Hacker News: andreyv

New comment by andreyv in "Jolla Phone Pre-Order"

andreyv — Fri, 05 Dec 2025 18:18:55 +0000

Follow this forum: https://forum.sailfishos.org/c/announcements/17.

New comment by andreyv in "Parallel ./configure"

andreyv — Sat, 26 Apr 2025 05:13:42 +0000

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...

New comment by andreyv in "History of Null Pointer Dereferences on macOS"

andreyv — Sat, 22 Mar 2025 16:30:58 +0000

Here is a non-zero null pointer: https://gcc.godbolt.org/z/Po5r5Pa36

New comment by andreyv in "Getting silly with C, part (void*)2"

andreyv — Fri, 10 Jan 2025 18:57:59 +0000

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 extension.

[1] https://gcc.gnu.org/onlinedocs/gcc/Compound-Literals.html [2] https://gcc.gnu.org/onlinedocs/gcc/Designated-Inits.html

CVE-2024-6409: OpenSSH: Possible remote code execution in privsep child

andreyv — Tue, 09 Jul 2024 14:51:25 +0000

Article URL: https://www.openwall.com/lists/oss-security/2024/07/08/2

Comments URL: https://news.ycombinator.com/item?id=40916820

Points: 141

# Comments: 56

New comment by andreyv in "Glibc Buffer Overflow in Iconv"

andreyv — Sun, 21 Apr 2024 10:48:41 +0000

Even the original version 1507 is still supported on the LTSC channel. Support for UTF-8 manifest was added only in version 1903.

New comment by andreyv in "Kate editor on all platforms"

andreyv — Mon, 15 Apr 2024 04:36:44 +0000

Old does not mean bad. Even a decade later Wayland struggles to provide basic features that were built in the X protocol.

New comment by andreyv in "Ubuntu 24.04 LTS will enable frame pointers by default"

andreyv — Wed, 13 Dec 2023 20:23:06 +0000

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.

New comment by andreyv in "GTK: Introducing Graphics Offload"

andreyv — Sat, 18 Nov 2023 16:47:25 +0000

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.

New comment by andreyv in "The world nearly adopted a calendar with 13 months of 28 days"

andreyv — Sun, 05 Nov 2023 08:10:32 +0000

The Soviet Union briefly tried 5 and 6 day weeks in the 1930s: https://en.wikipedia.org/wiki/Soviet_calendar

New comment by andreyv in "Fcron Is the Best Cron"

andreyv — Sun, 15 Oct 2023 13:35:06 +0000

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

New comment by andreyv in "Exploring Linux command-line space time"

andreyv — Wed, 27 Sep 2023 06:36:51 +0000

Instead of "/usr/bin/time" you can also write "command time".

New comment by andreyv in "Control Center on macOS is always re-rendering its SwiftUI causing 1% CPU load"

andreyv — Tue, 26 Sep 2023 13:04:25 +0000

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.

New comment by andreyv in "Visual Sum of Cubes"

andreyv — Sat, 20 Aug 2022 06:45:32 +0000

See: https://en.wikipedia.org/wiki/Lagrange_polynomial

New comment by andreyv in "Bugs in Hello World"

andreyv — Wed, 09 Mar 2022 10:23:37 +0000

Right — ferror() does not set errno, and so perror() is not appropriate here. fprintf(stderr, ...) would be better.

New comment by andreyv in "Bugs in Hello World"

andreyv — Wed, 09 Mar 2022 07:44:21 +0000

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");
    return EXIT_FAILURE;
  }

at the end of the program. The same should be done for stderr as well.

In GNU programs you can use atexit(close_stdout) to do this automatically.

New comment by andreyv in "Dell deletes Latitude CPU Throttling issue after link is posted here"

andreyv — Mon, 14 Feb 2022 18:06:28 +0000

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 intervals occur for a variety of reasons, for example, processing incoming email or downloading critical Windows updates.

New comment by andreyv in "Why “process substitution” is a late feature in Unix shells"

andreyv — Sat, 08 Jan 2022 07:08:31 +0000

> 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

  sort: cannot read: nonexistent: No such file or directory
  fail

C++ iostreams: Unexpected but legal multithreaded behaviour

andreyv — Thu, 25 Nov 2021 19:00:04 +0000

Article URL: https://berthub.eu/articles/posts/iostreams-unexpected/

Comments URL: https://news.ycombinator.com/item?id=29343949

Points: 2

# Comments: 0

New comment by andreyv in "Dell removed Fn+Left/Right for Home/End from all its products"

andreyv — Wed, 23 Jun 2021 12:07:20 +0000

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 line looks good in this regard.