Reproducer for rdar://143582881.

Author: tshortli

test/Constraints/member_import_visibility.swift

@@ -0,0 +1,39 @@
+// RUN: %empty-directory(%t)
+// RUN: %empty-directory(%t/src)
+// RUN: split-file %s %t/src
+
+/// Build the library A
+// RUN: %target-swift-frontend -emit-module %t/src/A.swift \
+// RUN:   -module-name A \
+// RUN:   -emit-module-path %t/A.swiftmodule
+
+/// Build the library B
+// RUN: %target-swift-frontend -I %t -emit-module %t/src/B.swift \
+// RUN:   -module-name B \
+// RUN:   -emit-module-path %t/B.swiftmodule
+
+// RUN: %target-swift-frontend -typecheck -I %t %t/src/Main.swift %t/src/Other.swift -enable-upcoming-feature MemberImportVisibility
+
+// REQUIRES: swift_feature_MemberImportVisibility
+
+//--- A.swift
+public struct Test {
+  public init(a: Double) { }
+}
+
+//--- B.swift
+import A
+
+extension Test {
+  public init(a: Int) { fatalError() }
+}
+
+//--- Main.swift
+import A
+
+func test() {
+  _ = Test(a: 0) // Ok, selects the overload that takes Double.
+}
+
+//--- Other.swift
+import B

validation-test/Sema/rdar143582881.swift

@@ -0,0 +1,16 @@
+// RUN: %empty-directory(%t)
+// RUN: split-file %s %t
+
+// RUN: %target-swift-frontend -typecheck %t/Main.swift %t/Other.swift -enable-upcoming-feature MemberImportVisibility
+
+//--- Main.swift
+
+import Foundation
+
+func test() -> CGSize {
+  return CGSize(width: 60, height: 45)
+}
+
+//--- Other.swift
+
+import CoreGraphics