klimek added a comment.

In https://reviews.llvm.org/D33644#793577, @yvvan wrote:

> In https://reviews.llvm.org/D33644#793573, @klimek wrote:
>
> > In https://reviews.llvm.org/D33644#783903, @yvvan wrote:
> >
> > > Do not evaluate numbers.
> > >  Check for != "=" is needed not to mess with invalid default arguments or 
> > > their types (without it I get "const Bar& bar = =" when Bar is not 
> > > defined)
> >
> >
> > Shouldn't we than instead check that error case?
>
>
> I don't know the proper way to do that :) I also don't know the full amount 
> of errors that might cause such behavior.
>  You can suggest the solution if you have some idea. Current one is safe 
> because we just ignore any case that causes empty default string.


Taking your example "const Bar& bar = =" when Bar is not defined:
What happens now?  Will it be "const Bar& bar ="? I argue that is not better 
than "const Bar& bar = =".
Btw, can you add tests? I think that will make it easier to see what's actually 
happening.


https://reviews.llvm.org/D33644



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