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We Abandoned Matrix: The Dark Truth About User Security and Safety (2024)

https://forum.hackliberty.org/t/why-we-abandoned-matrix-the-dark-truth-about-user-security-and-sa...
83•Flere-Imsaho•2h ago•51 comments

When Compilers Surprise You

https://xania.org/202512/24-cunning-clang
90•brewmarche•3h ago•37 comments

Fabrice Bellard Releases MicroQuickJS

https://github.com/bellard/mquickjs/blob/main/README.md
1281•Aissen•23h ago•476 comments

Your Inbox Is a Bandit

https://parentheticallyspeaking.org/articles/bandit-inbox/
51•zdw•2d ago•39 comments

Some Epstein file redactions are being undone with hacks

https://www.theguardian.com/us-news/2025/dec/23/epstein-unredacted-files-social-media
776•vinni2•21h ago•602 comments

The Port I couldn't Ship

https://ammil.industries/the-port-i-couldnt-ship/
66•cjlm•5d ago•20 comments

X-ray: a Python library for finding bad redactions in PDF documents

https://github.com/freelawproject/x-ray
584•rendx•19h ago•101 comments

Super Mario Bros. and Yoshi Games (Yields) Reduced Burnout Risk

https://games.jmir.org/2025/1/e84219/
65•azalemeth•3h ago•56 comments

AMD entered the CPU market with reverse-engineered Intel 8080 clone 50 years ago

https://www.tomshardware.com/pc-components/cpus/amd-first-entered-the-cpu-market-with-reverse-eng...
70•ksec•2h ago•21 comments

The e-scooter isn't new – London was zooming around on Autopeds a century ago

https://www.ianvisits.co.uk/articles/the-e-scooter-isnt-new-london-was-zooming-around-on-autopeds...
75•zeristor•8h ago•50 comments

Making a game on a custom bytecode VM in 7 days and 3kB

https://laurent.le-brun.eu/blog/making-a-game-on-a-custom-bytecode-vm-in-7-days-and-3kb
25•laurentlb•5d ago•3 comments

Unifi Travel Router

https://blog.ui.com/article/travel-in-style-unifi-style-unifi-travel-router
384•flurdy•16h ago•337 comments

Map: Operator[] Should Be Nodiscard

https://quuxplusone.github.io/blog/2025/12/18/nodiscard-operator-bracket/
55•jandeboevrie•5d ago•37 comments

Nabokov's guide to foreigners learning Russian

https://twitter.com/haravayin_hogh/status/2003299405907247502
178•flaxxen•16h ago•303 comments

Permission Systems for Enterprise That Scale

https://eliocapella.com/blog/permission-systems-for-enterprise/
51•eliocs•7h ago•18 comments

Mt. Gox CEO Karpelès Reveals Details of 2014 Collapse and Japanese Detention

https://bitcoinmagazine.com/business/former-mt-gox-ceo-mark-karpeles-reveals-details-of-2014-coll...
23•giuliomagnifico•1h ago•6 comments

Scaling Go Testing with Contract and Scenario Mocks

https://funnelstory.ai/blog/engineering/scaling-go-testing-with-contract-and-scenario-mocks
27•preetamjinka•5d ago•14 comments

Show HN: LazyPromise = Observable – Signals

https://github.com/lazy-promise/lazy-promise
7•ivan7237d•5d ago•0 comments

New reactor produces clean energy and carbon nanotubes from natural gas

https://phys.org/news/2025-12-reactor-energy-carbon-nanotubes-natural.html
32•westurner•2h ago•26 comments

LVM Thin Provisioning (2016)

https://storageapis.wordpress.com/2016/06/24/lvm-thin-provisioning/
3•indigodaddy•2d ago•0 comments

Lua 5.5

https://lua.org/versions.html#5.5
367•km•2d ago•115 comments

Show HN: Turn raw HTML into production-ready images for free

https://html2png.dev
122•alvinunreal•15h ago•63 comments

Texas app store age verification law blocked by federal judge

https://www.macrumors.com/2025/12/23/texas-app-store-law-blocked/
281•danso•19h ago•205 comments

I'm returning my Framework 16

https://yorickpeterse.com/articles/im-returning-my-framework-16/
24•YorickPeterse•4h ago•1 comments

I rebuilt FlashAttention in Triton to understand the performance archaeology

https://aminediro.com/posts/flash_attn/
68•amindiro•3d ago•11 comments

Perfect Software – Software for an Audience of One

https://outofdesk.netlify.app/blog/perfect-software
179•ggauravr•4d ago•79 comments

