[cxx-abi-dev] Mangling of string literals versus variadic templates

[John McCall]

On Dec 16, 2013, at 6:07 PM, Richard Smith <richardsmith at google.com> wrote:
> On Mon, Dec 16, 2013 at 5:33 PM, John McCall <rjmccall at apple.com> wrote:
> On Dec 16, 2013, at 5:10 PM, Richard Smith <richardsmith at google.com> wrote:
> > Consider:
> 
> Remind me why it’s impossible to go back to the committee and repeatedly weaken any remaining guarantees about string literal addresses until none of this is important?
> 
> If you really want to go that way, how about striking this mangling from the Itanium ABI entirely and replacing it with a note saying that we believe this is a standard defect and aren't going to support it? Is a weak and defective spec here (only implemented by a single frontend, as far as I can tell) any better than no spec at all?

I’d be happy to strike it from the spec in that case, or at least mark it as a footnote for implementations that choose to care, if there are any.

If we left it as a footnote, I think your proposals seem sound, although I’d want the example to clarify that it’s also the same literal if multiply expanded by the pack expansion, which I’m not sure is guaranteed by the language.

John.
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