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return 0 from Run when it doesn't specify a return value (#7180)

Browse Source 
https://carbon.compiler-explorer.com/z/88K9Kh5Wo shows the program
exiting with a garbage value copied from uninitialized memory.

This PR modifies `lower` to detect if the function lowered is the
entry point and doesn't specify a return type. If so, it emits
different LLVM IR to return int32 0, and modifies the lowered
function signature to match the int32 return type.
This commit is contained in:
Lucile Rose Nihlen
2026-05-08 19:00:47 +00:00
committed by GitHub
parent 3e36f7d43c
commit bc1ae703c3
22 changed files with 618 additions and 444 deletions
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toolchain/lower/testdata/array/assign_return_value.carbon
Vendored
+28 -28
View File
@@ -31,28 +31,28 @@ fn Run() {
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @main() #0 !dbg !10 {
// CHECK:STDOUT: define i32 @main() #0 !dbg !10 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %_.var = alloca [2 x i32], align 4, !dbg !13
// CHECK:STDOUT: %.loc16_28.1.temp = alloca { i32, i32 }, align 8, !dbg !14
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %_.var), !dbg !13
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc16_28.1.temp), !dbg !14
// CHECK:STDOUT: call void @_CF.Main(ptr %.loc16_28.1.temp), !dbg !14
// CHECK:STDOUT: %tuple.elem0.tuple.elem = getelementptr inbounds nuw { i32, i32 }, ptr %.loc16_28.1.temp, i32 0, i32 0, !dbg !14
// CHECK:STDOUT: %.loc16_28.3 = load i32, ptr %tuple.elem0.tuple.elem, align 4, !dbg !14
// CHECK:STDOUT: %.loc16_28.4.array.index = getelementptr inbounds [2 x i32], ptr %_.var, i32 0, i64 0, !dbg !14
// CHECK:STDOUT: store i32 %.loc16_28.3, ptr %.loc16_28.4.array.index, align 4, !dbg !14
// CHECK:STDOUT: %tuple.elem1.tuple.elem = getelementptr inbounds nuw { i32, i32 }, ptr %.loc16_28.1.temp, i32 0, i32 1, !dbg !14
// CHECK:STDOUT: %.loc16_28.6 = load i32, ptr %tuple.elem1.tuple.elem, align 4, !dbg !14
// CHECK:STDOUT: %.loc16_28.7.array.index = getelementptr inbounds [2 x i32], ptr %_.var, i32 0, i64 1, !dbg !14
// CHECK:STDOUT: store i32 %.loc16_28.6, ptr %.loc16_28.7.array.index, align 4, !dbg !14
// CHECK:STDOUT: call void @"_COp.8e354c83fe88ab86:core.Destroy.Core"(ptr %.loc16_28.1.temp), !dbg !14
// CHECK:STDOUT: call void @"_COp.f53f00a5f9e218d2:core.Destroy.Core"(ptr %_.var), !dbg !13
// CHECK:STDOUT: ret void, !dbg !15
// CHECK:STDOUT: %_.var = alloca [2 x i32], align 4, !dbg !14
// CHECK:STDOUT: %.loc16_28.1.temp = alloca { i32, i32 }, align 8, !dbg !15
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %_.var), !dbg !14
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc16_28.1.temp), !dbg !15
// CHECK:STDOUT: call void @_CF.Main(ptr %.loc16_28.1.temp), !dbg !15
// CHECK:STDOUT: %tuple.elem0.tuple.elem = getelementptr inbounds nuw { i32, i32 }, ptr %.loc16_28.1.temp, i32 0, i32 0, !dbg !15
// CHECK:STDOUT: %.loc16_28.3 = load i32, ptr %tuple.elem0.tuple.elem, align 4, !dbg !15
// CHECK:STDOUT: %.loc16_28.4.array.index = getelementptr inbounds [2 x i32], ptr %_.var, i32 0, i64 0, !dbg !15
