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carbon-lang/toolchain/lower/testdata/interop/cpp/nullptr.carbon
T
Richard Smith cefa0397bb More fixes to package and library fingerprinting. (#7297) 
Fix import logic to make all imported packages be children of the
`NameScopeId::Package` scope. Previously, indirectly-imported packages
would end up as children of their importing package's scope, which
resulted in them not being treated as packages at all, and in particular
not being fingerprinted as packages.

Fixing that caused a failure in the fingerprinting logic as we started
to encounter packages with no correspoding import scopes. Instead of
looking for import scopes, use a simpler mechanism to map packages to
their package names, and clean up.

Unfortunately the latter change churns all the fingerprints again :(
Hopefully this is the last time for a while.
2026-06-04 17:41:46 +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/full.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/nullptr.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/interop/cpp/nullptr.carbon
// --- simple.carbon
import Cpp inline '''
using nullptr_t = decltype(nullptr);
void TakePtr(int *p);
void TakeNullptr(nullptr_t n);
nullptr_t ReturnNullptr();
''';
fn PassNullptr() {
Cpp.TakePtr(Cpp.nullptr);
Cpp.TakeNullptr(Cpp.nullptr);
}
fn ReturnNullptr() -> Cpp.nullptr_t {
return Cpp.nullptr;
}
fn ReturnNullptrCopy() -> Cpp.nullptr_t {
var a: Cpp.nullptr_t = Cpp.nullptr;
return a;
}
fn ReturnConvertedNullptrIndirectly() -> Core.Optional(i32*) {
var a: Cpp.nullptr_t = Cpp.ReturnNullptr();
return a;
}
fn ReturnConvertedNullptrDirectly() -> Core.Optional(i32*) {
return Cpp.ReturnNullptr();
}
fn ConvertNullptrConstant() -> Core.Optional(i32*) {
return Cpp.nullptr;
}
// CHECK:STDOUT: ; ModuleID = 'simple.carbon'
// CHECK:STDOUT: source_filename = "simple.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: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CPassNullptr.Main() #0 !dbg !11 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc12_18.2.temp = alloca ptr, align 8, !dbg !14
// CHECK:STDOUT: %.loc14_22.1.temp = alloca ptr, align 8, !dbg !15
// CHECK:STDOUT: %Cpp.nullptr_t.as.ImplicitAs.impl.Convert.call = call ptr @"_CConvert.NullptrT.CppCompat.Core:ImplicitAs.269b9b75d033aabb.Core.84588f41d61dafba"(ptr poison), !dbg !14
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc12_18.2.temp), !dbg !14
// CHECK:STDOUT: store ptr %Cpp.nullptr_t.as.ImplicitAs.impl.Convert.call, ptr %.loc12_18.2.temp, align 8, !dbg !14
// CHECK:STDOUT: %.loc12_18.4 = load ptr, ptr %.loc12_18.2.temp, align 8, !dbg !14
// CHECK:STDOUT: call void @_Z7TakePtrPi(ptr %.loc12_18.4), !dbg !16
// CHECK:STDOUT: %Cpp.nullptr_t.as.Copy.impl.Op.call = call ptr @"_COp.NullptrT.CppCompat.Core:Copy.Core"(ptr poison), !dbg !15
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc14_22.1.temp), !dbg !15
// CHECK:STDOUT: store ptr %Cpp.nullptr_t.as.Copy.impl.Op.call, ptr %.loc14_22.1.temp, align 8, !dbg !15
// CHECK:STDOUT: call void @_Z11TakeNullptrDn.carbon_thunk._(ptr %.loc14_22.1.temp), !dbg !17
// CHECK:STDOUT: call void @"_COp.37a0be3fec6961f4:core.Destroy.Core"(ptr %.loc14_22.1.temp), !dbg !15
// CHECK:STDOUT: call void @"_COp.197d85846f87d79f:core.Destroy.Core"(ptr %.loc12_18.2.temp), !dbg !14
// CHECK:STDOUT: ret void, !dbg !18
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z7TakePtrPi(ptr noundef) #1
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress uwtable
// CHECK:STDOUT: define internal void @_Z11TakeNullptrDn.carbon_thunk._(ptr noundef %n) #2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %n.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %n, ptr %n.addr, align 8, !tbaa !19
