[libcxx-dev] Option to disable inline namespacing completely?

Marshall Clow via libcxx-dev libcxx-dev at lists.llvm.org
Wed Nov 14 07:02:50 PST 2018

On Sun, Nov 11, 2018 at 9:49 PM Kristina Brooks via libcxx-dev <
libcxx-dev at lists.llvm.org> wrote:

> Hi,
> I was wondering, would it be possible to add an option to disable inline
> namespacing completely (as a CMake
> configuration flag) in libc++ for the sake of being able to use shorthand
> mangling and without having to resort to
> handling it on IA64 mangler level. This has many use cases for example
> distributions of anything that includes libc++ as
> one and only libc++ and does not allow non-vendor software to be
> installed. On an embedded system, assuming debug info
> is generated, and given how common some of the debug data takes a very
> significant amount of space given the complex
> definition of something like `std::__2::basic_string<...>` versus the
> short form (`std::string` having a shorthand
> mangling is a godsend since it's 95% shorter, not an accurate figure but
> basically definitely above 90%).

I'm confused here.
Why are you comparing `std::string` to `std::__2::basic_string<......" ?

`std::__2::string` is quite short.

-- Marshall
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