I found an obscure dirty joke on p. 46 of the *Mac OS X Assembler Guide.* [1] .f...

Zenst · on April 12, 2020

AIX used to (probably still does) use DEADBEEF as a hex value to clear memory out.

mjlee · on April 12, 2020

https://en.wikipedia.org/wiki/Hexspeak

There are some fun entries there for hex values used as magic numbers.

Apple have some great ones used in their crash report exception types - 0x2bad45ec (too bad for sec) and 0xc00010ff in the event of being killed for overheating.

saagarjha · on April 13, 2020

A list of such codes: https://developer.apple.com/library/archive/technotes/tn2151...

saagarjha · on April 13, 2020

I’m surprised it’s not 0xfeedface, the magic for 32-bit Mach-O binaries.