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carbon-lang/toolchain/lower/testdata/interop/cpp/class/import/dynamic.carbon
T
David BlaikieandRichard Smith 843323b864 Export virtual functions when exporting a class definition (#7210) 
This allows Clang to correctly generate the vtable for the exported
class.

There's still something wrong with new virtual functions in the Carbon
type (left a TODO) - I thought it might be related to not flagging
the CXXMethodDecl as virtual, but my initial experiments don't seem to
back that up, so I'll look into it further separately.

There's also a test regression due to an virtual (well, abstract
specifically, but I think it'd happen with a virtual one too) function
in an abstract class taking `self` by value being rejected since
the abstract class can't be instantiated. Not sure if this is a correct
change - the test's behavior could be preserved by using `ref self`
instnead of `self` in this function. Is that reasonable/expected? Should
we not require a type to be complete when passing by value if we can
compute the value representation without such completeness?

---------

Co-authored-by: Richard Smith <richard@metafoo.co.uk>
2026-05-15 23:53:12 +00:00

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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/primitives.carbon
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/interop/cpp/class/import/dynamic.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/interop/cpp/class/import/dynamic.carbon
// --- dynamic_base_from_cpp.carbon
library "[[@TEST_NAME]]";
import Cpp;
inline Cpp '''
struct FurtherBase {
virtual auto further_base_func() -> void;
};
struct Base: FurtherBase {
int i;
virtual auto func() & -> void;
};
__attribute__((optnone)) auto Use(Base& b) {
}
''';
base class Derived {
extend base: Cpp.Base;
// TODO: `other_func` should appear in the vtable (it currently doesn't
// maybe because the CXXMethodDecl isn't marked as virtual)
virtual fn other_func[unused self: Self]() {
}
override fn func[unused ref self: Self]() {
}
}
inline Cpp '''
// TODO: Carbon lowering should request clang to generate the vtable.
void WorkaroundToEmitCtorAndVtable() {
Carbon::Derived d;
}
// TODO: Carbon lowering should emit initialization that refers to the
// Clang-lowered vtable.
auto DoThing() -> void {
Carbon::Derived d;
Use(d);
}
''';
// CHECK:STDOUT: ; ModuleID = 'dynamic_base_from_cpp.carbon'
// CHECK:STDOUT: source_filename = "dynamic_base_from_cpp.carbon"
// CHECK:STDOUT: target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
// CHECK:STDOUT: target triple = "x86_64-unknown-linux-gnu"
// CHECK:STDOUT:
// CHECK:STDOUT: %"class.Carbon::Derived" = type { %struct.Base.base, [4 x i8] }
// CHECK:STDOUT: %struct.Base.base = type <{ %struct.FurtherBase, i32 }>
// CHECK:STDOUT: %struct.FurtherBase = type { ptr }
// CHECK:STDOUT:
// CHECK:STDOUT: $_ZN6Carbon7DerivedC2Ev = comdat any
// CHECK:STDOUT:
// CHECK:STDOUT: $_ZN6Carbon7DerivedD2Ev = comdat any
// CHECK:STDOUT:
// CHECK:STDOUT: $_ZN4BaseC2Ev = comdat any
// CHECK:STDOUT:
// CHECK:STDOUT: $_ZN11FurtherBaseC2Ev = comdat any
// CHECK:STDOUT:
// CHECK:STDOUT: $_ZTVN6Carbon7DerivedE = comdat any
// CHECK:STDOUT:
// CHECK:STDOUT: $_ZTIN6Carbon7DerivedE = comdat any
// CHECK:STDOUT:
// CHECK:STDOUT: $_ZTSN6Carbon7DerivedE = comdat any
// CHECK:STDOUT:
// CHECK:STDOUT: @_ZTVN6Carbon7DerivedE = linkonce_odr dso_local unnamed_addr constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr @_ZTIN6Carbon7DerivedE, ptr @_ZN11FurtherBase17further_base_funcEv, ptr @_ZNR6Carbon7Derived4funcEv] }, comdat, align 8
// CHECK:STDOUT: @_ZTIN6Carbon7DerivedE = linkonce_odr dso_local constant { ptr, ptr, ptr } { ptr getelementptr inbounds (ptr, ptr @_ZTVN10__cxxabiv120__si_class_type_infoE, i64 2), ptr @_ZTSN6Carbon7DerivedE, ptr @_ZTI4Base }, comdat, align 8
// CHECK:STDOUT: @_ZTVN10__cxxabiv120__si_class_type_infoE = external global [0 x ptr]
// CHECK:STDOUT: @_ZTSN6Carbon7DerivedE = linkonce_odr dso_local constant [18 x i8] c"N6Carbon7DerivedE\00", comdat, align 1
// CHECK:STDOUT: @_ZTI4Base = external constant ptr
// CHECK:STDOUT: @_ZTV4Base = available_externally unnamed_addr constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr @_ZTI4Base, ptr @_ZN11FurtherBase17further_base_funcEv, ptr @_ZNR4Base4funcEv] }, align 8
