Edit-and-continue

[Chris Lattner]

On Jul 19, 2010, at 1:57 PM, Tom Tromey wrote:

> Dave>   But yes, OP, it's a long-term project.
> 
> Apple implemented fix-and-continue in their toolchain.  They spoke about
> it a little bit on the gdb list, it is in the archives.  My take-away
> was that the feature is a lot of work for not much benefit, but YMMV,
> and of course we'd be happy to review any gdb patches in this direction
> :-)

The use case for fix-and-continue is for long lived apps.  This has little to do with actual build times, it is useful when restarting the app and getting it back into the state to repro the problem takes a long time.

It is a useful feature and Apple did implement it in their toolchain, but it's worth noting that they've ripped it out since then.  Their specific implementation was too fragile to work consistently.

-Chris