[Cryptography] The GOTO Squirrel! [was GOTO Considered Harmful]

Ray Dillinger bear at sonic.net
Tue Mar 4 17:38:01 EST 2014

Crap. No unreachable code warning in gcc anymore. 

I think that is an astonishing failure. 

As a developer, I rely on that warning because unreachable code is ALWAYS a mistake.  

-------- Original message --------
From: Nicolas Rachinsky <crypto-2 at ml.turing-complete.org> 
Date: 03/04/2014  04:23  (GMT-08:00) 
To: Bear <bear at sonic.net> 
Cc: dennis.hamilton at acm.org,'Cryptography' <cryptography at metzdowd.com> 
Subject: Re: [Cryptography] The GOTO Squirrel! [was GOTO Considered Harmful] 
* Bear <bear at sonic.net> [2014-03-03 11:04 -0800]:
> On Fri, 2014-02-28 at 17:03 -0800, Dennis E. Hamilton wrote:
> > 
> > A pretty-printer (or any IDE that reflows indentation) would point it out.  
> > 
> > So would a modern IDE that identifies unreachable code.  
> > 
> > Any practical code-coverage testing would reveal it too.
> Okay, I have to say this despite the complaints on this 
> list about how common TERRIBLE security practices may be.
> This is completely over the top.  There is no way that this
> could possibly be accidental.
> In point of fact, I know of no commonly used or commercially 
> sold compiler that fails to emit unreachable-code warnings 
> by default.  Therefore I do not believe that this could be 
> anything but deliberate.  I would be willing to state exactly 
> that in a court of law.

Ho about gcc?

|The -Wunreachable-code has been removed, because it was unstable:
|it relied on the optimizer, and so different versions of gcc would
|warn about different code.  The compiler still accepts and ignores
|the command line option so that existing Makefiles are not broken.
|In some future release the option will be removed entirely.

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