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Re: decompile

From Keith Thompson <kst-u@mib.org>
Newsgroups comp.lang.c
Subject Re: decompile
Date 2012-06-08 14:15 -0700
Organization None to speak of
Message-ID <lnobotbj53.fsf@nuthaus.mib.org> (permalink)
References <4fd245b6$1@news.usenet4you.net>

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"Fred" <you@your.domain> writes:
> it is possible to decompile a program to c?

It's possible (though it may or may not be practical).  In other
words, for any executable, it should be possible to generate C code
that behaves the same way.

But don't expect the resulting C code to be legible or maintainable,
or to have any particular resemblance to the original code that
was compiled to produce the executable.  A lot of information,
such as variable names, is discarded during compilation, and you
can't reliably distinguish between a for loop, a while loop, and
a goto statement.  You can't unscramble an egg.

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
    Will write code for food.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"

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Thread

decompile "Fred" <you@your.domain> - 2012-06-08 20:34 +0200
  Re: decompile gazelle@shell.xmission.com (Kenny McCormack) - 2012-06-08 18:48 +0000
    Re: decompile "Rowan K. Fullack III" <nospam@nospam.com> - 2012-06-09 19:03 +0000
  Re: decompile James Kuyper <jameskuyper@verizon.net> - 2012-06-08 14:53 -0400
  Re: decompile Jean-Christophe <5.d@free.fr> - 2012-06-08 12:00 -0700
  Re: decompile Keith Thompson <kst-u@mib.org> - 2012-06-08 14:15 -0700
    Re: decompile Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-06-08 17:38 -0400
      Re: decompile Jean-Christophe <5.d@free.fr> - 2012-06-08 14:46 -0700
  Re: decompile Datesfat Chicks <datesfat.chicks@gmail.com> - 2012-06-08 21:27 -0400
  Re: decompile Kenneth Brody <kenbrody@spamcop.net> - 2012-06-09 10:47 -0400
    Re: decompile Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-06-09 19:10 +0100
    Re: decompile "BartC" <bc@freeuk.com> - 2012-06-09 19:22 +0100
      Re: decompile Kenneth Brody <kenbrody@spamcop.net> - 2012-06-11 09:17 -0400
        Re: decompile pete <pfiland@mindspring.com> - 2012-06-11 22:45 -0400
  Re: decompile Geoff <geoff@invalid.invalid> - 2012-06-09 08:26 -0700
    Re: decompile gwowen <gwowen@gmail.com> - 2012-06-11 02:01 -0700
  Re: decompile "Fred" <you@your.domain> - 2012-06-09 20:43 +0200
    Re: decompile Jean-Christophe <5.d@free.fr> - 2012-06-09 13:09 -0700
      Re: decompile Sorry you're right "Fred" <you@your.domain> - 2012-06-09 23:12 +0200
  Re: decompile John Bode <jfbode1029@gmail.com> - 2012-06-11 07:53 -0700
  Re: decompile Michael Angelo Ravera <maravera@prodigy.net> - 2012-06-13 13:20 -0700
  Re: decompile Dann Corbit <dcorbit@connx.com> - 2012-06-13 16:46 -0700
    Re: decompile gordonb.v9y2l@burditt.org (Gordon Burditt) - 2012-06-18 19:42 -0500

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