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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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    Rich Felker‏ @RichFelker 18 Apr 2017

    TIL node.js exposes struct stat and "rounds" (64-bit integer) inode numbers to IEEE doubles (53 bits)...https://github.com/nodejs/node/issues/12115 …

    12:50 PM - 18 Apr 2017
    • 213 Retweets
    • 262 Likes
    • Kalle Hallivuori Mathieu Simon Jeremy Bae Bob Aman Asutosh J G Rob Ruana Jorge Santos Wil Lee Mark Longair
    18 replies 213 retweets 262 likes
      1. Rich Felker‏ @RichFelker 18 Apr 2017
        Replying to @RichFelker

        Rich Felker Retweeted Rich Felker

        Next thing you know they'll be "rounding" password hashes and session tokens...https://twitter.com/RichFelker/status/854421890135461890 …

        Rich Felker added,

        Rich Felker @RichFelker
        TIL node.js exposes struct stat and "rounds" (64-bit integer) inode numbers to IEEE doubles (53 bits)... https://github.com/nodejs/node/issues/12115 …
        0 replies 17 retweets 44 likes
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      1. New conversation
      2. (spooky) John  🎃  🕸  👻‏ @b3_john 18 Apr 2017
        Replying to @RichFelker

        This is actually a shortcoming of JavaScript. Node.js is just along for the ride.

        1 reply 0 retweets 6 likes
      3. Rich Felker‏ @RichFelker 18 Apr 2017
        Replying to @b3_john

        Well it's a matter of node.js using the wrong type.

        0 replies 0 retweets 3 likes
      4. End of conversation
      1. New conversation
      2. Dan Zimmerman‏ @DanZimm 19 Apr 2017
        Replying to @RichFelker

        iirc that’s a JS specification, not a choice by node

        1 reply 0 retweets 0 likes
      3. Rich Felker‏ @RichFelker 19 Apr 2017
        Replying to @DanZimm

        No, it's a wrong choice of type. If the language's numbers are doubles, you can't use numbers to store inodes. Same error as ptr->int in C.

        1 reply 0 retweets 5 likes
      4. Dan Zimmerman‏ @DanZimm 19 Apr 2017
        Replying to @RichFelker

        that’s a fair point

        0 replies 0 retweets 0 likes
      5. End of conversation
      1. New conversation
      2. Alejandro Oviedo @ NodeConf Argentina‏ @a0viedo 18 Apr 2017
        Replying to @RichFelker

        this is about safe integers in JS and not specific to node.js http://2ality.com/2013/10/safe-integers.html …

        1 reply 2 retweets 5 likes
      3. Spooky Kuklau‏ @chucker 18 Apr 2017
        Replying to @a0viedo @RichFelker

        no, this is about node choosing an inappropriate data type

        1 reply 0 retweets 10 likes
      4. Alejandro Oviedo @ NodeConf Argentina‏ @a0viedo 18 Apr 2017
        Replying to @chucker @RichFelker

        well the issue with inode indeed is, but I was referring to the rounding mentioned before

        1 reply 0 retweets 0 likes
      5. Spooky Kuklau‏ @chucker 18 Apr 2017
        Replying to @a0viedo

        .@a0viedo the bizarre part is 1) it took this long to notice, and 2) some proposals, like “let’s just hash the ID”, are terrible

        0 replies 0 retweets 2 likes
      6. End of conversation
      1. New conversation
      2. Jordan Rose‏ @UINT_MIN 18 Apr 2017
        Replying to @RichFelker

        AAAAAAAAAAAAAAAAAAAAA—

        1 reply 0 retweets 12 likes
      3. Russ Bishop‏ @xenadu02 18 Apr 2017
        Replying to @UINT_MIN @RichFelker

        Hahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahah.... everything is shit. Now I made myself sad 😞

        0 replies 0 retweets 2 likes
      4. End of conversation
      1. William D. Jones‏ @cr1901 18 Apr 2017
        Replying to @RichFelker

        This is an interesting form of compression- store 2^64 possible combinations in the space of 2^53 :D!

        0 replies 0 retweets 15 likes
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      1. 𝚠𝚒𝚕 𝚜𝚙𝚘𝚘𝚔𝚕𝚎𝚢‏Verified account @wilshipley 18 Apr 2017
        Replying to @RichFelker @siracusa

        JavaScript is SUCH a great language.

        0 replies 1 retweet 2 likes
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      1. Johannes Schriewer‏ @dunkelstern 19 Apr 2017
        Replying to @RichFelker

        if you want to laugh hard: try bit operations on a 64 bit number (and, or, bis shifts, etc.).

        0 replies 0 retweets 3 likes
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      1. Andrew Slough‏ @andyjss 18 Apr 2017
        Replying to @RichFelker @puffnfresh

        wtf:"There really is no good solution for this until JS gets 64-bit types. IIRC this isn't the only place where node hopes for the best ..."

        0 replies 1 retweet 1 like
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      1. trap15  🎃 A.Marshall‏ @trap0xf 18 Apr 2017
        Replying to @RichFelker

        NO

        0 replies 0 retweets 3 likes
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      1. Juan Pizarro‏ @hcpizzi 18 Apr 2017
        Replying to @RichFelker

        I would laugh, but I worked with someone who did the same thing with 32bit pointers and floats. at least that code never went out to users

        0 replies 0 retweets 1 like
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      1. sam boyer‏ @sdboyer 19 Apr 2017
        Replying to @RichFelker

        this is fine

        0 replies 0 retweets 0 likes
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      1. Ruben Kelevra‏ @RubenKelevra 18 Apr 2017
        Replying to @RichFelker @SchwarzeLocke

        Outch.

        0 replies 0 retweets 0 likes
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