Make init(copying:) inlineable, even though its inline(never), to allow specialization.

airspeedswift · airspeedswift · commit fc25d80122e2 · 2018-02-02T07:39:03.000-08:00
diff --git a/stdlib/public/core/ArrayBufferProtocol.swift b/stdlib/public/core/ArrayBufferProtocol.swift
@@ -135,6 +135,7 @@ extension _ArrayBufferProtocol where Indices == CountableRange<Int>{
   }
 
   // Make sure the compiler does not inline _copyBuffer to reduce code size.
+  @_inlineable
   @inline(never)
   @_versioned
   internal init(copying buffer: Self) {

Original file line number	Diff line number	Diff line change
`@@ -135,6 +135,7 @@ extension _ArrayBufferProtocol where Indices == CountableRange<Int>{`
`135`	`135`	`}`
`136`	`136`
`137`	`137`	`// Make sure the compiler does not inline _copyBuffer to reduce code size.`
	`138`	`+ @_inlineable`
`138`	`139`	`@inline(never)`
`139`	`140`	`@_versioned`
`140`	`141`	`internal init(copying buffer: Self) {`