// CHECK:STDOUT: %0 = load ptr, ptr %n.addr, align 8, !tbaa !19
// CHECK:STDOUT: call void @_Z11TakeNullptrDn(ptr null)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare ptr @"_COp.NullptrT.CppCompat.Core:Copy.Core"(ptr)
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.37a0be3fec6961f4:core.Destroy.Core"(ptr %self) #0 !dbg !22 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !28
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.958634845f762cfe:core.Destroy.Core"(ptr %self) #0 !dbg !29 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !32
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.197d85846f87d79f:core.Destroy.Core"(ptr %self) #0 !dbg !33 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !36
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define ptr @_CReturnNullptr.Main() #0 !dbg !37 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %Cpp.nullptr_t.as.Copy.impl.Op.call = call ptr @"_COp.NullptrT.CppCompat.Core:Copy.Core"(ptr poison), !dbg !40
// CHECK:STDOUT: ret ptr %Cpp.nullptr_t.as.Copy.impl.Op.call, !dbg !41
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define ptr @_CReturnNullptrCopy.Main() #0 !dbg !42 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %a.var = alloca ptr, align 8, !dbg !43
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %a.var), !dbg !43
// CHECK:STDOUT: %Cpp.nullptr_t.as.Copy.impl.Op.call.loc22 = call ptr @"_COp.NullptrT.CppCompat.Core:Copy.Core"(ptr poison), !dbg !44
// CHECK:STDOUT: store ptr %Cpp.nullptr_t.as.Copy.impl.Op.call.loc22, ptr %a.var, align 8, !dbg !43
// CHECK:STDOUT: %.loc23 = load ptr, ptr %a.var, align 8, !dbg !45
// CHECK:STDOUT: %Cpp.nullptr_t.as.Copy.impl.Op.call.loc23 = call ptr @"_COp.NullptrT.CppCompat.Core:Copy.Core"(ptr %.loc23), !dbg !45
// CHECK:STDOUT: call void @"_COp.37a0be3fec6961f4:core.Destroy.Core"(ptr %a.var), !dbg !43
// CHECK:STDOUT: ret ptr %Cpp.nullptr_t.as.Copy.impl.Op.call.loc23, !dbg !46
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define ptr @_CReturnConvertedNullptrIndirectly.Main() #0 !dbg !47 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %a.var = alloca ptr, align 8, !dbg !48
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %a.var), !dbg !48
// CHECK:STDOUT: call void @_Z13ReturnNullptrv.carbon_thunk.(ptr %a.var), !dbg !49
// CHECK:STDOUT: %.loc28_10 = load ptr, ptr %a.var, align 8, !dbg !50
// CHECK:STDOUT: %Cpp.nullptr_t.as.ImplicitAs.impl.Convert.call = call ptr @"_CConvert.NullptrT.CppCompat.Core:ImplicitAs.269b9b75d033aabb.Core.84588f41d61dafba"(ptr %.loc28_10), !dbg !51
// CHECK:STDOUT: call void @"_COp.37a0be3fec6961f4:core.Destroy.Core"(ptr %a.var), !dbg !48
// CHECK:STDOUT: ret ptr %Cpp.nullptr_t.as.ImplicitAs.impl.Convert.call, !dbg !51
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress uwtable
// CHECK:STDOUT: define internal void @_Z13ReturnNullptrv.carbon_thunk.(ptr noundef %return) #2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %return.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %return, ptr %return.addr, align 8, !tbaa !19
// CHECK:STDOUT: %0 = load ptr, ptr %return.addr, align 8, !tbaa !19
// CHECK:STDOUT: %call = call ptr @_Z13ReturnNullptrv()
// CHECK:STDOUT: store ptr %call, ptr %0, align 8, !tbaa !52
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define ptr @_CReturnConvertedNullptrDirectly.Main() #0 !dbg !54 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc32_28.1.temp = alloca ptr, align 8, !dbg !55
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc32_28.1.temp), !dbg !55
// CHECK:STDOUT: call void @_Z13ReturnNullptrv.carbon_thunk.(ptr %.loc32_28.1.temp), !dbg !55
// CHECK:STDOUT: %.loc32_28.4 = load ptr, ptr %.loc32_28.1.temp, align 8, !dbg !55
