New

The latest blog posts to take off on Hacker News. 992 posts.

Society, Policy & Culture
2025
424

D4D4

A co-worker of mine (the incomparable Yohei Manabe) was looking at some disassembled ARM code the other day, and discovered something weird. Lots of d4d4 instructions, scattered about. LLVM’s objdump says this is a relative branch to -0x58 . The weird part is that they were always unreachable.

442

The Missing Protocol: Let Me Know

I want a new protocol, tentatively called “Let Me Know” (LMK). The purpose is to provide someone an anonymous way to get notified when a singular, specific event occurs. Here’s a basic use case: Some random blog author has published Parts 1 and 2 of a series. You enjoyed it, and you want to know…