human borrow checker (but logic bugs are best bugs).
works at Google Project Zero.
The density of logic bugs (compared to memory corruption bugs) goes down as the privilege differential between attacker context and target context goes up.
| homepage | https://thejh.net |
PNG is back!
https://www.programmax.net/articles/png-is-back/ (by Chris Blume)
A new PNG spec was just released! […]
[…] After 20 years of stagnation, PNG is back with renewed vigor!
What's new?
* Proper HDR support (future‐proof, too!)
* Finally recognizes APNGs (animations!)
* Officially supports Exif data
* General tidying up—fixing errata, clarifications, etc.
In 2021, hundreds of citizen scientists walked a distance of 600 km, counting up and classifying all of the outdoor lights they could see while they did it. The results of their observations have just been published in the journal Nature Cities: https://www.nature.com/articles/s44284-025-00239-5
Find out why they did it, and what they found out in this thread 👇
(1/)
#CitizenScience #LightPollution #OpenAccess #NighttimeLights #RemoteSensing #Nachtlichter
Also the perfectionist's nightmare that is the selection of GPRs in AMD64 calling convention on Linux. The six integer arguments go in rdi-rsi-rdx-rcx-r8-r9.
memcpy's arguments are therefore dst:rdi, src:rsi, count:rdx.
Meanwhile, REP MOVSB takes rdi as destination, rsi as the source, and... rcx as the count.
Thorsten Leemhuis (acct. 2/4)
Matthew Garrett
Christopher Kyba 🇨🇦🇪🇺
Fabian Giesen
abadidea
Tom Warren
Nicole ‘dyfa’ Britz
Alexander Monakov