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Re: Perl is psychic?!

by petral (Curate)
on Mar 07, 2001 at 02:31 UTC ( #62603=note: print w/replies, xml ) Need Help??


in reply to Perl is psychic?!

This is something like another bug someone posted recently (I guess in the cb since I can't find it anywhere). Combining them just for fun:
> perl -lwe '() = ($_ = "abc") =~ /(c)/; $_ = "def"; print eval <>' $& f >
Seems as if there's a pointer squirrled away somewhere deep in perl that was never removed just because it was never accessed. When there's not supposed to be anything there (and isn't in the normal place), somehow this shows through.

update: Could note, of course, that these needn't be considered bugs. Just because a program does something apparently semi-sensible for 'undefined behavior' doesn't mean one _has_ to beat on the poor thing till it stops. If this were any language but Perl one would expect the compiler/interpreter to simply throw up (or at least throw up its hands). In perl, it just gets tossed into the "Doctor it hurts when I do this. -- Then don't do that" bin.

p

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[Veltro]: Eily That is just how life rolls. Sometimes you start doing something and only later you start to realize the consequece hehe
[Eily]: Discipulus well, $ for $calar makes sense, I don't know how we would explain the
[Discipulus]: i was given 20 pages of introduction to perl, in eatalian buy a guy who tech us hoou to set up a little linux network: I have to find him a give some red wine
[Discipulus]: it was 1999
[Veltro]: I started programming perl because of while(<>){ s/.../.../} One week later I was programming all kinds of different stuff.

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