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Re: _Bool and trap representations

From: Alexander Cherepanov <ch3root at openwall dot com>
To: Joseph Myers <joseph at codesourcery dot com>
Cc: Martin Sebor <msebor at gmail dot com>, gcc at gcc dot gnu dot org
Date: Tue, 14 Jun 2016 00:42:23 +0300
Subject: Re: _Bool and trap representations
Authentication-results: sourceware.org; auth=none
References: <5757BCD9 dot 9070407 at openwall dot com> <57582D90 dot 1080000 at gmail dot com> <575F0328 dot 7070905 at openwall dot com> <alpine dot DEB dot 2 dot 20 dot 1606131947001 dot 21659 at digraph dot polyomino dot org dot uk> <575F20C6 dot 4090309 at openwall dot com> <alpine dot DEB dot 2 dot 20 dot 1606132112180 dot 21659 at digraph dot polyomino dot org dot uk>

On 2016-06-14 00:13, Joseph Myers wrote:

On Tue, 14 Jun 2016, Alexander Cherepanov wrote:

The problem is that parts of representations of two different ordinary values
can form a trap representation.


Oh, you're talking about normalizing the destination rather than the
source of the copy?


Yes.

I don't see this problem with a current gcc so the problem ishypothetical AFAICT.


--
Alexander Cherepanov

References:
- _Bool and trap representations
  - From: Alexander Cherepanov
- Re: _Bool and trap representations
  - From: Martin Sebor
- Re: _Bool and trap representations
  - From: Alexander Cherepanov
- Re: _Bool and trap representations
  - From: Joseph Myers
- Re: _Bool and trap representations
  - From: Alexander Cherepanov
- Re: _Bool and trap representations
  - From: Joseph Myers

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