I see.  Might be worth filing an enhancement request to expose Clone so you can 
do this in a Python synthetic child provider.  But there's no reason that lack 
should block this change.

Jim

> On Mar 30, 2017, at 12:51 PM, Tamas Berghammer <tbergham...@google.com> wrote:
> 
> It is possible to vend one of the actual backing object as a synthetic child 
> using the SB API. What is not possible from the SB API at the moment (we 
> might want to fix it) is to vend one of the actual backing object with a 
> different name then the underlying object itself. You can still say that 
> object X has a child named "foobar" (so X.foobar will work) but the name of 
> the actual child will be something like "_M_baz" when displayed.
> 
> On Wed, Mar 29, 2017 at 10:16 AM Jim Ingham <jing...@apple.com> wrote:
> 
> > On Mar 29, 2017, at 2:06 AM, Tamas Berghammer via Phabricator 
> > <revi...@reviews.llvm.org> wrote:
> >
> > tberghammer added a comment.
> >
> > SBValue::SetName is not part of the SB API (what is the right decision IMO 
> > as an SBValue should be mostly immutable) so this issue doesn't effect it. 
> > I looked through the code in examples/synthetic/gnu_libstdcpp.py and it is 
> > always using one of the SBValue::Create* method to produce new SBValue what 
> > will create a new value object one way or the other. Considering that 
> > nobody complained about the missing SetName method at the SB API level I 
> > don't see a big need for exposing the Clone method there. At the same line 
> > if SetName/Clone isn't part of the SB API then I think we shouldn't 
> > document it at the webpage.
> 
> Seems like vending one of the actual backing objects as a synthetic object is 
> a reasonable thing to do (it's what you are doing internally).  But if we 
> don't allow a way to do that currently, then there's no reason to add one.
> 
> Jim
> 
> 
> >
> > (I will upload a fix for the spelling errors later)
> >
> >
> > https://reviews.llvm.org/D31371
> >
> >
> >
> 

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