// CHECK:STDOUT: store i32 %.loc16_28.3, ptr %.loc16_28.4.array.index, align 4, !dbg !15
// CHECK:STDOUT: %tuple.elem1.tuple.elem = getelementptr inbounds nuw { i32, i32 }, ptr %.loc16_28.1.temp, i32 0, i32 1, !dbg !15
// CHECK:STDOUT: %.loc16_28.6 = load i32, ptr %tuple.elem1.tuple.elem, align 4, !dbg !15
// CHECK:STDOUT: %.loc16_28.7.array.index = getelementptr inbounds [2 x i32], ptr %_.var, i32 0, i64 1, !dbg !15
// CHECK:STDOUT: store i32 %.loc16_28.6, ptr %.loc16_28.7.array.index, align 4, !dbg !15
// CHECK:STDOUT: call void @"_COp.8e354c83fe88ab86:core.Destroy.Core"(ptr %.loc16_28.1.temp), !dbg !15
// CHECK:STDOUT: call void @"_COp.f53f00a5f9e218d2:core.Destroy.Core"(ptr %_.var), !dbg !14
// CHECK:STDOUT: ret i32 0, !dbg !16
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.7e389eab4a7e5487:core.Destroy.Core"(ptr %self) #0 !dbg !16 {
// CHECK:STDOUT: define weak_odr void @"_COp.7e389eab4a7e5487:core.Destroy.Core"(ptr %self) #0 !dbg !17 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !22
// CHECK:STDOUT: }
@@ -97,17 +97,17 @@ fn Run() {
// CHECK:STDOUT: !9 = !DILocation(line: 13, column: 24, scope: !4)
// CHECK:STDOUT: !10 = distinct !DISubprogram(name: "Run", linkageName: "main", scope: null, file: !3, line: 15, type: !11, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !11 = !DISubroutineType(types: !12)
// CHECK:STDOUT: !12 = !{null}
// CHECK:STDOUT: !13 = !DILocation(line: 16, column: 3, scope: !10)
// CHECK:STDOUT: !14 = !DILocation(line: 16, column: 26, scope: !10)
// CHECK:STDOUT: !15 = !DILocation(line: 15, column: 1, scope: !10)
// CHECK:STDOUT: !16 = distinct !DISubprogram(name: "Op", linkageName: "_COp.7e389eab4a7e5487:core.Destroy.Core", scope: null, file: !3, line: 16, type: !17, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !20)
// CHECK:STDOUT: !17 = !DISubroutineType(types: !18)
// CHECK:STDOUT: !18 = !{null, !19}
// CHECK:STDOUT: !19 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !12 = !{!13}
// CHECK:STDOUT: !13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !14 = !DILocation(line: 16, column: 3, scope: !10)
// CHECK:STDOUT: !15 = !DILocation(line: 16, column: 26, scope: !10)
// CHECK:STDOUT: !16 = !DILocation(line: 15, column: 1, scope: !10)
// CHECK:STDOUT: !17 = distinct !DISubprogram(name: "Op", linkageName: "_COp.7e389eab4a7e5487:core.Destroy.Core", scope: null, file: !3, line: 16, type: !18, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !20)
// CHECK:STDOUT: !18 = !DISubroutineType(types: !19)
// CHECK:STDOUT: !19 = !{null, !13}
// CHECK:STDOUT: !20 = !{!21}
// CHECK:STDOUT: !21 = !DILocalVariable(arg: 1, scope: !16, type: !19)
// CHECK:STDOUT: !22 = !DILocation(line: 16, column: 26, scope: !16)
// CHECK:STDOUT: !21 = !DILocalVariable(arg: 1, scope: !17, type: !13)
// CHECK:STDOUT: !22 = !DILocation(line: 16, column: 26, scope: !17)
// CHECK:STDOUT: !23 = distinct !DISubprogram(name: "Op", linkageName: "_COp.8e354c83fe88ab86:core.Destroy.Core", scope: null, file: !3, line: 16, type: !24, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !26)