// CHECK:STDOUT: %Cpp.nullptr_t.as.ImplicitAs.impl.Convert.call = call ptr @"_CConvert.NullptrT.CppCompat.Core:ImplicitAs.269b9b75d033aabb.Core.84588f41d61dafba"(ptr %.loc32_28.4), !dbg !56
// CHECK:STDOUT: call void @"_COp.37a0be3fec6961f4:core.Destroy.Core"(ptr %.loc32_28.1.temp), !dbg !55
// CHECK:STDOUT: ret ptr %Cpp.nullptr_t.as.ImplicitAs.impl.Convert.call, !dbg !56
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define ptr @_CConvertNullptrConstant.Main() #0 !dbg !57 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %Cpp.nullptr_t.as.ImplicitAs.impl.Convert.call = call ptr @"_CConvert.NullptrT.CppCompat.Core:ImplicitAs.269b9b75d033aabb.Core.84588f41d61dafba"(ptr poison), !dbg !58
// CHECK:STDOUT: ret ptr %Cpp.nullptr_t.as.ImplicitAs.impl.Convert.call, !dbg !58
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr ptr @"_CConvert.NullptrT.CppCompat.Core:ImplicitAs.269b9b75d033aabb.Core.84588f41d61dafba"(ptr %self) #0 !dbg !59 {
// CHECK:STDOUT: %1 = call ptr @_CNone.Optional.Core.a636f8d928e21310(), !dbg !65
// CHECK:STDOUT: ret ptr %1, !dbg !66
// 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)) #3
// CHECK:STDOUT:
// CHECK:STDOUT: declare ptr @_CMake.NullptrT.CppCompat.Core()
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr ptr @_CNone.Optional.Core.a636f8d928e21310() #0 !dbg !67 {
// CHECK:STDOUT: ret ptr null, !dbg !69
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z11TakeNullptrDn(ptr) #1
// CHECK:STDOUT:
// CHECK:STDOUT: declare ptr @_Z13ReturnNullptrv() #1
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @"_CConvert.NullptrT.CppCompat.Core:ImplicitAs.269b9b75d033aabb.Core.84588f41d61dafba", { 3, 2, 1, 0 }
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 4, 3, 2, 1, 0 }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// 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 = { alwaysinline mustprogress 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 #3 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// 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: "simple.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 = distinct !DISubprogram(name: "PassNullptr", linkageName: "_CPassNullptr.Main", scope: null, file: !6, line: 11, type: !12, spFlags: DISPFlagDefinition, unit: !5)
// CHECK:STDOUT: !12 = !DISubroutineType(types: !13)
// CHECK:STDOUT: !13 = !{null}
// CHECK:STDOUT: !14 = !DILocation(line: 12, column: 15, scope: !11)
// CHECK:STDOUT: !15 = !DILocation(line: 14, column: 19, scope: !11)
// CHECK:STDOUT: !16 = !DILocation(line: 12, column: 3, scope: !11)
// CHECK:STDOUT: !17 = !DILocation(line: 14, column: 3, scope: !11)
// CHECK:STDOUT: !18 = !DILocation(line: 11, column: 1, scope: !11)
// CHECK:STDOUT: !19 = !{!20, !20, i64 0}
// CHECK:STDOUT: !20 = !{!"p1 std::nullptr_t", !21, i64 0}
// CHECK:STDOUT: !21 = !{!"any pointer", !9, i64 0}
// CHECK:STDOUT: !22 = distinct !DISubprogram(name: "Op", linkageName: "_COp.37a0be3fec6961f4:core.Destroy.Core", scope: null, file: !6, line: 14, type: !23, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !26)
// CHECK:STDOUT: !23 = !DISubroutineType(types: !24)
// CHECK:STDOUT: !24 = !{null, !25}
// CHECK:STDOUT: !25 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !26 = !{!27}
// CHECK:STDOUT: !27 = !DILocalVariable(arg: 1, scope: !22, type: !25)
// CHECK:STDOUT: !28 = !DILocation(line: 14, column: 19, scope: !22)
// CHECK:STDOUT: !29 = distinct !DISubprogram(name: "Op", linkageName: "_COp.958634845f762cfe:core.Destroy.Core", scope: null, file: !6, line: 12, type: !23, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !30)
// CHECK:STDOUT: !30 = !{!31}
// CHECK:STDOUT: !31 = !DILocalVariable(arg: 1, scope: !29, type: !25)
