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carbon-lang/toolchain/lower/testdata/interop/cpp/class/import/dynamic.carbon
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Richard Smith d8c4fc51cd Fix SemIR for derived-to-base conversion and lowering crash. (#7783) 
We use the same conversion codepath to handle both qualification
conversions and derived-to-base conversions, because we allow both to be
performed at once. However, we were previously modeling the
qualification conversion as happening *first*, and producing a result
whose type is the target type of the overall conversion (that is, the
base class type). That led to bogus SemIR, where a `Derived` -> `const
Base` conversion would first have a "compatible" conversion from
`Derived` to `const Base`, *then* an access of the base subobject (of
type `const Base`, within an object of type `const Base`).

We now reverse the order: first we do a derived-to-base conversion,
which already has logic to preserve qualifiers, and then we do any
necessary qualification conversions on the result to reach the overall
target type.

In passing, we now skip forming the `as_compatible` instruction at all
for a pure derived-to-base conversion that has no qualification
conversion, simplifying the SemIR by one instruction in the common case.
2026-09-15 23:11:51 +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;
virtual fn other_func(unused self) {
}
override fn func(unused ref self) {
}
}
fn DoThing() {
var d: Derived = {.base = Cpp.Base.Base()};
Cpp.Use(ref d);
}
// CHECK:STDOUT: ; ---
// 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: $_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: @_ZTV4Base = available_externally constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr @_ZTI4Base, ptr @_ZN11FurtherBase17further_base_funcEv, ptr @_ZNR4Base4funcEv] }, align 8
// CHECK:STDOUT: @_ZTV11FurtherBase = available_externally constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr @_ZTI11FurtherBase, ptr @_ZN11FurtherBase17further_base_funcEv] }, align 8
// CHECK:STDOUT: @_ZTVN6Carbon7DerivedE = linkonce_odr dso_local constant { [5 x ptr] } { [5 x ptr] [ptr null, ptr @_ZTIN6Carbon7DerivedE, ptr @_ZN11FurtherBase17further_base_funcEv, ptr @_ZNR6Carbon7Derived4funcEv, ptr @_ZNK6Carbon7Derived10other_funcEv] }, comdat, align 8
// CHECK:STDOUT: @_ZTI4Base = external constant ptr
// CHECK:STDOUT: @_ZTI11FurtherBase = external constant ptr
// 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:
// 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 !4
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_ZN11FurtherBase17further_base_funcEv(ptr noundef nonnull align 8 dereferenceable(8)) unnamed_addr #1
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_ZNR4Base4funcEv(ptr noundef nonnull align 8 dereferenceable(12)) unnamed_addr #1
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_Cother_func.Derived.Main(ptr %self) #2 !dbg !45 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !48
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_Cfunc.Derived.Main(ptr %self) #2 !dbg !50 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !53
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline nounwind
// CHECK:STDOUT: define weak_odr void @"_Cfunc:thunk:Base.Cpp:Derived.Main"(ptr %self) #3 !dbg !55 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_Cfunc.Derived.Main(ptr %self), !dbg !58
// CHECK:STDOUT: ret void, !dbg !58
