Re: Adding -file-list-exec-source-file command to GDB/MI

[Andrew Cagney <ac131313@redhat.com>]

> Ah, now I see.  You didn't mean "That doesn't work", you meant "That
> doesn't work generally".

"Generally" isn't the issue.  GDB needs changes that work.  As you note 
with #2

> #1 doesn't apply to us at Apple.  #2 is a real problem - although
> the failure mode is that the UI re-fetches the stack, so it's not
> too traumatic.  And because it only needs to re-fetch the 0th frame,
> it is fast.  And you'll have the same problem with varobj's being
> deleted when your FP moves IIRC.  

even for Apple, this doesn't work.

Per my original comment, and many previous posts, MI (varobj) needs to 
switch to frame IDs.

> As for #3, I don't understand why the PC won't remain constant for
> a frame other than the 0th, but you're familiar with far more
> architectures than me.  Obviously the currently executing frame
> will have a changing PC, but the frames higher up on the stack
> should stay constant unless they've executed some more.

The function address is needed when trying to correctly re-identify a 
frame that has executed.

Andrew