// RUN: %target-swift-frontend %s -module-name main -emit-ir -o - | %FileCheck -check-prefix=%target-ptrsize  --check-prefix=CHECK %s

import Builtin
import Swift

// 64: %T4main14Rdar15410780_CV = type <{ %TSSSg }>
// 64: %TSSSg = type <{ [16 x i8] }>

// 64: @"$s4main14Rdar15410780_AVWV" = internal constant {{.*}} i64 257
// 64: @"$s4main14Rdar15410780_BVWV" = internal constant {{.*}} i64 258
// 64: @"$s4main14Rdar15410780_CVWV" = internal constant {{.*}} i64 16


// 32: %T4main14Rdar15410780_CV = type <{ %TSSSg }>
// 32: %TSSSg = type <{ [12 x i8] }>

// 32: @"$s4main14Rdar15410780_AVWV" = internal constant {{.*}} i32 257
// 32: @"$s4main14Rdar15410780_BVWV" = internal constant {{.*}} i32 258
// 32: @"$s4main14Rdar15410780_CVWV" = internal constant {{.*}} i32 12


// <rdar://problem/15410780>
struct Rdar15410780_A {
  var a: Builtin.Int2048
  var b: Int8
}

struct Rdar15410780_B {
  var c: Rdar15410780_A?
}

struct Rdar15410780_C {
  var d: String?
}

enum EmptyEnum {
  case A
}

struct S {
  @_hasStorage let x: Int
  @_hasStorage let e: EmptyEnum
}

// CHECK-LABEL: define {{.*}} @testOffsetOfEmptyType
// CHECK:         ret ptr null
// CHECK:       }
sil @testOffsetOfEmptyType : $@convention(thin) () -> Builtin.RawPointer {
bb0:
  %0 = base_addr_for_offset $*S
  %1 = struct_element_addr %0 : $*S, #S.e
  %2 = address_to_pointer %1 : $*EmptyEnum to $Builtin.RawPointer
  return %2 : $Builtin.RawPointer
}