// CHECK:STDOUT: !24 = !DISubroutineType(types: !25)
// CHECK:STDOUT: !25 = !{null, !7}
toolchain/lower/testdata/array/base.carbon
Vendored
+63 -63
View File
@@ -27,55 +27,55 @@ fn Run() {
// CHECK:STDOUT: @tuple.ee6.loc17_3 = internal constant { i32, i32, i32 } { i32 1, i32 2, i32 3 }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @main() #0 !dbg !4 {
// CHECK:STDOUT: define i32 @main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %_.var.loc14 = alloca [1 x i32], align 4, !dbg !7
// CHECK:STDOUT: %_.var.loc15 = alloca [2 x double], align 8, !dbg !8
// CHECK:STDOUT: %_.var.loc16 = alloca [5 x {}], align 8, !dbg !9
// CHECK:STDOUT: %d.var = alloca { i32, i32, i32 }, align 8, !dbg !10
// CHECK:STDOUT: %_.var.loc18 = alloca [3 x i32], align 4, !dbg !11
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %_.var.loc14), !dbg !7
// CHECK:STDOUT: %.loc14_29.3.array.index = getelementptr inbounds [1 x i32], ptr %_.var.loc14, i32 0, i64 0, !dbg !12
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 %_.var.loc14, ptr align 4 @array.237.loc14_3, i64 4, i1 false), !dbg !7
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %_.var.loc15), !dbg !8
// CHECK:STDOUT: %.loc15_37.3.array.index = getelementptr inbounds [2 x double], ptr %_.var.loc15, i32 0, i64 0, !dbg !13
// CHECK:STDOUT: %.loc15_37.6.array.index = getelementptr inbounds [2 x double], ptr %_.var.loc15, i32 0, i64 1, !dbg !13
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 8 %_.var.loc15, ptr align 8 @array.b91.loc15_3, i64 16, i1 false), !dbg !8
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %_.var.loc16), !dbg !9
// CHECK:STDOUT: %.loc16_45.2.array.index = getelementptr inbounds [5 x {}], ptr %_.var.loc16, i32 0, i64 0, !dbg !14
// CHECK:STDOUT: %.loc16_45.5.array.index = getelementptr inbounds [5 x {}], ptr %_.var.loc16, i32 0, i64 1, !dbg !14
// CHECK:STDOUT: %.loc16_45.8.array.index = getelementptr inbounds [5 x {}], ptr %_.var.loc16, i32 0, i64 2, !dbg !14
// CHECK:STDOUT: %.loc16_45.11.array.index = getelementptr inbounds [5 x {}], ptr %_.var.loc16, i32 0, i64 3, !dbg !14
// CHECK:STDOUT: %.loc16_45.14.array.index = getelementptr inbounds [5 x {}], ptr %_.var.loc16, i32 0, i64 4, !dbg !14
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %_.var.loc16, ptr align 1 @array.1cb.loc16_3, i64 0, i1 false), !dbg !9
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %d.var), !dbg !10
// CHECK:STDOUT: %tuple.elem0.loc17.tuple.elem = getelementptr inbounds nuw { i32, i32, i32 }, ptr %d.var, i32 0, i32 0, !dbg !15
// CHECK:STDOUT: %tuple.elem1.loc17.tuple.elem = getelementptr inbounds nuw { i32, i32, i32 }, ptr %d.var, i32 0, i32 1, !dbg !15
// CHECK:STDOUT: %tuple.elem2.loc17.tuple.elem = getelementptr inbounds nuw { i32, i32, i32 }, ptr %d.var, i32 0, i32 2, !dbg !15
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 %d.var, ptr align 4 @tuple.ee6.loc17_3, i64 12, i1 false), !dbg !10
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %_.var.loc18), !dbg !11
// CHECK:STDOUT: %tuple.elem0.loc18.tuple.elem = getelementptr inbounds nuw { i32, i32, i32 }, ptr %d.var, i32 0, i32 0, !dbg !16
