On Fri, 27 Jan 2023, 19:24 samuel ammonius via Std-Proposals, <std-proposals@lists.isocpp.org> wrote:

Hello,

I have a proposal that I hope could make C++ possible

to mix with different compilers and programming languages

without having to use extern "C". It specifies things like

name mangling and how "this" is passed to methods, since

these things usually get in the way of mixing languages and

compilers with C++. It doesn't (shouldn't) interfere with any

other language features. I've written a small draft in plaintext

that's attached to this email. Thanks.

Sorry, but this is never going to work. Your mangling scheme is fatally flawed (why not choose one of the existing scheme that actually works?)

> In this case, "radius" will have the symbol "geometry_circle_radius"

So how would you mangle a global variable called "geometry_circle_radius"? You can't use valid identifiers as mangled names.

I'm sorry, but this proposal fails to address nearly every important aspect of name mangling. Even if we could specify a standardized mangling scheme, it wouldn't look like this.

And doing that would not be a pure extension with no impact on the current language, because it would require incompatible changes from at least one existing, widely-used compiler.