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CDoThing.Main() #2 !dbg !60 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %d.var = alloca { [16 x i8] }, align 8, !dbg !61
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %d.var), !dbg !61
// CHECK:STDOUT: %.loc31_44.1.base = getelementptr inbounds nuw { [16 x i8] }, ptr %d.var, i32 0, i32 0, !dbg !62
// CHECK:STDOUT: call void @_ZN4BaseC1Ev.carbon_thunk.(ptr %.loc31_44.1.base), !dbg !63
// CHECK:STDOUT: %.loc31_44.7.base = getelementptr inbounds nuw { [16 x i8] }, ptr %d.var, i32 0, i32 0, !dbg !62
// CHECK:STDOUT: %.loc31_44.8.base = getelementptr inbounds nuw [16 x i8], ptr %.loc31_44.7.base, i32 0, i32 0, !dbg !62
// CHECK:STDOUT: %.loc31_44.9.vptr = getelementptr inbounds nuw [8 x i8], ptr %.loc31_44.8.base, i32 0, i32 0, !dbg !62
// CHECK:STDOUT: store ptr getelementptr inbounds inrange(-16, 24) ({ [5 x ptr] }, ptr @_ZTVN6Carbon7DerivedE, i32 0, i32 0, i32 2), ptr %.loc31_44.9.vptr, align 8, !dbg !62
// CHECK:STDOUT: %.loc32_11.2.base = getelementptr inbounds nuw { [16 x i8] }, ptr %d.var, i32 0, i32 0, !dbg !66
// CHECK:STDOUT: call void @_Z3UseR4Base(ptr %.loc32_11.2.base), !dbg !67
// CHECK:STDOUT: call void @"_COp.b25525d21a9bd472:core.Destroy.Core"(ptr %d.var), !dbg !61
// CHECK:STDOUT: ret void, !dbg !68
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress nounwind uwtable
// CHECK:STDOUT: define internal void @_ZN4BaseC1Ev.carbon_thunk.(ptr noundef %return) #4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %return.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %return, ptr %return.addr, align 8, !tbaa !4
// CHECK:STDOUT: %0 = load ptr, ptr %return.addr, align 8, !tbaa !4
// CHECK:STDOUT: call void @_ZN4BaseC2Ev(ptr noundef nonnull align 8 dereferenceable(12) %0) #2
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline nounwind
// CHECK:STDOUT: define weak_odr void @"_C__destroy_thunk:thunk.Derived.Main"(ptr %self) #3 !dbg !69 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_COp.b25525d21a9bd472:core.Destroy.Core"(ptr %self), !dbg !71
// CHECK:STDOUT: ret void, !dbg !71
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.0a0b9df20a60c6f6:core.Destroy.Core"(ptr %self) #2 !dbg !73 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !75
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.b25525d21a9bd472:core.Destroy.Core"(ptr %self) #2 !dbg !77 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !79
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_Cfunc__carbon_thunk.Derived.Main(ptr %self) #2 !dbg !81 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_Cfunc.Derived.Main(ptr %self), !dbg !83
// CHECK:STDOUT: ret void, !dbg !83
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_Cother_func__carbon_thunk.Derived.Main(ptr %self) #2 !dbg !85 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %Derived.other_func.call.vtable = load ptr, ptr %self, align 8, !dbg !87
// CHECK:STDOUT: %Derived.other_func.call = call ptr @llvm.load.relative.i32(ptr %Derived.other_func.call.vtable, i32 8), !dbg !87
// CHECK:STDOUT: call void %Derived.other_func.call(ptr %self), !dbg !87
// CHECK:STDOUT: ret void, !dbg !87
// 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)) #5
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: read)
// CHECK:STDOUT: declare ptr @llvm.load.relative.i32(ptr, i32) #6
// 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 #4 align 2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %this.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !94
// 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: alwaysinline mustprogress nounwind uwtable