// CHECK:STDOUT: %.loc18_26.1 = load i32, ptr %tuple.elem0.loc18.tuple.elem, align 4, !dbg !16
// CHECK:STDOUT: %.loc18_26.2.array.index = getelementptr inbounds [3 x i32], ptr %_.var.loc18, i32 0, i64 0, !dbg !16
// CHECK:STDOUT: store i32 %.loc18_26.1, ptr %.loc18_26.2.array.index, align 4, !dbg !16
// CHECK:STDOUT: %tuple.elem1.loc18.tuple.elem = getelementptr inbounds nuw { i32, i32, i32 }, ptr %d.var, i32 0, i32 1, !dbg !16
// CHECK:STDOUT: %.loc18_26.4 = load i32, ptr %tuple.elem1.loc18.tuple.elem, align 4, !dbg !16
// CHECK:STDOUT: %.loc18_26.5.array.index = getelementptr inbounds [3 x i32], ptr %_.var.loc18, i32 0, i64 1, !dbg !16
// CHECK:STDOUT: store i32 %.loc18_26.4, ptr %.loc18_26.5.array.index, align 4, !dbg !16
// CHECK:STDOUT: %tuple.elem2.loc18.tuple.elem = getelementptr inbounds nuw { i32, i32, i32 }, ptr %d.var, i32 0, i32 2, !dbg !16
// CHECK:STDOUT: %.loc18_26.7 = load i32, ptr %tuple.elem2.loc18.tuple.elem, align 4, !dbg !16
// CHECK:STDOUT: %.loc18_26.8.array.index = getelementptr inbounds [3 x i32], ptr %_.var.loc18, i32 0, i64 2, !dbg !16
// CHECK:STDOUT: store i32 %.loc18_26.7, ptr %.loc18_26.8.array.index, align 4, !dbg !16
// CHECK:STDOUT: call void @"_COp.bfd302cd235977c4:core.Destroy.Core"(ptr %_.var.loc18), !dbg !11
// CHECK:STDOUT: call void @"_COp.819e9e1e390140e8:core.Destroy.Core"(ptr %d.var), !dbg !10
// CHECK:STDOUT: call void @"_COp.fd2b1e64e898d326:core.Destroy.Core"(ptr %_.var.loc16), !dbg !9
// CHECK:STDOUT: call void @"_COp.aca92e88ce95a52e:core.Destroy.Core"(ptr %_.var.loc15), !dbg !8
// CHECK:STDOUT: call void @"_COp.d26f73ac8e1728e0:core.Destroy.Core"(ptr %_.var.loc14), !dbg !7
// CHECK:STDOUT: ret void, !dbg !17
// CHECK:STDOUT: %_.var.loc14 = alloca [1 x i32], align 4, !dbg !8
// CHECK:STDOUT: %_.var.loc15 = alloca [2 x double], align 8, !dbg !9
// CHECK:STDOUT: %_.var.loc16 = alloca [5 x {}], align 8, !dbg !10
// CHECK:STDOUT: %d.var = alloca { i32, i32, i32 }, align 8, !dbg !11
// CHECK:STDOUT: %_.var.loc18 = alloca [3 x i32], align 4, !dbg !12
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %_.var.loc14), !dbg !8
// CHECK:STDOUT: %.loc14_29.3.array.index = getelementptr inbounds [1 x i32], ptr %_.var.loc14, i32 0, i64 0, !dbg !13
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 %_.var.loc14, ptr align 4 @array.237.loc14_3, i64 4, i1 false), !dbg !8
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %_.var.loc15), !dbg !9
// CHECK:STDOUT: %.loc15_37.3.array.index = getelementptr inbounds [2 x double], ptr %_.var.loc15, i32 0, i64 0, !dbg !14
// CHECK:STDOUT: %.loc15_37.6.array.index = getelementptr inbounds [2 x double], ptr %_.var.loc15, i32 0, i64 1, !dbg !14
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 8 %_.var.loc15, ptr align 8 @array.b91.loc15_3, i64 16, i1 false), !dbg !9
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %_.var.loc16), !dbg !10
// CHECK:STDOUT: %.loc16_45.2.array.index = getelementptr inbounds [5 x {}], ptr %_.var.loc16, i32 0, i64 0, !dbg !15
