Questions about (function type) mangling

[dan-zheng]

Thanks for the swift replies! The purpose of mangling makes sense.

Some concrete follow-up questions:

• Is it worth pursuing a more flexible scheme for mangling a list of function type modifiers? And is it possible to do so in a backwards-compatible way? Please see my post above.
• Regarding @differentiable functions: which @differentiable + @xxx modifier combinations would you recommend mangling in the current scheme?
  • Currently, https://github.com/apple/swift/pull/25804 adds @differentiable + @escaping/@noescape modifier combinations.

@Slava_Pestov

Perhaps we should not allow @convention(foo) @autoclosure at all. Do you mind filing a bug so that we can revisit this some day?

Filed SR-11027! @convention(c) @autoclosure actually crashes today.