File: classes-optional.swift

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// RUN: %empty-directory(%t)
// RUN: %target-swift-frontend %s -enable-experimental-feature Embedded -c -o %t/main.o
// RUN: %target-clang %t/main.o -o %t/a.out -dead_strip
// RUN: %target-run %t/a.out | %FileCheck %s

// REQUIRES: swift_in_compiler
// REQUIRES: executable_test
// REQUIRES: optimized_stdlib
// REQUIRES: OS=macosx || OS=linux-gnu
// REQUIRES: swift_feature_Embedded

class Foo {
    var foo: Foo?
}

do {
  _ = Foo()
  print("OK!")
}
// CHECK: OK!