// CHECK:STDOUT: %.loc16_45.5.array.index = getelementptr inbounds [5 x {}], ptr %_.var.loc16, i32 0, i64 1, !dbg !15
// CHECK:STDOUT: %.loc16_45.8.array.index = getelementptr inbounds [5 x {}], ptr %_.var.loc16, i32 0, i64 2, !dbg !15
// CHECK:STDOUT: %.loc16_45.11.array.index = getelementptr inbounds [5 x {}], ptr %_.var.loc16, i32 0, i64 3, !dbg !15
// CHECK:STDOUT: %.loc16_45.14.array.index = getelementptr inbounds [5 x {}], ptr %_.var.loc16, i32 0, i64 4, !dbg !15
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %_.var.loc16, ptr align 1 @array.1cb.loc16_3, i64 0, i1 false), !dbg !10
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %d.var), !dbg !11
// CHECK:STDOUT: %tuple.elem0.loc17.tuple.elem = getelementptr inbounds nuw { i32, i32, i32 }, ptr %d.var, i32 0, i32 0, !dbg !16
// CHECK:STDOUT: %tuple.elem1.loc17.tuple.elem = getelementptr inbounds nuw { i32, i32, i32 }, ptr %d.var, i32 0, i32 1, !dbg !16
// CHECK:STDOUT: %tuple.elem2.loc17.tuple.elem = getelementptr inbounds nuw { i32, i32, i32 }, ptr %d.var, i32 0, i32 2, !dbg !16
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 %d.var, ptr align 4 @tuple.ee6.loc17_3, i64 12, i1 false), !dbg !11
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %_.var.loc18), !dbg !12
// CHECK:STDOUT: %tuple.elem0.loc18.tuple.elem = getelementptr inbounds nuw { i32, i32, i32 }, ptr %d.var, i32 0, i32 0, !dbg !17
// CHECK:STDOUT: %.loc18_26.1 = load i32, ptr %tuple.elem0.loc18.tuple.elem, align 4, !dbg !17
// CHECK:STDOUT: %.loc18_26.2.array.index = getelementptr inbounds [3 x i32], ptr %_.var.loc18, i32 0, i64 0, !dbg !17
// CHECK:STDOUT: store i32 %.loc18_26.1, ptr %.loc18_26.2.array.index, align 4, !dbg !17
// CHECK:STDOUT: %tuple.elem1.loc18.tuple.elem = getelementptr inbounds nuw { i32, i32, i32 }, ptr %d.var, i32 0, i32 1, !dbg !17
// CHECK:STDOUT: %.loc18_26.4 = load i32, ptr %tuple.elem1.loc18.tuple.elem, align 4, !dbg !17
// CHECK:STDOUT: %.loc18_26.5.array.index = getelementptr inbounds [3 x i32], ptr %_.var.loc18, i32 0, i64 1, !dbg !17
// CHECK:STDOUT: store i32 %.loc18_26.4, ptr %.loc18_26.5.array.index, align 4, !dbg !17
// CHECK:STDOUT: %tuple.elem2.loc18.tuple.elem = getelementptr inbounds nuw { i32, i32, i32 }, ptr %d.var, i32 0, i32 2, !dbg !17
// CHECK:STDOUT: %.loc18_26.7 = load i32, ptr %tuple.elem2.loc18.tuple.elem, align 4, !dbg !17
// CHECK:STDOUT: %.loc18_26.8.array.index = getelementptr inbounds [3 x i32], ptr %_.var.loc18, i32 0, i64 2, !dbg !17
// CHECK:STDOUT: store i32 %.loc18_26.7, ptr %.loc18_26.8.array.index, align 4, !dbg !17
// CHECK:STDOUT: call void @"_COp.bfd302cd235977c4:core.Destroy.Core"(ptr %_.var.loc18), !dbg !12
// CHECK:STDOUT: call void @"_COp.819e9e1e390140e8:core.Destroy.Core"(ptr %d.var), !dbg !11
// CHECK:STDOUT: call void @"_COp.fd2b1e64e898d326:core.Destroy.Core"(ptr %_.var.loc16), !dbg !10
// CHECK:STDOUT: call void @"_COp.aca92e88ce95a52e:core.Destroy.Core"(ptr %_.var.loc15), !dbg !9
// CHECK:STDOUT: call void @"_COp.d26f73ac8e1728e0:core.Destroy.Core"(ptr %_.var.loc14), !dbg !8
// CHECK:STDOUT: ret i32 0, !dbg !18