// CHECK:STDOUT: @_ZTV11FurtherBase = available_externally unnamed_addr constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr @_ZTI11FurtherBase, ptr @_ZN11FurtherBase17further_base_funcEv] }, align 8
// CHECK:STDOUT: @_ZTI11FurtherBase = external constant ptr
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: mustprogress noinline nounwind optnone uwtable
// CHECK:STDOUT: define dso_local void @_Z3UseR4Base(ptr noundef nonnull align 8 dereferenceable(12) %b) #0 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %b.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %b, ptr %b.addr, align 8, !tbaa !11
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: mustprogress nounwind uwtable
// CHECK:STDOUT: define dso_local void @_Z29WorkaroundToEmitCtorAndVtablev() #1 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %d = alloca %"class.Carbon::Derived", align 8
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %d) #5
// CHECK:STDOUT: call void @_ZN6Carbon7DerivedC2Ev(ptr noundef nonnull align 8 dereferenceable(12) %d) #5
// CHECK:STDOUT: call void @_ZN6Carbon7DerivedD2Ev(ptr noundef nonnull align 8 dead_on_return(12) dereferenceable(12) %d) #5
// CHECK:STDOUT: call void @llvm.lifetime.end.p0(ptr %d) #5
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.lifetime.start.p0(ptr captures(none)) #2
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: inlinehint mustprogress nounwind uwtable
// CHECK:STDOUT: define linkonce_odr dso_local void @_ZN6Carbon7DerivedC2Ev(ptr noundef nonnull align 8 dereferenceable(12) %this) unnamed_addr #3 comdat align 2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %this.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !14
// CHECK:STDOUT: %this1 = load ptr, ptr %this.addr, align 8
// CHECK:STDOUT: call void @_ZN4BaseC2Ev(ptr noundef nonnull align 8 dereferenceable(12) %this1) #5
// CHECK:STDOUT: store ptr getelementptr inbounds inrange(-16, 16) ({ [4 x ptr] }, ptr @_ZTVN6Carbon7DerivedE, i32 0, i32 0, i32 2), ptr %this1, align 8, !tbaa !16
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: inlinehint mustprogress nounwind uwtable
// CHECK:STDOUT: define linkonce_odr dso_local void @_ZN6Carbon7DerivedD2Ev(ptr noundef nonnull align 8 dead_on_return(12) dereferenceable(12) %this) unnamed_addr #3 comdat align 2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %this.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !14
// CHECK:STDOUT: %this1 = load ptr, ptr %this.addr, align 8
// CHECK:STDOUT: store ptr getelementptr inbounds inrange(-16, 16) ({ [4 x ptr] }, ptr @_ZTVN6Carbon7DerivedE, i32 0, i32 0, i32 2), ptr %this1, align 8, !tbaa !16
// CHECK:STDOUT: call void @"_C__destroy_thunk:thunk.Derived.Main"(ptr noundef nonnull align 8 dereferenceable(12) %this1)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.lifetime.end.p0(ptr captures(none)) #2
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: mustprogress nounwind uwtable
// CHECK:STDOUT: define dso_local void @_Z7DoThingv() #1 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %d = alloca %"class.Carbon::Derived", align 8
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %d) #5
// CHECK:STDOUT: call void @_ZN6Carbon7DerivedC2Ev(ptr noundef nonnull align 8 dereferenceable(12) %d) #5
// CHECK:STDOUT: call void @_Z3UseR4Base(ptr noundef nonnull align 8 dereferenceable(12) %d)
// CHECK:STDOUT: call void @_ZN6Carbon7DerivedD2Ev(ptr noundef nonnull align 8 dead_on_return(12) dereferenceable(12) %d) #5
// CHECK:STDOUT: call void @llvm.lifetime.end.p0(ptr %d) #5
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_ZN11FurtherBase17further_base_funcEv(ptr noundef nonnull align 8 dereferenceable(8)) unnamed_addr #4
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_ZNR4Base4funcEv(ptr noundef nonnull align 8 dereferenceable(12)) unnamed_addr #4
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_Cother_func.Derived.Main(ptr %self) #5 !dbg !18 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !24
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_Cfunc.Derived.Main(ptr %self) #5 !dbg !25 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !28
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline nounwind
