1; RUN: llc %s -o - | FileCheck %s 2 3; This test case caused UDTs to be discovered during UDT emission, which can 4; cause iterator invalidation. 5 6; Based on this C++: 7; typedef int a; 8; struct b; 9; class c { 10; c(); 11; a b::*d; 12; }; 13; c::c() = default; 14 15; Previously there was an issue were the "a" typedef would be emitted twice. 16; Check that there are only two typedefs, a and c. 17; CHECK: .short 4360 # Record kind: S_UDT 18; CHECK: .long {{.*}} # Type 19; CHECK: .asciz "a" 20; CHECK: .p2align 2 21; CHECK: .short 4360 # Record kind: S_UDT 22; CHECK: .long {{.*}} # Type 23; CHECK: .asciz "c" 24; CHECK: .p2align 2 25; No other S_UDTs. 26; CHECK-NOT: S_UDT 27; CHECK: .cv_filechecksums 28 29 30; ModuleID = 't.cpp' 31source_filename = "t.cpp" 32target datalayout = "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 33target triple = "x86_64-pc-windows-msvc19.16.0" 34 35%class.c = type { { i32, i32, i32 } } 36 37; Function Attrs: noinline nounwind optnone 38define dso_local %class.c* @"??0c@@AEAA@XZ"(%class.c* returned %this) unnamed_addr #0 align 2 !dbg !7 { 39entry: 40 %this.addr = alloca %class.c*, align 8 41 store %class.c* %this, %class.c** %this.addr, align 8 42 call void @llvm.dbg.declare(metadata %class.c** %this.addr, metadata !20, metadata !DIExpression()), !dbg !22 43 %this1 = load %class.c*, %class.c** %this.addr, align 8 44 ret %class.c* %this1, !dbg !23 45} 46 47; Function Attrs: nounwind readnone speculatable willreturn 48declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 49 50attributes #0 = { noinline nounwind optnone } 51attributes #1 = { nounwind readnone speculatable willreturn } 52 53!llvm.dbg.cu = !{!0} 54!llvm.module.flags = !{!3, !4, !5} 55!llvm.ident = !{!6} 56 57!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 11.0.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None) 58!1 = !DIFile(filename: "<stdin>", directory: "C:/src/llvm-project/build", checksumkind: CSK_MD5, checksum: "4cbca1b19718cc292886f5df0b72cf37") 59!2 = !{} 60!3 = !{i32 2, !"CodeView", i32 1} 61!4 = !{i32 2, !"Debug Info Version", i32 3} 62!5 = !{i32 1, !"wchar_size", i32 2} 63!6 = !{!"clang version 11.0.0 "} 64!7 = distinct !DISubprogram(name: "c", linkageName: "??0c@@AEAA@XZ", scope: !9, file: !8, line: 7, type: !17, scopeLine: 7, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, declaration: !16, retainedNodes: !2) 65!8 = !DIFile(filename: "t.cpp", directory: "C:/src/llvm-project/build", checksumkind: CSK_MD5, checksum: "4cbca1b19718cc292886f5df0b72cf37") 66!9 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "c", file: !8, line: 3, size: 96, flags: DIFlagTypePassByValue | DIFlagNonTrivial, elements: !10, identifier: ".?AVc@@") 67!10 = !{!11, !16} 68!11 = !DIDerivedType(tag: DW_TAG_member, name: "d", scope: !9, file: !8, line: 5, baseType: !12, size: 96) 69!12 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !13, size: 96, extraData: !15) 70!13 = !DIDerivedType(tag: DW_TAG_typedef, name: "a", file: !8, line: 1, baseType: !14) 71!14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 72!15 = !DICompositeType(tag: DW_TAG_structure_type, name: "b", file: !8, line: 2, flags: DIFlagFwdDecl | DIFlagNonTrivial, identifier: ".?AUb@@") 73!16 = !DISubprogram(name: "c", scope: !9, file: !8, line: 4, type: !17, scopeLine: 4, flags: DIFlagPrototyped, spFlags: 0) 74!17 = !DISubroutineType(types: !18) 75!18 = !{null, !19} 76!19 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer) 77!20 = !DILocalVariable(name: "this", arg: 1, scope: !7, type: !21, flags: DIFlagArtificial | DIFlagObjectPointer) 78!21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64) 79!22 = !DILocation(line: 0, scope: !7) 80!23 = !DILocation(line: 7, scope: !7) 81