Vue lecture

La nouvelle fonctionnalité de X/Twitter fait des ravages : l’étendue de l’influence étrangère révélée au grand jour

Fin novembre 2025, X a déployé une nouvelle fonction appelée « À propos de ce compte » qui permet de connaître la localisation principale d'un compte. Le constat est sans appel : un très grand nombre de comptes militants, spécialisés dans les publications politiques, opèrent de l'étranger.

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Kernel prepatch 6.18-rc7

✇LWN
Par :corbet
Linus has released 6.18-rc7, probably the last -rc before the 6.18 release.

So the rc6 kernel wasn't great: we had a last-minute core VM regression that caused people problems.

That's not a great thing late in the release cycle like that, but it was a fairly trivial fix, and the cause wasn't some horrid bug, just a latent gotcha that happened to then bite a late VM fix. So while not great, it also doesn't make me worry about the state of 6.18. We're still on track for a final release next weekend unless some big new problem rears its ugly head.

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Racket 9.0 released

✇LWN
Par :jake
The Racket programming language project has released Racket version 9.0. Racket is a descendant of Scheme, so it is part of the Lisp family of languages. The headline feature in the release is parallel threads, which adds to the concurrency tools in the language: "While Racket has had green threads for some time, and supports parallelism via futures and places, we feel parallel threads is a major addition." Other new features include the black-box wrapper to prevent the compiler from optimizing calculations away, the decompile-linklet function to map linklets back to an s-expression, the addition of Weibull distributions to the math library, and more.
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Improving GCC Buffer Overflow Detection for C Flexible Array Members (Oracle)

✇LWN
Par :corbet
The Oracle blog has a lengthy article on enhancements to GCC to help detect overflows of flexible array members (FAMs) in C programs.

We describe here two new GNU extensions which specify size information for FAMs. These are a new attribute, "counted_by" and a new builtin function, "__builtin_counted_by_ref". Both extensions can be used in GNU C applications to specify size information for FAMs, improving the buffer overflow detection for FAMs in general.

This work has been covered on LWN as well.

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The 2025 Linux Foundation Technical Advisory Board election

✇LWN
Par :corbet
The call for candidates for the 2025 election for the Linux Foundation Technical Advisory Board has been posted.

The TAB exists to provide advice from the kernel community to the Linux Foundation and holds a seat on the LF's board of directors; it also serves to facilitate interactions both within the community and with outside entities. Over the last year, the TAB has overseen the organization of the Linux Plumbers Conference, advised on the setup of the kernel CVE numbering authority, worked behind the scenes to help resolve a number of contentious community discussions, worked with the Linux Foundation on community conference planning, and more.

Nominations close on December 13.

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« Comme une scène de crime » : comment l’ADN environnemental révèle les secrets cachés de nos montagnes

Dans les Alpes françaises, quelques poignées de terre suffisent aux scientifiques pour cartographier la vie grâce à l’ADN environnemental. Une technologie centrale dans le cadre de Dynabiod, un programme de recherche de grande ampleur confié au CNRS pour surveiller et prédire l’état de la biodiversité, et plus particulièrement des plantes et des invertébrés, dont le démarrage est prévu en mars 2026.

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