// CHECK:STDOUT: define internal void @_ZNK6Carbon7Derived10other_funcEv(ptr noundef nonnull align 8 dereferenceable(12) %this) unnamed_addr #4 align 2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %this.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !94
// CHECK:STDOUT: %this1 = load ptr, ptr %this.addr, align 8
// CHECK:STDOUT: call void @_Cother_func__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 @_ZN4BaseC2Ev(ptr noundef nonnull align 8 dereferenceable(12) %this) unnamed_addr #7 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 !4
// CHECK:STDOUT: %this1 = load ptr, ptr %this.addr, align 8
// CHECK:STDOUT: call void @_ZN11FurtherBaseC2Ev(ptr noundef nonnull align 8 dereferenceable(8) %this1) #2
// 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 !90
// 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 #7 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 !92
// 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 !90
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @_ZN11FurtherBase17further_base_funcEv, { 2, 1, 0 }
// CHECK:STDOUT: uselistorder ptr @"_COp.b25525d21a9bd472:core.Destroy.Core", { 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 = { "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 = { nounwind }
// CHECK:STDOUT: attributes #3 = { alwaysinline nounwind }
// CHECK:STDOUT: attributes #4 = { 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: attributes #5 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT: attributes #6 = { nocallback nofree nosync nounwind willreturn memory(argmem: read) }
// CHECK:STDOUT: attributes #7 = { 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:
// CHECK:STDOUT: !llvm.dbg.cu = !{!38}
// CHECK:STDOUT: !llvm.module.flags = !{!99, !100, !101, !7, !8}
// CHECK:STDOUT: !llvm.errno.tbaa = !{!103}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{!"Simple C++ TBAA"}
// CHECK:STDOUT: !1 = !{!"omnipotent char", !0, i64 0}
// CHECK:STDOUT: !2 = !{!"any pointer", !1, i64 0}
// CHECK:STDOUT: !3 = !{!"p1 _ZTS4Base", !2, i64 0}
// CHECK:STDOUT: !4 = !{!3, !3, i64 0}
// CHECK:STDOUT: !7 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !8 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !37 = !DIFile(filename: "dynamic_base_from_cpp.carbon", directory: "")
// CHECK:STDOUT: !38 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !37, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !40 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !41 = !{null, !40}
// CHECK:STDOUT: !42 = !DISubroutineType(types: !41)
// CHECK:STDOUT: !43 = !{null}
// CHECK:STDOUT: !44 = !DISubroutineType(types: !43)
// CHECK:STDOUT: !45 = distinct !DISubprogram(name: "other_func", linkageName: "_Cother_func.Derived.Main", scope: null, file: !37, line: 24, type: !42, spFlags: DISPFlagDefinition, unit: !38, retainedNodes: !49)
// CHECK:STDOUT: !46 = !DILocalVariable(arg: 1, scope: !45, type: !40)
// CHECK:STDOUT: !48 = !DILocation(line: 24, column: 3, scope: !45)
// CHECK:STDOUT: !49 = !{!46}
// CHECK:STDOUT: !50 = distinct !DISubprogram(name: "func", linkageName: "_Cfunc.Derived.Main", scope: null, file: !37, line: 26, type: !42, spFlags: DISPFlagDefinition, unit: !38, retainedNodes: !54)
// CHECK:STDOUT: !51 = !DILocalVariable(arg: 1, scope: !50, type: !40)
// CHECK:STDOUT: !53 = !DILocation(line: 26, column: 3, scope: !50)
// CHECK:STDOUT: !54 = !{!51}
