; RUN: llc -mtriple=x86_64-apple-darwin -O0 -filetype=obj -o %t < %s
; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck %s
; <rdar://problem/12566646>

source_filename = "test/DebugInfo/X86/empty-array.ll"

%class.A = type { [0 x i32] }

@a = global %class.A zeroinitializer, align 4, !dbg !0
; CHECK: DW_TAG_class_type
; CHECK:      DW_TAG_member
; CHECK-NEXT: DW_AT_name [DW_FORM_strp]  ( .debug_str[0x{{[0-9a-f]*}}] = "x")
; CHECK-NEXT: DW_AT_type [DW_FORM_ref4]  (cu + 0x{{[0-9a-f]*}} => {[[ARRAY:0x[0-9a-f]*]]}

; CHECK:      [[ARRAY]]: DW_TAG_array_type [{{.*}}] *
; CHECK-NEXT: DW_AT_type [DW_FORM_ref4]    (cu + 0x{{[0-9a-f]*}} => {[[BASETYPE:0x[0-9a-f]*]]}

; CHECK:      DW_TAG_subrange_type
; CHECK-NEXT: DW_AT_type [DW_FORM_ref4]  (cu + 0x{{[0-9a-f]*}} => {[[BASE2:0x[0-9a-f]*]]}
; CHECK-NOT:  DW_AT_upper_bound

; CHECK: [[BASETYPE]]: DW_TAG_base_type
; CHECK: [[BASE2]]: DW_TAG_base_type
; CHECK-NEXT: DW_AT_name
; CHECK-NEXT: DW_AT_byte_size [DW_FORM_data1]  (0x08)
; CHECK-NEXT: DW_AT_encoding [DW_FORM_data1]   (DW_ATE_unsigned)

!llvm.dbg.cu = !{!14}
!llvm.module.flags = !{!17}

!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = !DIGlobalVariable(name: "a", scope: null, file: !2, line: 1, type: !3, isLocal: false, isDefinition: true)
!2 = !DIFile(filename: "t.cpp", directory: "/Volumes/Sandbox/llvm")
!3 = !DICompositeType(tag: DW_TAG_class_type, name: "A", file: !2, line: 1, align: 32, elements: !4)
!4 = !{!5, !10}
!5 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !3, file: !2, line: 1, baseType: !6, flags: DIFlagPrivate)
!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, align: 32, elements: !8)
!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!8 = !{!9}
!9 = !DISubrange(count: -1)
!10 = !DISubprogram(name: "A", scope: !3, file: !2, line: 1, type: !11, isLocal: false, isDefinition: false, scopeLine: 1, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false)
!11 = !DISubroutineType(types: !12)
!12 = !{null, !13}
!13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !3, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
!14 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "clang version 3.3 (trunk 169136)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !15, retainedTypes: !15, globals: !16, imports: !15)
!15 = !{}
!16 = !{!0}
!17 = !{i32 1, !"Debug Info Version", i32 3}