ObjC improvements and ObjC++

[Mark Mitchell]

> Some of the details are tricky, yes.  But just to state the obvious: we
> are not talking about extensions to C++, and we are not talking about
> changing the behavior of cc1plus.  We're talking about a new front
> end.  

Oh -- that wasn't obvious to me! :-)  I'd actually rather it wasn't a
new front end; reducing the number of executables rather than increasing
them was where I was hoping to go: one combined
C/C++/Objective-C/Objective-C++ executable.

> A pure extension seems like an unusually safe change.  I'm quite
> convinced that this work won't cause any cc1objplus regressions!

:-)  

However, the "if (OBJECTIVE_CPLUSPLUS)" bits in the C++ front end will
still add to the complexity; that's why I want to see the specs that
tell me what (for example) the new overload rules are.  Otherwise, I
won't be able to make changes to the overloading code with confidence.

Yours,

-- 
Mark Mitchell <mark@codesourcery.com>
CodeSourcery, LLC