// CHECK:STDOUT: define void @"_C__destroy_thunk:thunk.Derived.Main"(ptr %self) #6 !dbg !29 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_COp.12e0d0434542305a:core.Destroy.Core"(ptr %self), !dbg !32
// CHECK:STDOUT: ret void, !dbg !32
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.bfe31446004e2b71:core.Destroy.Core"(ptr %self) #5 !dbg !33 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !36
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.12e0d0434542305a:core.Destroy.Core"(ptr %self) #5 !dbg !37 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !40
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_Cfunc__carbon_thunk.Derived.Main(ptr %self) #5 !dbg !41 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %Derived.func.call.vtable = load ptr, ptr %self, align 8, !dbg !44
// CHECK:STDOUT: %Derived.func.call = call ptr @llvm.load.relative.i32(ptr %Derived.func.call.vtable, i32 4), !dbg !44
// CHECK:STDOUT: call void %Derived.func.call(ptr %self), !dbg !44
// CHECK:STDOUT: ret void, !dbg !44
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_Cother_func__carbon_thunk.Derived.Main(ptr %self) #5 !dbg !45 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %Derived.other_func.call.vtable = load ptr, ptr %self, align 8, !dbg !48
// CHECK:STDOUT: %Derived.other_func.call = call ptr @llvm.load.relative.i32(ptr %Derived.other_func.call.vtable, i32 8), !dbg !48
// CHECK:STDOUT: call void %Derived.other_func.call(ptr %self), !dbg !48
// CHECK:STDOUT: ret void, !dbg !48
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: read)
// CHECK:STDOUT: declare ptr @llvm.load.relative.i32(ptr, i32) #7
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: inlinehint mustprogress nounwind uwtable
// CHECK:STDOUT: define linkonce_odr dso_local void @_ZN4BaseC2Ev(ptr noundef nonnull align 8 dereferenceable(12) %this) unnamed_addr #3 comdat align 2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %this.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !11
// CHECK:STDOUT: %this1 = load ptr, ptr %this.addr, align 8
// CHECK:STDOUT: call void @_ZN11FurtherBaseC2Ev(ptr noundef nonnull align 8 dereferenceable(8) %this1) #5
// CHECK:STDOUT: store ptr getelementptr inbounds inrange(-16, 16) ({ [4 x ptr] }, ptr @_ZTV4Base, i32 0, i32 0, i32 2), ptr %this1, align 8, !tbaa !16
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress nounwind uwtable
// CHECK:STDOUT: define internal void @_ZNR6Carbon7Derived4funcEv(ptr noundef nonnull align 8 dereferenceable(12) %this) unnamed_addr #8 align 2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %this.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !14
// CHECK:STDOUT: %this1 = load ptr, ptr %this.addr, align 8
// CHECK:STDOUT: call void @_Cfunc__carbon_thunk.Derived.Main(ptr noundef nonnull align 8 dereferenceable(12) %this1)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: inlinehint mustprogress nounwind uwtable
// CHECK:STDOUT: define linkonce_odr dso_local void @_ZN11FurtherBaseC2Ev(ptr noundef nonnull align 8 dereferenceable(8) %this) unnamed_addr #3 comdat align 2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %this.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !49
// CHECK:STDOUT: %this1 = load ptr, ptr %this.addr, align 8
// CHECK:STDOUT: store ptr getelementptr inbounds inrange(-16, 8) ({ [3 x ptr] }, ptr @_ZTV11FurtherBase, i32 0, i32 0, i32 2), ptr %this1, align 8, !tbaa !16
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @_ZN6Carbon7DerivedC2Ev, { 1, 0 }
// CHECK:STDOUT: uselistorder ptr @_ZN6Carbon7DerivedD2Ev, { 1, 0 }
// CHECK:STDOUT: uselistorder ptr @_ZN11FurtherBase17further_base_funcEv, { 2, 1, 0 }
// CHECK:STDOUT: uselistorder ptr @llvm.load.relative.i32, { 1, 0 }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { mustprogress noinline nounwind optnone uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
// CHECK:STDOUT: attributes #1 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
// CHECK:STDOUT: attributes #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT: attributes #3 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
// CHECK:STDOUT: attributes #4 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
// CHECK:STDOUT: attributes #5 = { nounwind }
