Notices by Alexander Monakov (amonakov@mastodon.gamedev.place)

@icedquinn @wolf480pl I don't think it's academic, checking decoded data is how you catch unintended bugs; floating-point decoding can be reproducible if you know what you're doing

@wolf480pl @icedquinn I can confirm that, both the ffmpeg decoder and reference library use floats; the reference library can be configured to avoid floating-point arithmetic, but that's not the default.

@wolf480pl @icedquinn but even without floating-point, you can get different decodes if your other version of ffmpeg doesn't know about the clever backward-compatible upgrade:

@wolf480pl @icedquinn hm, but on second thought, that is specifically for streaming over networks, and wouldn't be used in conventional encoding?

@wolf480pl @icedquinn possibly? from the sound of it, the encoder would have to opt-in for that, and I barely know what I'm talking about here.

@wolf480pl @icedquinn again, on second^2 thought, in case of Youtube that wouldn't make sense, because they are streaming over TLS, which is not lossy. It is for use cases where the protocols are specifically built with dropouts in mind, like videoconferencing.

I am once again baffled that apparently nobody is caching random blobs like source tarballs, because only 'busybox wget' can issue 'GET https://...' to a proxy (wget and curl issue CONNECT for https resources), and Squid doesn't interoperate with 'busybox wget', as it sends TCP FIN early — I had to use nginx with 'proxy_ignore_client_abort on'.

But now we finally have a setup where we can have a caching http(s) proxy in front of containers that rebuild a distro.

In 'less', you can interactively add command-line arguments without leaving the pager by pressing '-': you can press '-S' to flip wrapping/chopping of long lines, and '-j11' to spawn 10 wor^W^W^W see extra ten lines of context above the match when searching!

@regehr how do you rate this verbatim quote from the paper:

GWP-ASan is neither GWP nor ASan.

@lanodan @wolf480pl good to know, thanks!

My kingdom for a distro with smooth cross-installation (preparing a rootfs for a foreign architecture without qemu).

@shafik and yet sometimes a quad-long is okay with g++ if you twist its arm in exactly the right way:

At work, I'm helping recover a server that fails to boot, and as I learn more about common UEFI implementations, I keep wondering "what were they thinking??"

- Modifiable state (NVRAM) on the same flash chip as essential boot software;

- No logs whatsoever.

@wolf480pl The flash chip I'm talking about is less that $1 in a $10000 server. And the logs that would at least announce the currently executing UEFI module/driver would cost ~nothing.