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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. whitequark‏ @whitequark 26 Apr 2016

      WG14: C pointer values are explicitly *not* simple bit patterns; they can well be path-dependent http://www.open-std.org/JTC1/SC22/WG14/www/docs/n2012.htm#clarifying-the-c-memory-object-model-pointer-provenance …

      4 replies 1 retweet 7 likes
    2. Pumpkin Fright 👨‍⚕️ 🍕‏Verified account @DrPizza 26 Apr 2016
      Replying to @whitequark

      @whitequark ... then it must treat all pointers as if aliased, and not try to do any fancy/stupid/annoying optimizations.

      1 reply 0 retweets 0 likes
    3. whitequark‏ @whitequark 26 Apr 2016
      Replying to @DrPizza

      @DrPizza you've invented -fno-strict-aliasing

      3 replies 0 retweets 0 likes
    4. Pumpkin Fright 👨‍⚕️ 🍕‏Verified account @DrPizza 26 Apr 2016
      Replying to @whitequark

      @whitequark at least, I don't think? But still, even if -fno-strict-aliasing were mandated in the standard, would that be bad?

      1 reply 0 retweets 0 likes
      Rich Felker‏ @RichFelker 26 Apr 2016
      Replying to @DrPizza

      @DrPizza @whitequark Yes. GCC should rename -fno-strict-aliasing to -fno-vectorization so people stop repeating this mistake.

      3:14 PM - 26 Apr 2016
      3 replies 0 retweets 0 likes
        1. New conversation
        2. Pumpkin Fright 👨‍⚕️ 🍕‏Verified account @DrPizza 26 Apr 2016
          Replying to @RichFelker

          @RichFelker @whitequark if I want vectorization I have SIMD intrinsics.

          1 reply 0 retweets 0 likes
        3. Rich Felker‏ @RichFelker 26 Apr 2016
          Replying to @DrPizza

          @DrPizza @whitequark Uhg. The whole purpose of optimizing compilers is to keep people from writing asm or equivalent monstrosities.

          2 replies 0 retweets 0 likes
        4. Pumpkin Fright 👨‍⚕️ 🍕‏Verified account @DrPizza 26 Apr 2016
          Replying to @RichFelker

          @RichFelker @whitequark I think "not creating bugs induced by weird and unexpected standard behaviour" is a bigger priority.

          1 reply 0 retweets 0 likes
        5. whitequark‏ @whitequark 26 Apr 2016
          Replying to @DrPizza

          @DrPizza @RichFelker C is not a language made for you. The goals of WG14 do not align with your goals. What's left to discuss?

          3 replies 0 retweets 0 likes
        6. Pumpkin Fright 👨‍⚕️ 🍕‏Verified account @DrPizza 26 Apr 2016
          Replying to @whitequark

          @whitequark @RichFelker We all have to live on an Internet written with C programs.

          1 reply 0 retweets 0 likes
        7. whitequark‏ @whitequark 26 Apr 2016
          Replying to @DrPizza

          @DrPizza @RichFelker no. we don't. and you know what? even if gcc reverts to 2.95, this will not appreciably...

          2 replies 0 retweets 0 likes
        8. whitequark‏ @whitequark 26 Apr 2016
          Replying to @whitequark

          @DrPizza @RichFelker increase the correctness of Internet-of-crappy-C. The only solution is to kill C.

          1 reply 0 retweets 0 likes
        9. Pumpkin Fright 👨‍⚕️ 🍕‏Verified account @DrPizza 26 Apr 2016
          Replying to @whitequark

          @whitequark @RichFelker that seems even less likely than reforming C to me.

          1 reply 0 retweets 0 likes
        10. 3 more replies
        1. Pumpkin Fright 👨‍⚕️ 🍕‏Verified account @DrPizza 26 Apr 2016
          Replying to @RichFelker

          @RichFelker @whitequark actually screw that

          0 replies 0 retweets 0 likes
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        1. Pumpkin Fright 👨‍⚕️ 🍕‏Verified account @DrPizza 26 Apr 2016
          Replying to @RichFelker

          @RichFelker @whitequark if I want vectorization, I have restrict.

          0 replies 0 retweets 0 likes
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