HTTP Caching, a Refresher

https://danburzo.ro/http-caching-refresher/
150•danburzo•21h ago•25 comments

Proving Bounds for the Randomized MaxCut Approximation Algorithm in Lean4

https://abhamra.com/blog/randomized-maxcut/
54•todsacerdoti•4d ago•3 comments

Show HN: Tonbo – an embedded database for serverless and edge runtimes

https://github.com/tonbo-io/tonbo
48•ethegwo•6d ago•11 comments

Open source USB to GPIB converter (for Test and Measurement instruments)

https://github.com/xyphro/UsbGpib
66•v15w•16h ago•30 comments
Open in hackernews

Fixrleak: Fixing Java Resource Leaks with GenAI

https://www.uber.com/blog/fixrleak-fixing-java-resource-leaks-with-genai/
17•carimura•7mo ago

Comments

stevoski•7mo ago
> “Resource leaks, where resources like files, database connections, or streams aren’t properly released after use, are a persistent issue in Java applications”

This was true maybe back in 2005. Java has had try-with-resources for a loooong time. As I see it this has been the dominant idiom for ages, for handling resources that might leak.

okr•7mo ago
People tend to forget. Stream-API is a good candidate, that people like to not consider for leakage. If you don't own your stream, if you do not definitly know, that your stream comes from a collection, then ya better close it with a try-block.
bob778•7mo ago
How much effort was spent automating this to fix 112 instances across Uber’s code base? I assume code reviews would catch any new issues so this seems like overkill for a small one-off task?
hawk_•7mo ago
Spotbugs or checkstyle etc... would catch these. What does AI add here?
xyst•7mo ago
It gives marketing team at Uber to say "wE uSe AI hErE!!1". C-levels approve since anything AI gets a nice pump.

Engineering wise. This adds nothing. It’s an absolute waste of compute and energy to run this through LLMs

sigotirandolas•7mo ago
> This analysis ensures that FixrLeak skips functions where resources are passed as parameters, returned, or stored in fields, as these resources often outlive the function’s scope.

> FixrLeak delivers precise, reliable fixes while leaving more complex cases for advanced analysis at the caller level.

In other words, this will only fix trivial leaks, which are best seen as a language design issue and can be fixed by RAII, reference counting, etc.

It won't fix the more insidious leaks like `UNBOUNDED_QUEUE.add(item)` that are more likely to pass through code review in the first place.

xyst•7mo ago
Using AI when a static scanner like SonarQube easily picks up these types of resource leaks, especially in Java.

Peak waste.

What’s next?

"Get rid of your GitHub dependabot alerts and replace it with my shitty ChatGPT wrapper”

rvz•7mo ago
> Using AI when a static scanner like SonarQube easily picks up these types of resource leaks, especially in Java.

Exactly.

It's very disappointing to see that Uber engineers would rather trust an LLM to that claims to spot these issues when a battle-tested scanner such as SonarQube would have caught this in the first place.

The LLM hype-train is almost just as bad as the JavaScript hype train in the 2010s where some of the worst technologies are used on everything.

rvz•7mo ago
Why exactly do you need LLMs for this when efficient alternatives like SonarQube or checkstyle already do this without the expensive waste LLMs create?

This adds little to no technical advantage over existing solutions what so ever for this particular use case.

yahoozoo•7mo ago
stupid af
Traubenfuchs•7mo ago
So you tell me those 200-600k software engineers that can easily solve leetcode hard are so incompetent they missed using try-with-resources at such scale, they needed to introduce new AI tooling to fix it?

Hey Uber, I am from the EU, I usually can‘t even solve leetcode medium but I will write you scalable, spotless Java for a third of the salary.

Our industry and its economics are a joke.

hello_moto•7mo ago
So you write bug-free scalable code 100% in any jobs you ever worked for?

I guess we don’t need QA and Dev/Staging environment

rad_gruchalski•7mo ago
Can the QA team? How does the dev/staging environment help writing less buggy code?
rad_gruchalski•7mo ago
But can you leetcode heh.
TYMorningCoffee•7mo ago
A lot of commenters point out that there already are many established static checkers that do this. That is not what Uber attempts here.

Uber is not proposing a static checker. They even use sonar qube in their architecture. They propose using an LLM to resolve the leak detected by sonar qube.