1; RUN: llc < %s -filetype=obj -o - | llvm-readobj - --codeview | FileCheck %s 2; RUN: llc < %s -o - | llvm-mc -filetype=obj --triple=x86_64-windows | llvm-readobj - --codeview | FileCheck %s 3 4; We used to crash on this input because UnicodeString is a forward declaration 5; with no size. Our array type logic wanted to assert the size of the elements 6; times the length matched the overall size. 7 8; C++ source to regenerate: 9; struct UnicodeString; 10; struct GetFwdDecl { 11; static UnicodeString format; 12; }; 13; GetFwdDecl force_fwd_decl; 14; struct UnicodeString { 15; private: 16; virtual ~UnicodeString(); 17; }; 18; struct UseCompleteType { 19; UseCompleteType(); 20; ~UseCompleteType(); 21; UnicodeString currencySpcAfterSym[1]; 22; }; 23; UseCompleteType require_complete; 24 25; CHECK: Array ({{.*}}) { 26; CHECK-NEXT: TypeLeafKind: LF_ARRAY (0x1503) 27; CHECK-NEXT: ElementType: UnicodeString 28; CHECK-NEXT: IndexType: unsigned __int64 (0x23) 29; CHECK-NEXT: SizeOf: 8 30; CHECK-NEXT: Name: 31; CHECK-NEXT: } 32 33; ModuleID = 't.cpp' 34source_filename = "t.cpp" 35target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128" 36target triple = "x86_64-pc-windows-msvc" 37 38%struct.GetFwdDecl = type { i8 } 39%struct.UseCompleteType = type { [1 x %struct.UnicodeString] } 40%struct.UnicodeString = type { i32 (...)** } 41 42$"\01??_DUseCompleteType@@QEAA@XZ" = comdat any 43 44@"\01?force_fwd_decl@@3UGetFwdDecl@@A" = global %struct.GetFwdDecl zeroinitializer, align 1, !dbg !0 45@"\01?require_complete@@3UUseCompleteType@@A" = global %struct.UseCompleteType zeroinitializer, align 8, !dbg !6 46@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_t.cpp, i8* null }] 47 48; Function Attrs: nounwind 49define internal void @"\01??__Erequire_complete@@YAXXZ"() #0 !dbg !27 { 50entry: 51 %call = call %struct.UseCompleteType* @"\01??0UseCompleteType@@QEAA@XZ"(%struct.UseCompleteType* @"\01?require_complete@@3UUseCompleteType@@A"), !dbg !30 52 %0 = call i32 @atexit(void ()* @"\01??__Frequire_complete@@YAXXZ") #2, !dbg !30 53 ret void, !dbg !30 54} 55 56declare %struct.UseCompleteType* @"\01??0UseCompleteType@@QEAA@XZ"(%struct.UseCompleteType* returned) unnamed_addr #1 57 58; Function Attrs: nounwind 59define linkonce_odr void @"\01??_DUseCompleteType@@QEAA@XZ"(%struct.UseCompleteType* %this) unnamed_addr #0 comdat align 2 !dbg !31 { 60entry: 61 %this.addr = alloca %struct.UseCompleteType*, align 8 62 store %struct.UseCompleteType* %this, %struct.UseCompleteType** %this.addr, align 8 63 call void @llvm.dbg.declare(metadata %struct.UseCompleteType** %this.addr, metadata !32, metadata !34), !dbg !35 64 %this1 = load %struct.UseCompleteType*, %struct.UseCompleteType** %this.addr, align 8 65 call void @"\01??1UseCompleteType@@QEAA@XZ"(%struct.UseCompleteType* %this1), !dbg !36 66 ret void, !dbg !36 67} 68 69; Function Attrs: nounwind 70 71define internal void @"\01??__Frequire_complete@@YAXXZ"() #0 !dbg !37 { 72entry: 73 call void @"\01??_DUseCompleteType@@QEAA@XZ"(%struct.UseCompleteType* @"\01?require_complete@@3UUseCompleteType@@A"), !dbg !38 74 ret void, !dbg !39 75} 76 77; Function Attrs: nounwind 78declare i32 @atexit(void ()*) #2 79 80; Function Attrs: nounwind readnone 81declare void @llvm.dbg.declare(metadata, metadata, metadata) #3 82 83declare void @"\01??1UseCompleteType@@QEAA@XZ"(%struct.UseCompleteType*) unnamed_addr #1 84 85; Function Attrs: nounwind 86define internal void @_GLOBAL__sub_I_t.cpp() #0 !dbg !41 { 87entry: 88 call void @"\01??__Erequire_complete@@YAXXZ"(), !dbg !43 89 ret void 90} 91 92attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-features"="+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } 93attributes #1 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-features"="+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } 94attributes #2 = { nounwind } 95attributes #3 = { nounwind readnone } 96 97!llvm.dbg.cu = !{!2} 98!llvm.module.flags = !{!24, !25} 99!llvm.ident = !{!26} 100 101!0 = distinct !