// CHECK:STDOUT: attributes #6 = { alwaysinline nounwind }
// CHECK:STDOUT: attributes #7 = { nocallback nofree nosync nounwind willreturn memory(argmem: read) }
// CHECK:STDOUT: attributes #8 = { alwaysinline mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1, !2, !3, !4}
// CHECK:STDOUT: !llvm.dbg.cu = !{!5}
// CHECK:STDOUT: !llvm.errno.tbaa = !{!7}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = !{i32 8, !"PIC Level", i32 2}
// CHECK:STDOUT: !3 = !{i32 7, !"PIE Level", i32 2}
// CHECK:STDOUT: !4 = !{i32 7, !"uwtable", i32 2}
// CHECK:STDOUT: !5 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !6, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !6 = !DIFile(filename: "dynamic_base_from_cpp.carbon", directory: "")
// CHECK:STDOUT: !7 = !{!8, !8, i64 0}
// CHECK:STDOUT: !8 = !{!"int", !9, i64 0}
// CHECK:STDOUT: !9 = !{!"omnipotent char", !10, i64 0}
// CHECK:STDOUT: !10 = !{!"Simple C++ TBAA"}
// CHECK:STDOUT: !11 = !{!12, !12, i64 0}
// CHECK:STDOUT: !12 = !{!"p1 _ZTS4Base", !13, i64 0}
// CHECK:STDOUT: !13 = !{!"any pointer", !9, i64 0}
// CHECK:STDOUT: !14 = !{!15, !15, i64 0}
// CHECK:STDOUT: !15 = !{!"p1 _ZTSN6Carbon7DerivedE", !13, i64 0}
// CHECK:STDOUT: !16 = !{!17, !17, i64 0}
// CHECK:STDOUT: !17 = !{!"vtable pointer", !10, i64 0}
// CHECK:STDOUT: !18 = distinct !DISubprogram(name: "other_func", linkageName: "_Cother_func.Derived.Main", scope: null, file: !6, line: 26, type: !19, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !22)
// CHECK:STDOUT: !19 = !DISubroutineType(types: !20)
// CHECK:STDOUT: !20 = !{null, !21}
// CHECK:STDOUT: !21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !22 = !{!23}
// CHECK:STDOUT: !23 = !DILocalVariable(arg: 1, scope: !18, type: !21)
// CHECK:STDOUT: !24 = !DILocation(line: 26, column: 3, scope: !18)
// CHECK:STDOUT: !25 = distinct !DISubprogram(name: "func", linkageName: "_Cfunc.Derived.Main", scope: null, file: !6, line: 28, type: !19, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !26)
// CHECK:STDOUT: !26 = !{!27}
// CHECK:STDOUT: !27 = !DILocalVariable(arg: 1, scope: !25, type: !21)
// CHECK:STDOUT: !28 = !DILocation(line: 28, column: 3, scope: !25)
// CHECK:STDOUT: !29 = distinct !DISubprogram(name: "__destroy_thunk", linkageName: "_C__destroy_thunk:thunk.Derived.Main", scope: null, file: !6, line: 22, type: !19, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !30)
// CHECK:STDOUT: !30 = !{!31}
// CHECK:STDOUT: !31 = !DILocalVariable(arg: 1, scope: !29, type: !21)
// CHECK:STDOUT: !32 = !DILocation(line: 22, column: 1, scope: !29)
// CHECK:STDOUT: !33 = distinct !DISubprogram(name: "Op", linkageName: "_COp.bfe31446004e2b71:core.Destroy.Core", scope: null, file: !6, line: 22, type: !19, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !34)
// CHECK:STDOUT: !34 = !{!35}
// CHECK:STDOUT: !35 = !DILocalVariable(arg: 1, scope: !33, type: !21)
// CHECK:STDOUT: !36 = !DILocation(line: 22, column: 1, scope: !33)
// CHECK:STDOUT: !37 = distinct !DISubprogram(name: "Op", linkageName: "_COp.12e0d0434542305a:core.Destroy.Core", scope: null, file: !6, line: 22, type: !19, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !38)
// CHECK:STDOUT: !38 = !{!39}
// CHECK:STDOUT: !39 = !DILocalVariable(arg: 1, scope: !37, type: !21)
// CHECK:STDOUT: !40 = !DILocation(line: 22, column: 1, scope: !37)
// CHECK:STDOUT: !41 = distinct !DISubprogram(name: "func__carbon_thunk", linkageName: "_Cfunc__carbon_thunk.Derived.Main", scope: null, file: !6, line: 28, type: !19, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !42)
// CHECK:STDOUT: !42 = !{!43}
// CHECK:STDOUT: !43 = !DILocalVariable(arg: 1, scope: !41, type: !21)
// CHECK:STDOUT: !44 = !DILocation(line: 28, column: 3, scope: !41)
// CHECK:STDOUT: !45 = distinct !DISubprogram(name: "other_func__carbon_thunk", linkageName: "_Cother_func__carbon_thunk.Derived.Main", scope: null, file: !6, line: 26, type: !19, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !46)
// CHECK:STDOUT: !46 = !{!47}
// CHECK:STDOUT: !47 = !DILocalVariable(arg: 1, scope: !45, type: !21)
// CHECK:STDOUT: !48 = !DILocation(line: 26, column: 3, scope: !45)
// CHECK:STDOUT: !49 = !{!50, !50, i64 0}
// CHECK:STDOUT: !50 = !{!"p1 _ZTS11FurtherBase", !13, i64 0}
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