@vitaut @oleksandr IIUC that's the second case, so it can be UB. I was looking at a C11 draft, seems to the same in the C23 draft. As @shafik points out, it's explicitly defined to be 0 by the C++23 draft.

@deviantollam I just got my first Mac two months ago (as my work computer). IIUC this is how they work, there's some workarounds that sort of try to deal with the issue but they don't appear to work that well.

The software on these things is just terrible.

@oleksandr @vitaut IIUC it's UB (depending on how the implemented handles some related constructs)

If you're talking about `NULL - NULL` The C standard allows NULL to be either an integer (in which case subtraction is well defined) or a void pointer (in which case arithmetic is UB).

If you're talking about something like this code snippint, then you hit the "a pointer to an object that is not an element of an array behaves the same as a pointer to the first element of an array of length one with the type of the object as its element type". It's just "an array", so if they're the same array then it's defined. If they're different then it's UB (as pointer subtraction is only defined for two pointers to the same array).

Meet our awesome mascot in the colors of the 2025 edition!
Bringing that unmistakable French touch to the conference.:)

Feel free to download and use them – and keep an eye out, you might just spot them on some slides this September!

https://kernel-recipes.org/en/2025/meet-our-mascot/

Remember when RFK Jr said he wanted to make lists of autistic people?

Disabled advocates warned that was just the beginning. That the violation of medical privacy would be used for nefarious purposes.

Today the regime announced it’s giving all personally identifiable information of Medicaid enrolees to ICE.

That’s right, ICE bullies will now have access to almost 80 million people’s personal info. This is an atrocious violation of privacy that will no doubt be used to target other groups as well.

It won’t stop with immigrants. It won’t stop with autistic people.

Fascists never stop and we must all fight back.

#uspol #fascism #immigration #medicaid #ableism #disability

So that's one of those wacky "two A plug" USB cables?

You know, I remember times where I would concede proprietary software was *better* than #floss (due to features, support or however you want to define it).

Thanks to all the AI crap, micro-optimizations, tracking and privacy/security violations and useless changes I actually think most #floss apps are much better than their proprietary alternatives now. I don't have to keep clicking "maybe later" over and over. That's worth a lot to me OK?

That talk is incredible. If you're into hardware in general, you should watch it.

RE//verse 2025: Full-stack Reverse Engineering of the Original Microsoft...
https://youtube.com/watch?v=hGlIkgmhZvc

🖥 This is big: Android's Linux Terminal is available on the Galaxy Z Flip 7!

You can run full Linux apps in a VM. And with DeX, on an external display!

It's the first non-Pixel device to support it. Curiously, the Z Fold 7 doesn't have it. With the Linux Terminal + Samsung DeX...the Z Flip 7 might even be a better portable PC than the Z Fold 7? At least when it's docked!

Details👇

🔗 https://www.androidauthority.com/galaxy-z-flip-7-linux-terminal-3578675/

@karotte's field guide to embedded CPU cores:

- does it have a USB connection? 8051
- does it handle USB power delivery? Cortex-M0
- does it process IP packets? MIPS
- is it in some sort of video ASIC? 80186

Yeah, seriously, what's up with the 80186? So far, I've encountered them in
- DP to HDMI converters (MCDP2900A)
- DVD Player SoCs (ZR36966)
- Monitor SoCs (STDP9310)

https://www.cpushack.com/2013/01/12/the-intel-80186-gets-turbocharged-vautomation-turbo186/ makes mention of two other video ASICs using an 80186 CPU

I dislike that Oracle decided to name their cloud Oracle Cloud Infrastructure (OCI), despite the existence and popularity of Open Container Initiative (OCI) projects. Grumble grumble.

We're looking for a FOSS enthusiast who would like to represent NGI Zero in Poland. The mission is two-fold:
Engage local talent in the NGI initiative and share information about funding opportunities.
And bring NGI funded technologies to the attention of the local community.

If you are a resident of Poland and interested in engaging the free and open source community, check out the job opening for regional representative.
https://nlnet.nl/foundation/jobs/regionalrepresentative-PL.html

#FOSS #NGI #NGIZero #Poland #getfedihired

Job opportunity in the Netherlands relating to #OpenScience and #SoftwareEngineering: Come work for @DANS_knaw_nwo ⬇️

https://www.academictransfer.com/en/jobs/353381/software-engineertechnical-project-manager-dans/

Please boost for reach! ♻️

Application deadline 10th August 2025

#job #jobopportunity #work

My week: https://lists.haxx.se/pipermail/daniel/2025-July/000118.html

graphs, memory limits, security, rc3, CRA, old TLS, release, QNX, CI=true, curl_multi_getinfo,

Time to deprecate TLS 1.0 and 1.1 in #curl ?

https://curl.se/mail/lib-2025-07/0007.html

McDonald's uses an AI chatbot called "Olivia" for hiring. A pair of hackers found they could access every conversation job applicants had with it—including all the personal info they shared—by exploiting security vulnerabilities as basic as using the password "123456".

https://www.wired.com/story/mcdonalds-ai-hiring-chat-bot-paradoxai/

A few spots left for the conference — grab yours before they're gone!

The program is now finalized, take a look at it!. Big thumbs up to our godfather, @paulmckrcu

Drop us a message if you are a student for haf price on seats.

https://kernel-recipes.org/en/2025/schedule/

There’s a fascinating phone scam wave going on that I’ve seen it so far with Apple, Paramount+, and now PayPal.

You get an 100% legit looking mail even with valid BIMI headers and everything, telling you about some expensive thing or subscription with a number to call to dispute it.

The main giveaway is that the recipient is always an address in zantigoo.com and not you. 1/2

Edward Teller is mainly famous as the "father of the hydrogen bomb". But he wasn't dumb. He was invited to speak in 1959 at a big party in New York for the 100th birthday of the oil industry - a party put on by the American Petroleum Institute. Over 300 government officials, economists, historians, scientists, and industry executives were there.

And this is what he said:

‘”Whenever you burn conventional fuel, you create carbon dioxide.... The carbon dioxide is invisible, it is transparent, you can’t smell it, it is not dangerous to health, so why should one worry about it?"

“Carbon dioxide has a strange property. It transmits visible light but it absorbs the infrared radiation which is emitted from the earth. Its presence in the atmosphere causes a greenhouse effect …. a temperature rise …. sufficient to melt the icecaps and submerge New York. All the coastal cities would be covered, and since a considerable percentage of the human race lives in coastal regions, I think that this chemical contamination is more serious than most people tend to believe.”

https://www.theguardian.com/environment/climate-consensus-97-per-cent/2018/jan/01/on-its-hundredth-birthday-in-1959-edward-teller-warned-the-oil-industry-about-global-warming

Apropos nothing at all: Hey! I moved from San Francisco to Amsterdam two years ago, and I've never been happier. A friend wrote this guide for Americans:

https://v.st/daft