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1; RUN: llc %s -o - | FileCheck %s2 3; This test case caused UDTs to be discovered during UDT emission, which can4; 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_UDT18; CHECK: .long {{.*}} # Type19; CHECK: .asciz "a"20; CHECK: .p2align 221; CHECK: .short 4360 # Record kind: S_UDT22; CHECK: .long {{.*}} # Type23; CHECK: .asciz "c"24; CHECK: .p2align 225; No other S_UDTs.26; CHECK-NOT: S_UDT27; 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 optnone38define dso_local ptr @"??0c@@AEAA@XZ"(ptr returned %this) unnamed_addr #0 align 2 !dbg !7 {39entry:40 %this.addr = alloca ptr, align 841 store ptr %this, ptr %this.addr, align 842 call void @llvm.dbg.declare(metadata ptr %this.addr, metadata !20, metadata !DIExpression()), !dbg !2243 %this1 = load ptr, ptr %this.addr, align 844 ret ptr %this1, !dbg !2345}46 47; Function Attrs: nounwind readnone speculatable willreturn48declare void @llvm.dbg.declare(metadata, metadata, metadata) #149 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