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pcwalton's profile
Patrick Walton
Patrick Walton
Patrick Walton
@pcwalton

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Patrick Walton

@pcwalton

Research engineer at Mozilla

San Francisco, CA
pcwalton.github.io
Joined November 2009

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    Patrick Walton‏ @pcwalton 7 Dec 2019
    • Report Tweet
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    Patrick Walton Retweeted Aleksey Shipilëv

    An often-overlooked reason why memory safety is important.https://twitter.com/shipilev/status/1203437299226284033 …

    Patrick Walton added,

    Aleksey Shipilëv @shipilev
    Replying to @shipilev @erikcorry
    Separately, it is morbidly amusing how many think the worst case is segfault or some sort of security exploit. My nightmare is software corrupting (my medical, financial, personal) data and then persisting that corruption everywhere with no way to recover later.
    10:23 PM - 7 Dec 2019
    • 16 Retweets
    • 78 Likes
    • Brendan Zabarauskas Kevin Cantú Mark S. Miller Not a Kitteh Mario Pastorelli Mike Abundo Random Firefox User Michael Haufe Matthew Markland
    5 replies 16 retweets 78 likes
      1. New conversation
      2. Bill Ticehurst‏ @billticehurst 8 Dec 2019
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        Replying to @pcwalton

        We often get automated crash reports that, best we can tell, are just random bit flips (cosmic rays, hardware failure, rowhammer?🤷‍♂️, ...). And I cant help but think, “How do computers run world like this?” 😳

        1 reply 0 retweets 2 likes
      3. Matt Denton‏ @MattDenton 8 Dec 2019
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        Replying to @billticehurst @pcwalton

        Seriously—Chrome gets “invalid free” bugs from GWP-ASAN with surprising regularity, which happen apparently due to bit flips in the pointer being freed. It’s crazy.

        2 replies 0 retweets 0 likes
      4. 2 more replies
      1. New conversation
      2. Tony “Abolish ICE” Arcieri  🦀‏ @bascule 7 Dec 2019
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        Replying to @pcwalton @fugueish

        You'd think memory safety would go without saying in any sort of "high assurance" application, but it is surprisingly still controversial

        2 replies 0 retweets 9 likes
      3. ʟʟoɢiq‏ @llogiq 8 Dec 2019
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        Replying to @bascule @pcwalton @fugueish

        I recently had someone explain to me that memory safety was 'table stakes'. Oh sweet summer child...

        0 replies 0 retweets 1 like
      4. End of conversation
      1. Elazar Leibovich‏ @elazarl 7 Dec 2019
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        Replying to @pcwalton

        Elazar Leibovich Retweeted Elazar Leibovich

        https://twitter.com/elazarl/status/1203559353644716032 …

        Elazar Leibovich added,

        Elazar Leibovich @elazarl
        Replying to @shipilev @erikcorry
        Just what I had in mind! OTOH, non malicious bug shouldn't cause too much trouble, since design of critical software should assume each part would fail. This corruption is more likely to be exhibited by a bug than by race, and if your design fails by bug, you have bigger problems
        0 replies 0 retweets 1 like
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      1. New conversation
      2. Constructive lawlessness‏ @TheEpsylon 8 Dec 2019
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        Replying to @pcwalton

        From one of the links in that thread: https://en.wikipedia.org/wiki/Go_(programming_language)#Lack_of_race_condition_safety … " Instead of language support, safe concurrent programming thus relies on conventions;...

        1 reply 0 retweets 0 likes
      3. Constructive lawlessness‏ @TheEpsylon 8 Dec 2019
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        Replying to @TheEpsylon @pcwalton

        ... for example, Chisnall recommends an idiom called "aliases xor mutable", meaning that passing a mutable value (or pointer) over a channel signals a transfer of ownership over the value to its receiver." If only there was a way to design a language to handle that automatically

        1 reply 0 retweets 1 like
      4. 1 more reply
      1. Roberto Clapis  🏳️‍🌈⚤ 🇪🇺 🇮🇹 🇨🇭‏ @empijei 7 Dec 2019
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        Replying to @pcwalton

        This cannot be overstated enough and will probably be ignored for years to come.

        0 replies 0 retweets 0 likes
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