With Tom Lehrer's passing, I suppose this is a moment to share the story of the prank he played on the National Security Agency, and how it went undiscovered for nearly 60 years.

Like the NTSB, I often wish the CSB had more teeth. 😑 They do a great job with their public communication it would be a massive loss to have them (further) defunded.

This UB was really surprising to me when I found out about it.

Thank you for all the hard work you do for those of us who are still stuck using this language!

It has big disk energy.

Cursed knowledge learned today:

thumbv8 targets (like the RP2350!) start with their memory marked as "non-sharable" at boot, meaning that atomics between the processors *don't actually work*, until you either set the regions sharable in the MPU, or set a global "everythings sharable" flag.

Rules for Interrupt Safety:

1. Always Keep Interrupts Vectored in a Safe direction
2. Treat All Interrupts as Though They are Enabled
3. Keep Your Event Sources Disabled Until You are Ready to Handle Them
4. Always Be Sure of Your Vector Target and What’s Beyond It

The ARM/Keil and IAR toolchains both have a couple compression schemes they can use for .data on microcontrollers. It's been a while since I've used them, but I think they'll even exhaustively search the different compressors to find which is optimal on a per-section basis.

Happy 21st birthday to Trogdor!!

(This is sadly not a joke. That sbemail debuted 1/13/03. We are old).

Ok how much does this handle break