andreyv

6 ms·

1.
by andreyv 10mo ago
Follow this forum: https://forum.sailfishos.org/c/announcements/17 .
2.
by andreyv 1y ago
Autoconf can use cache files [1], which can greatly speed up repeated configures. With cache, a test is run at most once. [1] https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/a...
3.
by andreyv 1y ago
Here is a non-zero null pointer: https://gcc.godbolt.org/z/Po5r5Pa36
4.
by andreyv 2y ago
It creates a compound literal [1] of type array of int, and initializes the specified array positions using designated initializers [2] with the results of calls to puts(). Using designated initializers without the = symbol is an obsolete e
5.
CVE-2024-6409: OpenSSH: Possible remote code execution in privsep child(openwall.com)
141 points by andreyv 2y ago|56 comments
6.
by andreyv 2y ago
Even the original version 1507 is still supported on the LTSC channel. Support for UTF-8 manifest was added only in version 1903.
7.
by andreyv 2y ago
Old does not mean bad. Even a decade later Wayland struggles to provide basic features that were built in the X protocol.
8.
by andreyv 3y ago
The number of registers available to the program is fixed in the instruction set. The program cannot address more registers without recompiling it to an extended instruction set.
9.
by andreyv 3y ago
First person shooters. Vertical synchronization causes a noticeable output delay. For example, with a 60 Hz display and vsync, game actions might be shown up to 16 ms later than without vsync, which is ages in FPS.
10.
by andreyv 3y ago
The Soviet Union briefly tried 5 and 6 day weeks in the 1930s: https://en.wikipedia.org/wiki/Soviet_calendar
11.
by andreyv 3y ago
You can use systemd-cron [1] to run traditional cron jobs with systemd. No need for a separate daemon anymore. [1] https://github.com/systemd-cron/systemd-cron
12.
by andreyv 3y ago
Instead of "/usr/bin/time" you can also write "command time".
13.
by andreyv 3y ago
1% is still a lot for power saving. If the system is idle, it should be at 0%. If it is anything above, then it shows poor design.
14.
by andreyv 4y ago
See: https://en.wikipedia.org/wiki/Lagrange_polynomial
15.
by andreyv 5y ago
Right — ferror() does not set errno, and so perror() is not appropriate here. fprintf(stderr, ...) would be better.
16.
by andreyv 5y ago
In C, and many other languages, the file stream error state is saved after each operation, so you can skip error checking on every output line and only do if (fflush(stdout) != 0 || ferror(stdout) != 0) { perror("stdout"
17.
by andreyv 5y ago
Perhaps this: https://docs.microsoft.com/en-us/windows-hardware/design/dev... > On occasion, the system stays in the active mode (with the screen off) for a longer interval of time. These longer active int
18.
by andreyv 5y ago
> So there is no way to abort a bash script if something like <(sort nonexistent) fails. The process ID of the last executed background command in Bash is available as $!. cat <(sort nonexistent) wait $! || echo fail gives
19.
C++ iostreams: Unexpected but legal multithreaded behaviour(berthub.eu)
2 points by andreyv 5y ago|0 comments
20.
by andreyv 5y ago
Dell also removed trackpoint and all touchpad buttons, and made up/down arrow keys half height on the new Latitude laptops. These are not the changes one would expect to see in a professional-grade laptop. On the other hand, the Lenovo
21.
by andreyv 5y ago
Autoconf can use a cache file to speed up tests: https://www.gnu.org/software/autoconf/manual/autoconf-2.60/h...
22.
by andreyv 6y ago
In fast-paced games it is essential to disable vertical synchronization as well, trading possible tearing for less input lag. Does Wayland support this?
23.
by andreyv 7y ago
C now has a memset_s() function to do this.
24.
by andreyv 7y ago
Windows unredirects full-screen games, bypassing the compositing delay. This is also what sensible compositing X11 window managers do on Linux.
25.
by andreyv 7y ago
Forced composition and vsync is a mistake for gaming. The added output latency is unacceptable, especially for first-person shooters. A little tearing is nothing compared to the vsync lag. If Wayland wants to replace X.org, then it should s
26.
by andreyv 7y ago
Indeed, "volatile sig_atomic_t" is the recommended official C way to change a flag from a signal handler.
27.
by andreyv 7y ago
There is no tearing with proper drivers and window managers. This was a problem in the past, but now is largely overstated.
28.
by andreyv 8y ago
One counterargument is that for each ABI you need a different set of libraries loaded in memory. So, if some programs in the system use the 64-bit ABI and some use x32, then memory usage may substantially increase. And, of course, this also
29.
by andreyv 8y ago
What the actual hell.
30.
by andreyv 8y ago
Flatpak, Snap, container images are the new iteration of static linking. Just like with static binaries, they make deployment easier for the developer, but introduce problems with size, duplication and library updates. Flatpak added runtime

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