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Re: [discuss] Support for reverse-execution
> Date: Sat, 21 May 2005 20:30:16 +1000
> From: Russell Shaw <rjshaw@netspace.net.au>
> Cc: gdb@sources.redhat.com
>
> It'd be better to store the state of every step in to a circular buffer
> of size 1000 (the user could change that size with a command).
When you say ``it'd be better'', what is the alternative that you
think is worse than your suggestion? What I wrote didn't say how many
previous states to remember, nor what data structure to use for that.
Also, I hope you don't mean ``every step'', but rather ``every stop''.
What I suggested didn't involve single-stepping the program, so GDB
can only collect the target state when the target stops, not after
each instruction.
> That way, there's only one backwards command to remember, and maybe a
> command to change the history buffer size.
That's essentially what I suggested: to have a single command to go
back to one of the places where we have enough information to restore
the target state.