Followup to: <[EMAIL PROTECTED]>
By author: Linus Torvalds <[EMAIL PROTECTED]>
In newsgroup: linux.dev.kernel
>
> Remember: debug traps work even without debuggers. You can use a "int 3"
> in your program if you want to have self-debug somewhere. Not many people
> do it, of course, but there's nothing fundamentally wrong in just catching
> SIGTRAP yourself, and doing something special on debug events.
>
This is sometimes used to patch code at runtime, since it's a
single-byte instruction.
-hpa
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