bugaevc

bugaevc, 18 days ago to random

Remember to hydrate, fellow humans 💧

bugaevc, 1 month ago to random

Let's look into C++ 20 coroutines 🧵

I assume you're already familiar with general ideas of coroutines, async/await, and CPS / state machine transformation from other languages.

bugaevc, 1 month ago to random

New display name, let's see how long this one lasts :D

bugaevc, 2 months ago to random

Mutter is the Metacity window manager, rewritten in Dart using Google's Flutter toolkit, primarily targeting tablets and mobile phones.

bugaevc, 2 months ago to random

GNU #Mach on AArch64 now boots up and runs a simple userspace hello world on ✨ real hardware ✨ , booted from U-Boot! 🎉

Kudos to Manolo De Medici for testing & helping track down issues!

If you want to help with Mach / #Hurd on AArch64 and know anything about writing drivers and/or have an AArch64 board, please get in touch :)

bugaevc, 2 months ago to random

Let's look into virtualization on ARM

🧵

bugaevc, 2 months ago to rust

Looks like the "break rust" easter egg that I added last year is being removed from GCC #Rust over being "bloat" and "insulting the GCC users"

Oh well

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114629

bugaevc, 2 months ago to random

Updated to F40 for a laugh. Now I'm unable to log in, since SDDM crashes on startup.

Qt upstream sounds pretty clueless about how distros work: "GCC 14 isn't officially supported by Qt yet. Are you able to build with GCC 11?"

The root cause is apparently a GCC regression https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114576

this is fine.jpg

bugaevc, 2 months ago to random

I need 'git commit --llm' that would ask me a bunch of questions and then write a commit message for me based on my explanations.

Like, I fixed this complicated issue, and even though the patch itself is quite small, it takes 6 paragraphs of prose to explain what the issue even was and how it could happen.

bugaevc, 2 months ago to random

I implemented support for copying send-once port rights for GNU #Mach (MACH_MSG_TYPE_COPY_SEND_ONCE) 😉
The patches have already been applied by Samuel.

#hurd

https://mail.gnu.org/archive/html/bug-hurd/2024-04/msg00001.html

bugaevc, 2 months ago to random

XKCD 2347, but the person in Nebraska who's been thanklessly maintaining the project since 2003 has developed long-term mental health issues and is only glad to add a co-maintainer when another interested person shows up.

bugaevc, 2 months ago to random

Is Linux secure?

Let me rephrase, is a huge pile of C code, running in privileged mode in a shared address space, highly concurrent, using its own homegrown memory model based on volatile instead of the one the language spec defines and the compilers implement, dealing with untrusted data, implementing many complex protocols, data formats, & functionality, managing a bunch of "objects" with complex ownership and lifetime semantics, embedding its own JIT — secure?

bugaevc, 2 months ago to random

https://inbox.sourceware.org/libc-alpha/20240323173301.151066-1-bugaevc@gmail.com/

aarch64-gnu port of glibc v2 & an update on the GNU/Hurd on AArch64 progress 🚀

:gnu: #hurd

bugaevc, 2 months ago to random

GNOME Software: a critical system update is available! Stop what you're doing and reboot to install it at once!
Me: what, another buffer overflow in glibc?
GNOME Software: it's firefox-langpacks

bugaevc, 2 months ago to random

So basically memory unsafety vulnerabilities, at scale, are a given, as long as a process runs non-trivial C code; they're always going to happen. It makes no sense to blame particular instances of vulnerabilities being accidentally introduced, that's just how things are. And it's on hardware designers, and us, systems designers, to introduce mitigations to try and protect against the vulnerabilities in ways other than just not writing them.

Or, we could RiiR 🙂

bugaevc, 3 months ago to random

Alan Wake (1, not 2) first impressions:

It starts by referencing Stephen King! And in general seems to be quite King-ian. It references The Shining too (though the terrible 1980 movie, not the book).

The graphics are meh, but then again, it's a 2010/2012 game.

I am getting the Control vibes from the eerie sounds. Dr Hartman is also a familiar name.

It is structured like a TV series, with distinct episodes, titles at the end of an episode, and "previously on Alan Wake" recap at the beginning.

bugaevc, 3 months ago to random

In this day and age, does it still make sense to lazily load and restore "floating point" (read: SIMD) state on context switch?

With the baseline ISAs guaranteeing SIMD support and compilers making use of it unconditionally, it's no longer an occasional app that "does math", it's everywhere.

bugaevc, 4 months ago to random

Note to self, to insert ^L aka form feed aka \f:

in Emacs, C-q C-l
in Nano, M-Shift-V ^L

(both of these are enabling raw/verbatim input mode and then entering Control-L)

bugaevc, 4 months ago to random

That's not quite what I was looking for...

bugaevc, 4 months ago to random

"The X Window System was basically the wrong bet on how GUIs and computer hardware would evolve. <...> The history of Linux GUI is a series of heroic workarounds to hide the misaligned X underpinnings."

(From the orange site thread on the recent GTK blog post)

bugaevc, 4 months ago to random

I cannot overstate just how important the GCC Rust project is for, like, the future of computing, and everything.

And yet, under any post on LWN / HN / Reddit, 90% of discussion is people demanding justification for the project's existence. Because how dare they develop a compiler that someone doesn't see a use case for?!

bugaevc, 4 months ago to random

Misreading subtitles as subtleties

bugaevc, 5 months ago to random

Why do Linux, GRUB (and others?) use ET_REL (object files) and not ET_DYN (shared objects) for their loadable modules?

Is it just that they want non-PIC, since linking the relocatable object into its place once is cheaper than paying the runtime overhead of PIC?

bugaevc, 5 months ago to random

/* Come on GCC, just give me the code. */

asm ("/");
void
foo (void)
{
asm volatile ("/");
...

bugaevc, 5 months ago to random

git: 'git' is not a git command