ASTGen: Work around a retroactive conformance bug in Swift 6.2.

tshortli · tshortli · commit 80a292be00aa · 2025-10-26T18:00:05.000-07:00
The Swift 6.2 compiler emits spurious warnings about retroactive conformances
to protocols that are inherited through a protocol that is written module
qualified in the inheritance clause. Suppress the warnings by making the
inherited conformances explicit and module qualified.
diff --git a/lib/ASTGen/Sources/ASTGen/Bridge.swift b/lib/ASTGen/Sources/ASTGen/Bridge.swift
@@ -157,7 +157,11 @@ public func freeBridgedString(bridged: BridgedStringRef) {
   bridged.data?.deallocate()
 }
 
-extension BridgedStringRef: /*@retroactive*/ Swift.ExpressibleByStringLiteral {
+extension BridgedStringRef:
+  /*@retroactive*/ Swift.ExpressibleByStringLiteral,
+                   Swift.ExpressibleByExtendedGraphemeClusterLiteral,
+                   Swift.ExpressibleByUnicodeScalarLiteral
+{
   public init(stringLiteral str: StaticString) {
     self.init(data: str.utf8Start, count: str.utf8CodeUnitCount)
   }

Original file line number	Diff line number	Diff line change
`@@ -157,7 +157,11 @@ public func freeBridgedString(bridged: BridgedStringRef) {`
`157`	`157`	`bridged.data?.deallocate()`
`158`	`158`	`}`
`159`	`159`
`160`		`-extension BridgedStringRef: /@retroactive/ Swift.ExpressibleByStringLiteral {`
	`160`	`+extension BridgedStringRef:`
	`161`	`+ /@retroactive/ Swift.ExpressibleByStringLiteral,`
	`162`	`+ Swift.ExpressibleByExtendedGraphemeClusterLiteral,`
	`163`	`+ Swift.ExpressibleByUnicodeScalarLiteral`
	`164`	`+{`
`161`	`165`	`public init(stringLiteral str: StaticString) {`
`162`	`166`	`self.init(data: str.utf8Start, count: str.utf8CodeUnitCount)`
`163`	`167`	`}`