140: DTF:HN for May 20, 2026

Your Daily Tech Feed covering the top 10 stories on Hacker News for May 20, 2026. Featuring: Everything in C is undefined behavior, Learnings from 100K lines of Rust with AI (2025), Gemini 3.5 Flash, FiveThirtyEight articles on the Internet Archive, I’ve built a virtual museum with nearly every operating system you can think of, and more.

Stories covered:

1. Everything in C is undefined behavior
   (Article | HN Discussion | 🎧 0:25)
2. Learnings from 100K lines of Rust with AI (2025)
   (Article | HN Discussion | 🎧 4:36)
3. Gemini 3.5 Flash
   (Article | HN Discussion | 🎧 8:10)
4. FiveThirtyEight articles on the Internet Archive
   (Article | HN Discussion | 🎧 11:32)
5. I’ve built a virtual museum with nearly every operating system you can think of
   (Article | HN Discussion | 🎧 14:43)
6. Japan is gripped by mass allergies. A 1950s project is to blame
   (Article | HN Discussion | 🎧 18:05)
7. Infomaniak transitions to a foundation model to protect user data privacy
   (Article | HN Discussion | 🎧 21:31)
8. Google changes its search box
   (Article | HN Discussion | 🎧 24:56)
9. Show HN: Forge – Guardrails take an 8B model from 53% to 99% on agentic tasks
   (Article | HN Discussion | 🎧 28:21)
10. Remove-AI-Watermarks – CLI and library for removing AI watermarks from images
    (Article | HN Discussion | 🎧 31:17)