-var-update using formatted value

[Nick Roberts]

 > >  > I cannot imagine any usecase where the frontend would:
 > >  > 
 > >  >  1. Change format
 > >  >  2. Step program
 > >  >  3. Issue -var-update
 > > 
 > > I'm not sure what point you're making here.  Debugging GDB, has variables
 > > which contain addresses which are not pointers (so the natural format is
 > > decimal), e.g., stack_addr, code_addr components of frames.  It makes
 > > sense here to:
 > > 
 > > 1.  Change format to hexadecimal
 > > 2.  Step GDB
 > > 3.  Issue -var-update to see if these values have changed.
 > 
 > What UI-level command does this? And why, after you change format, 
 > you don't read/display the value in new format?

Creating a watch expression (in the speedbar, in the case of Emacs) for a frame
related structure would do this.  Yes, currently you would need to do
-var-update after 1..

Anyway, I withdraw my objection to your patch, if the patch (or similar) in the
thread I mentioned (http://sourceware.org/ml/gdb-patches/2006-05/msg00008.html)
is also approved.  So there appears to be some consensus here.

-- 
Nick                                           http://www.inet.net.nz/~nickrob