// CHECK:STDOUT: !32 = !DILocation(line: 12, column: 15, scope: !29)
// CHECK:STDOUT: !33 = distinct !DISubprogram(name: "Op", linkageName: "_COp.197d85846f87d79f:core.Destroy.Core", scope: null, file: !6, line: 12, type: !23, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !34)
// CHECK:STDOUT: !34 = !{!35}
// CHECK:STDOUT: !35 = !DILocalVariable(arg: 1, scope: !33, type: !25)
// CHECK:STDOUT: !36 = !DILocation(line: 12, column: 15, scope: !33)
// CHECK:STDOUT: !37 = distinct !DISubprogram(name: "ReturnNullptr", linkageName: "_CReturnNullptr.Main", scope: null, file: !6, line: 17, type: !38, spFlags: DISPFlagDefinition, unit: !5)
// CHECK:STDOUT: !38 = !DISubroutineType(types: !39)
// CHECK:STDOUT: !39 = !{!25}
// CHECK:STDOUT: !40 = !DILocation(line: 18, column: 10, scope: !37)
// CHECK:STDOUT: !41 = !DILocation(line: 18, column: 3, scope: !37)
// CHECK:STDOUT: !42 = distinct !DISubprogram(name: "ReturnNullptrCopy", linkageName: "_CReturnNullptrCopy.Main", scope: null, file: !6, line: 21, type: !38, spFlags: DISPFlagDefinition, unit: !5)
// CHECK:STDOUT: !43 = !DILocation(line: 22, column: 3, scope: !42)
// CHECK:STDOUT: !44 = !DILocation(line: 22, column: 26, scope: !42)
// CHECK:STDOUT: !45 = !DILocation(line: 23, column: 10, scope: !42)
// CHECK:STDOUT: !46 = !DILocation(line: 23, column: 3, scope: !42)
// CHECK:STDOUT: !47 = distinct !DISubprogram(name: "ReturnConvertedNullptrIndirectly", linkageName: "_CReturnConvertedNullptrIndirectly.Main", scope: null, file: !6, line: 26, type: !38, spFlags: DISPFlagDefinition, unit: !5)
// CHECK:STDOUT: !48 = !DILocation(line: 27, column: 3, scope: !47)
// CHECK:STDOUT: !49 = !DILocation(line: 27, column: 26, scope: !47)
// CHECK:STDOUT: !50 = !DILocation(line: 28, column: 10, scope: !47)
// CHECK:STDOUT: !51 = !DILocation(line: 28, column: 3, scope: !47)
// CHECK:STDOUT: !52 = !{!53, !53, i64 0}
// CHECK:STDOUT: !53 = !{!"std::nullptr_t", !9, i64 0}
// CHECK:STDOUT: !54 = distinct !DISubprogram(name: "ReturnConvertedNullptrDirectly", linkageName: "_CReturnConvertedNullptrDirectly.Main", scope: null, file: !6, line: 31, type: !38, spFlags: DISPFlagDefinition, unit: !5)
// CHECK:STDOUT: !55 = !DILocation(line: 32, column: 10, scope: !54)
// CHECK:STDOUT: !56 = !DILocation(line: 32, column: 3, scope: !54)
// CHECK:STDOUT: !57 = distinct !DISubprogram(name: "ConvertNullptrConstant", linkageName: "_CConvertNullptrConstant.Main", scope: null, file: !6, line: 35, type: !38, spFlags: DISPFlagDefinition, unit: !5)
// CHECK:STDOUT: !58 = !DILocation(line: 36, column: 3, scope: !57)
// CHECK:STDOUT: !59 = distinct !DISubprogram(name: "Convert", linkageName: "_CConvert.NullptrT.CppCompat.Core:ImplicitAs.269b9b75d033aabb.Core.84588f41d61dafba", scope: null, file: !60, line: 51, type: !61, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !63)
// CHECK:STDOUT: !60 = !DIFile(filename: "{{.*}}/prelude/types/cpp/nullptr.carbon", directory: "")
// CHECK:STDOUT: !61 = !DISubroutineType(types: !62)
// CHECK:STDOUT: !62 = !{!25, !25}
// CHECK:STDOUT: !63 = !{!64}
// CHECK:STDOUT: !64 = !DILocalVariable(arg: 1, scope: !59, type: !25)
// CHECK:STDOUT: !65 = !DILocation(line: 52, column: 14, scope: !59)
// CHECK:STDOUT: !66 = !DILocation(line: 52, column: 7, scope: !59)
// CHECK:STDOUT: !67 = distinct !DISubprogram(name: "None", linkageName: "_CNone.Optional.Core.a636f8d928e21310", scope: null, file: !68, line: 30, type: !38, spFlags: DISPFlagDefinition, unit: !5)
// CHECK:STDOUT: !68 = !DIFile(filename: "{{.*}}/prelude/types/optional.carbon", directory: "")
// CHECK:STDOUT: !69 = !DILocation(line: 31, column: 5, scope: !67)
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