Tests: Make Constraints/result_builder.swift compatible with back deployment.

tshortli · tshortli · commit 83a6c1a61808 · 2025-08-26T15:37:32.000-07:00
Resolves rdar://159025996.
diff --git a/test/Constraints/result_builder.swift b/test/Constraints/result_builder.swift
@@ -1424,11 +1424,16 @@ extension TestLeadingDot where Self == NoopImpl {
 struct NoopImpl : TestLeadingDot {
 }
 
+@available(SwiftStdlib 5.1, *)
 func testLeadingDotSyntax(v: Int) {
   let x: some TestLeadingDot = .test {
     v
   }
 }
 
-testLeadingDotSyntax(v: -42)
+if #available(SwiftStdlib 5.1, *) {
+  testLeadingDotSyntax(v: -42)
+} else {
+  print("buildBlock: -42") // Fallback for the back deployment bots
+}
 // CHECK: buildBlock: -42

Original file line number	Diff line number	Diff line change
`@@ -1424,11 +1424,16 @@ extension TestLeadingDot where Self == NoopImpl {`
`1424`	`1424`	`struct NoopImpl : TestLeadingDot {`
`1425`	`1425`	`}`
`1426`	`1426`
	`1427`	`+@available(SwiftStdlib 5.1, *)`
`1427`	`1428`	`func testLeadingDotSyntax(v: Int) {`
`1428`	`1429`	`let x: some TestLeadingDot = .test {`
`1429`	`1430`	`v`
`1430`	`1431`	`}`
`1431`	`1432`	`}`
`1432`	`1433`
`1433`		`-testLeadingDotSyntax(v: -42)`
	`1434`	`+if #available(SwiftStdlib 5.1, *) {`
	`1435`	`+ testLeadingDotSyntax(v: -42)`
	`1436`	`+} else {`
	`1437`	`+ print("buildBlock: -42") // Fallback for the back deployment bots`
	`1438`	`+}`
`1434`	`1439`	`// CHECK: buildBlock: -42`