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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 7 Nov 2016
      Replying to @RichFelker

      From a usable security standpoint, an API that /looks just like/ one where sizeof works, but where it's wrong, is utterly awful.

      2 replies 0 retweets 0 likes
    2. Rich Felker‏ @RichFelker 7 Nov 2016
      Replying to @RichFelker

      Functions like swprintf probably should have taken a buffer size, not a [wchar_t/whatever] count.

      1 reply 0 retweets 0 likes
    3. Jordan Rose‏ @UINT_MIN 7 Nov 2016
      Replying to @RichFelker

      That makes it harder to access the last-written location.

      1 reply 0 retweets 0 likes
    4. Rich Felker‏ @RichFelker 7 Nov 2016
      Replying to @UINT_MIN

      I don't follow. The return value would still be a wchar_t count.

      1 reply 0 retweets 0 likes
    5. Jordan Rose‏ @UINT_MIN 7 Nov 2016
      Replying to @RichFelker

      Er, in that case it means I can't subtract it from the buffer size.

      1 reply 0 retweets 0 likes
    6. Jordan Rose‏ @UINT_MIN 7 Nov 2016
      Replying to @UINT_MIN @RichFelker

      If I were to change something here, it would be sizeof, which does the "wrong" thing for pointers too.

      1 reply 0 retweets 0 likes
    7. Rich Felker‏ @RichFelker 7 Nov 2016
      Replying to @UINT_MIN

      You can differ all you like philosophically but it doesn't mitigate danger of interfaces that look like they take a size

      1 reply 0 retweets 0 likes
    8. Rich Felker‏ @RichFelker 7 Nov 2016
      Replying to @RichFelker @UINT_MIN

      How many people even know if swprintf takes a size or wchar_t count without looking it up?

      1 reply 0 retweets 0 likes
    9. Jordan Rose‏ @UINT_MIN 7 Nov 2016
      Replying to @RichFelker

      I posit that if there's a choice, "count" is always the right answer. Other langs don't even have access to byte-size.

      1 reply 0 retweets 1 like
    10. Rich Felker‏ @RichFelker 7 Nov 2016
      Replying to @UINT_MIN

      Well you can't remove sizes from C without having a radically different language (no Representation of Types).

      2 replies 0 retweets 0 likes
      Rich Felker‏ @RichFelker 7 Nov 2016
      Replying to @RichFelker @UINT_MIN

      Which wouldn't necessarily be a bad thing, but it's outside the scope of bad interface designs within the context of C.

      5:32 PM - 7 Nov 2016
      0 replies 0 retweets 0 likes

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