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 102!1 = !DIGlobalVariable(name: "force_fwd_decl", linkageName: "\01?force_fwd_decl@@3UGetFwdDecl@@A", scope: !2, file: !8, line: 5, type: !21, isLocal: false, isDefinition: true) 103!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 4.0.0 (trunk 281056) (llvm/trunk 281051)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5) 104!3 = !DIFile(filename: "<stdin>", directory: "C:\5Csrc\5Cllvm\5Cbuild") 105!4 = !{} 106!5 = !{!0, !6} 107!6 = distinct !DIGlobalVariableExpression(var: !7, expr: !DIExpression()) 108!7 = !DIGlobalVariable(name: "require_complete", linkageName: "\01?require_complete@@3UUseCompleteType@@A", scope: !2, file: !8, line: 15, type: !9, isLocal: false, isDefinition: true) 109!8 = !DIFile(filename: "t.cpp", directory: "C:\5Csrc\5Cllvm\5Cbuild") 110!9 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "UseCompleteType", file: !8, line: 10, size: 64, align: 64, elements: !10, identifier: ".?AUUseCompleteType@@") 111!10 = !{!11, !16, !20} 112!11 = !DIDerivedType(tag: DW_TAG_member, name: "currencySpcAfterSym", scope: !9, file: !8, line: 13, baseType: !12, size: 64, align: 64) 113!12 = !DICompositeType(tag: DW_TAG_array_type, baseType: !13, size: 64, align: 64, elements: !14) 114!13 = !DICompositeType(tag: DW_TAG_structure_type, name: "UnicodeString", file: !8, line: 1, flags: DIFlagFwdDecl, identifier: ".?AUUnicodeString@@") 115!14 = !{!15} 116!15 = !DISubrange(count: 1) 117!16 = !DISubprogram(name: "UseCompleteType", scope: !9, file: !8, line: 11, type: !17, isLocal: false, isDefinition: false, scopeLine: 11, flags: DIFlagPrototyped, isOptimized: false) 118!17 = !DISubroutineType(types: !18) 119!18 = !{null, !19} 120!19 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer) 121!20 = !DISubprogram(name: "~UseCompleteType", scope: !9, file: !8, line: 12, type: !17, isLocal: false, isDefinition: false, scopeLine: 12, flags: DIFlagPrototyped, isOptimized: false) 122!21 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "GetFwdDecl", file: !8, line: 2, size: 8, align: 8, elements: !22, identifier: ".?AUGetFwdDecl@@") 123!22 = !{!23} 124!23 = !DIDerivedType(tag: DW_TAG_member, name: "format", scope: !21, file: !8, line: 3, baseType: !13, flags: DIFlagStaticMember) 125!24 = !{i32 2, !"CodeView", i32 1} 126!25 = !{i32 2, !"Debug Info Version", i32 3} 127!26 = !{!"clang version 4.0.0 (trunk 281056) (llvm/trunk 281051)"} 128!27 = distinct !DISubprogram(name: "??__Erequire_complete@@YAXXZ", scope: !8, file: !8, line: 15, type: !28, isLocal: true, isDefinition: true, scopeLine: 15, flags: DIFlagPrototyped, isOptimized: false, unit: !2, retainedNodes: !4) 129!28 = !DISubroutineType(types: !29) 130!29 = !{null} 131!30 = !DILocation(line: 15, scope: !27) 132!31 = distinct !DISubprogram(name: "~UseCompleteType", linkageName: "\01??_DUseCompleteType@@QEAA@XZ", scope: !9, file: !8, line: 12, type: !17, isLocal: false, isDefinition: true, scopeLine: 15, flags: DIFlagPrototyped, isOptimized: false, unit: !2, declaration: !20, retainedNodes: !4) 133!32 = !DILocalVariable(name: "this", arg: 1, scope: !31, type: !33, flags: DIFlagArtificial | DIFlagObjectPointer) 134!33 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64) 135!34 = !DIExpression() 136!35 = !DILocation(line: 0, scope: !31) 137!36 = !DILocation(line: 15, scope: !31) 138!37 = distinct !DISubprogram(name: "??__Frequire_complete@@YAXXZ", scope: !3, file: !3, line: 15, type: !28, isLocal: true, isDefinition: true, scopeLine: 15, flags: DIFlagPrototyped, isOptimized: false, unit: !2, retainedNodes: !4) 139!38 = !DILocation(line: 15, scope: !37) 140!39 = !DILocation(line: 15, scope: !40) 141!40 = !DILexicalBlockFile(scope: !37, file: !8, discriminator: 0) 142!41 = distinct !DISubprogram(linkageName: "_GLOBAL__sub_I_t.cpp", scope: !3, file: !3, type: !42, isLocal: true, isDefinition: true, flags: DIFlagArtificial, isOptimized: false, unit: !2, retainedNodes: !4) 143!42 = !DISubroutineType(types: !4) 144!43 = !DILocation(line: 0, scope: !41) 145 146