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RichFelker's profile
Rich Felker
Rich Felker
Rich Felker
@RichFelker

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Rich Felker

@RichFelker

Yeah, I do @musllibc, FOSS & infosec stuff. But now is not the time for a mostly-/only-tech Twitter feed.

musl-libc.org
Joined March 2014

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    1. friend void‏ @volatile_void 16 Feb 2016
      Replying to @ch3root

      @ch3root @RichFelker It is arbitrary! This is like GCC backtracking on UB from using uninitialized memory between 4.4.3 and 4.4.7, or…

      2 replies 0 retweets 0 likes
    2. friend void‏ @volatile_void 16 Feb 2016
      Replying to @volatile_void

      @ch3root @RichFelker backtracking from pointer comparison optimizations since https://lwn.net/Articles/278137/ … . They have no idea what they're doing

      1 reply 0 retweets 0 likes
    3. friend void‏ @volatile_void 16 Feb 2016
      Replying to @volatile_void

      @ch3root @RichFelker To them it's a game and benchmarks are the scoring system.

      1 reply 0 retweets 1 like
    4. Alexander Cherepanov‏ @ch3root 16 Feb 2016
      Replying to @volatile_void

      @spun_off @RichFelker Are you saying that aliasing analysis is not needed at all? Go tell it @bmastenbrook.

      1 reply 0 retweets 1 like
    5. Alexander Cherepanov‏ @ch3root 16 Feb 2016
      Replying to @ch3root

      @spun_off @RichFelker Or you have better solution than DR 260? Or what? I'm not sure which direction you are aiming at.

      1 reply 0 retweets 0 likes
    6. Rich Felker‏ @RichFelker 16 Feb 2016
      Replying to @ch3root

      @ch3root @spun_off I'm confused what you're asking. DR 260 is not even about aliasing but indeterminate value wackiness.

      1 reply 0 retweets 0 likes
    7. Alexander Cherepanov‏ @ch3root 16 Feb 2016
      Replying to @RichFelker

      @RichFelker @spun_off There are several issues in DR 260. And I think it was wrong to mix them.

      1 reply 0 retweets 0 likes
    8. Alexander Cherepanov‏ @ch3root 16 Feb 2016
      Replying to @ch3root

      @RichFelker @spun_off The part of DR 260 regarding instability of indet values seems to be more or less overrridden by DR 451.

      1 reply 0 retweets 1 like
    9. Alexander Cherepanov‏ @ch3root 16 Feb 2016
      Replying to @ch3root

      @RichFelker @spun_off But for the part about pointer provenance DR 260 still seems to be the authoritative source.

      1 reply 0 retweets 0 likes
    10. Alexander Cherepanov‏ @ch3root 16 Feb 2016
      Replying to @ch3root

      @RichFelker @spun_off "They may also treat pointers based on different origins as distinct even though they are bitwise identical."

      2 replies 0 retweets 0 likes
      Rich Felker‏ @RichFelker 16 Feb 2016
      Replying to @ch3root

      @ch3root @spun_off I'll accept that's valid for _pointers_. It's not valid for integers.

      6:10 PM - 16 Feb 2016
      1 reply 0 retweets 0 likes
        1. Alexander Cherepanov‏ @ch3root 16 Feb 2016
          Replying to @RichFelker

          @RichFelker @spun_off Yes, of course.

          0 replies 0 retweets 0 likes
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