// CHECK:STDOUT: !55 = distinct !DISubprogram(name: "func", linkageName: "_Cfunc:thunk:Base.Cpp:Derived.Main", scope: null, file: !37, line: 26, type: !42, spFlags: DISPFlagDefinition, unit: !38, retainedNodes: !59)
// CHECK:STDOUT: !56 = !DILocalVariable(arg: 1, scope: !55, type: !40)
// CHECK:STDOUT: !58 = !DILocation(line: 26, column: 3, scope: !55)
// CHECK:STDOUT: !59 = !{!56}
// CHECK:STDOUT: !60 = distinct !DISubprogram(name: "DoThing", linkageName: "_CDoThing.Main", scope: null, file: !37, line: 30, type: !44, spFlags: DISPFlagDefinition, unit: !38)
// CHECK:STDOUT: !61 = !DILocation(line: 31, column: 3, scope: !60)
// CHECK:STDOUT: !62 = !DILocation(line: 31, column: 20, scope: !60)
// CHECK:STDOUT: !63 = !DILocation(line: 31, column: 29, scope: !60)
// CHECK:STDOUT: !66 = !DILocation(line: 32, column: 11, scope: !60)
// CHECK:STDOUT: !67 = !DILocation(line: 32, column: 3, scope: !60)
// CHECK:STDOUT: !68 = !DILocation(line: 30, column: 1, scope: !60)
// CHECK:STDOUT: !69 = distinct !DISubprogram(name: "__destroy_thunk", linkageName: "_C__destroy_thunk:thunk.Derived.Main", scope: null, file: !37, line: 22, type: !42, spFlags: DISPFlagDefinition, unit: !38, retainedNodes: !72)
// CHECK:STDOUT: !70 = !DILocalVariable(arg: 1, scope: !69, type: !40)
// CHECK:STDOUT: !71 = !DILocation(line: 22, column: 1, scope: !69)
// CHECK:STDOUT: !72 = !{!70}
// CHECK:STDOUT: !73 = distinct !DISubprogram(name: "Op", linkageName: "_COp.0a0b9df20a60c6f6:core.Destroy.Core", scope: null, file: !37, line: 22, type: !42, spFlags: DISPFlagDefinition, unit: !38, retainedNodes: !76)
// CHECK:STDOUT: !74 = !DILocalVariable(arg: 1, scope: !73, type: !40)
// CHECK:STDOUT: !75 = !DILocation(line: 22, column: 1, scope: !73)
// CHECK:STDOUT: !76 = !{!74}
// CHECK:STDOUT: !77 = distinct !DISubprogram(name: "Op", linkageName: "_COp.b25525d21a9bd472:core.Destroy.Core", scope: null, file: !37, line: 22, type: !42, spFlags: DISPFlagDefinition, unit: !38, retainedNodes: !80)
// CHECK:STDOUT: !78 = !DILocalVariable(arg: 1, scope: !77, type: !40)
// CHECK:STDOUT: !79 = !DILocation(line: 22, column: 1, scope: !77)
// CHECK:STDOUT: !80 = !{!78}
// CHECK:STDOUT: !81 = distinct !DISubprogram(name: "func__carbon_thunk", linkageName: "_Cfunc__carbon_thunk.Derived.Main", scope: null, file: !37, line: 26, type: !42, spFlags: DISPFlagDefinition, unit: !38, retainedNodes: !84)
// CHECK:STDOUT: !82 = !DILocalVariable(arg: 1, scope: !81, type: !40)
// CHECK:STDOUT: !83 = !DILocation(line: 26, column: 3, scope: !81)
// CHECK:STDOUT: !84 = !{!82}
// CHECK:STDOUT: !85 = distinct !DISubprogram(name: "other_func__carbon_thunk", linkageName: "_Cother_func__carbon_thunk.Derived.Main", scope: null, file: !37, line: 24, type: !42, spFlags: DISPFlagDefinition, unit: !38, retainedNodes: !88)
// CHECK:STDOUT: !86 = !DILocalVariable(arg: 1, scope: !85, type: !40)
// CHECK:STDOUT: !87 = !DILocation(line: 24, column: 3, scope: !85)
// CHECK:STDOUT: !88 = !{!86}
// CHECK:STDOUT: !89 = !{!"vtable pointer", !0, i64 0}
// CHECK:STDOUT: !90 = !{!89, !89, i64 0}
// CHECK:STDOUT: !91 = !{!"p1 _ZTS11FurtherBase", !2, i64 0}
// CHECK:STDOUT: !92 = !{!91, !91, i64 0}
// CHECK:STDOUT: !93 = !{!"p1 _ZTSN6Carbon7DerivedE", !2, i64 0}
// CHECK:STDOUT: !94 = !{!93, !93, i64 0}
// CHECK:STDOUT: !96 = !{!"int", !1, i64 0}
// CHECK:STDOUT: !99 = !{i32 8, !"PIC Level", i32 2}
// CHECK:STDOUT: !100 = !{i32 7, !"PIE Level", i32 2}
// CHECK:STDOUT: !101 = !{i32 7, !"uwtable", i32 2}
// CHECK:STDOUT: !102 = !{!"__libc_errno", !96, i64 0}
// CHECK:STDOUT: !103 = !{!102, !96, i64 0}
// CHECK:STDOUT:
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