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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. Rich Felker‏ @RichFelker 20 Nov 2015

      Rich Felker Retweeted Daniel J. Bernstein

      I'll take "sloppy" over "unstable, lacking direction, and full of feature creep" any day.https://twitter.com/hashbreaker/status/667845317325361152 …

      Rich Felker added,

      Daniel J. Bernstein @hashbreaker
      The C "standard" is an unstable series of sloppy documents that have never accurately documented the needs of typical real-world C code.
      1 reply 0 retweets 3 likes
    2. CopperheadOS‏ @CopperheadOS 20 Nov 2015
      Replying to @RichFelker

      @RichFelker Lots of the flaws are just inherent in the niche. Optimizing compilers combined with a pervasively unsafe low-level language.

      2 replies 1 retweet 1 like
    3. CopperheadOS‏ @CopperheadOS 20 Nov 2015
      Replying to @CopperheadOS

      @RichFelker There's the option of using -fwrapv, -fno-strict-aliasing and various subsets of UBSan to get a saner version of the language.

      2 replies 0 retweets 0 likes
    4. Rich Felker‏ @RichFelker 20 Nov 2015
      Replying to @CopperheadOS

      @CopperheadSec There is nothing "sane" about writing code that contains aliasing. It DOES NOT HAPPEN unless you do utterly idiotic things.

      1 reply 0 retweets 0 likes
    5. CopperheadOS‏ @CopperheadOS 20 Nov 2015
      Replying to @RichFelker

      @RichFelker It's easy to fall into the trap of doing something like using uint8_t instead of char and breaking the aliasing rules.

      2 replies 0 retweets 0 likes
    6. CopperheadOS‏ @CopperheadOS 20 Nov 2015
      Replying to @CopperheadOS

      @RichFelker Aliasing is used everywhere in C. It's often well-defined, but few C programmers have a good grasp of which case is which.

      2 replies 0 retweets 0 likes
    7. Rich Felker‏ @RichFelker 20 Nov 2015
      Replying to @CopperheadOS

      @CopperheadSec "Everywhere" is an exaggeration. Vast majority of uses are just crap code, with no valid excuse for using aliasing.

      1 reply 0 retweets 0 likes
    8. CopperheadOS‏ @CopperheadOS 20 Nov 2015
      Replying to @RichFelker

      @RichFelker Yes, 99% of cases are just bad code. In some rare cases, it's actually important for performance. It's really pervasive though.

      1 reply 0 retweets 0 likes
    9. Rich Felker‏ @RichFelker 20 Nov 2015
      Replying to @CopperheadOS

      @CopperheadSec I don't buy the claims of pervasiveness without evidence. Something like analysis of a whole dist with known-crapware removed

      2 replies 0 retweets 0 likes
    10. Rich Felker‏ @RichFelker 20 Nov 2015
      Replying to @RichFelker

      @CopperheadSec I deal with source for a lot of FOSS programs and do not regularly encounter aliasing issues except in decades-old crap.

      2 replies 0 retweets 0 likes
      Rich Felker‏ @RichFelker 20 Nov 2015

      @CopperheadSec The most recent one I remember, the infamous av_freep issue, was not even just aliasing but comb w/other invalid assumptions.

      11:00 PM - 20 Nov 2015
      0 replies 0 retweets 0 likes

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