0xDEADBEEF
DEADBEEF debug sentinel
Classic hexspeak marker (decimal 3735928559) used to mark freed or uninitialized memory so wild pointers are obvious in a debugger. Used by IBM RS/6000, classic Mac OS and countless allocators since.
Similar magic numbers
| value | name | category |
|---|---|---|
| 0xDEADC0DE | OpenWrt firmware marker | sentinel |
| FE EF | Symantex Ghost image file | file-signature |