
[download]

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