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.7e389eab4a7e5487:core.Destroy.Core"(ptr %self) #0 !dbg !18 {
// CHECK:STDOUT: define weak_odr void @"_COp.7e389eab4a7e5487:core.Destroy.Core"(ptr %self) #0 !dbg !19 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !24
// CHECK:STDOUT: }
@@ -139,25 +139,25 @@ fn Run() {
// CHECK:STDOUT: !3 = !DIFile(filename: "base.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "Run", linkageName: "main", scope: null, file: !3, line: 13, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{null}
// CHECK:STDOUT: !7 = !DILocation(line: 14, column: 3, scope: !4)
// CHECK:STDOUT: !8 = !DILocation(line: 15, column: 3, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 16, column: 3, scope: !4)
// CHECK:STDOUT: !10 = !DILocation(line: 17, column: 3, scope: !4)
// CHECK:STDOUT: !11 = !DILocation(line: 18, column: 3, scope: !4)
// CHECK:STDOUT: !12 = !DILocation(line: 14, column: 26, scope: !4)
// CHECK:STDOUT: !13 = !DILocation(line: 15, column: 26, scope: !4)
// CHECK:STDOUT: !14 = !DILocation(line: 16, column: 25, scope: !4)
// CHECK:STDOUT: !15 = !DILocation(line: 17, column: 28, scope: !4)
// CHECK:STDOUT: !16 = !DILocation(line: 18, column: 26, scope: !4)
// CHECK:STDOUT: !17 = !DILocation(line: 13, column: 1, scope: !4)
// CHECK:STDOUT: !18 = distinct !DISubprogram(name: "Op", linkageName: "_COp.7e389eab4a7e5487:core.Destroy.Core", scope: null, file: !3, line: 18, type: !19, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !22)
// CHECK:STDOUT: !19 = !DISubroutineType(types: !20)
// CHECK:STDOUT: !20 = !{null, !21}
// CHECK:STDOUT: !21 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !6 = !{!7}
// CHECK:STDOUT: !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !8 = !DILocation(line: 14, column: 3, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 15, column: 3, scope: !4)
// CHECK:STDOUT: !10 = !DILocation(line: 16, column: 3, scope: !4)
// CHECK:STDOUT: !11 = !DILocation(line: 17, column: 3, scope: !4)
// CHECK:STDOUT: !12 = !DILocation(line: 18, column: 3, scope: !4)
// CHECK:STDOUT: !13 = !DILocation(line: 14, column: 26, scope: !4)
// CHECK:STDOUT: !14 = !DILocation(line: 15, column: 26, scope: !4)
// CHECK:STDOUT: !15 = !DILocation(line: 16, column: 25, scope: !4)
// CHECK:STDOUT: !16 = !DILocation(line: 17, column: 28, scope: !4)
// CHECK:STDOUT: !17 = !DILocation(line: 18, column: 26, scope: !4)
// CHECK:STDOUT: !18 = !DILocation(line: 13, column: 1, scope: !4)
// CHECK:STDOUT: !19 = distinct !DISubprogram(name: "Op", linkageName: "_COp.7e389eab4a7e5487:core.Destroy.Core", scope: null, file: !3, line: 18, type: !20, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !22)
// CHECK:STDOUT: !20 = !DISubroutineType(types: !21)
// CHECK:STDOUT: !21 = !{null, !7}
// CHECK:STDOUT: !22 = !{!23}
// CHECK:STDOUT: !23 = !DILocalVariable(arg: 1, scope: !18, type: !21)
// CHECK:STDOUT: !24 = !DILocation(line: 18, column: 3, scope: !18)
// CHECK:STDOUT: !23 = !DILocalVariable(arg: 1, scope: !19, type: !7)
// CHECK:STDOUT: !24 = !DILocation(line: 18, column: 3, scope: !19)
// CHECK:STDOUT: !25 = distinct !DISubprogram(name: "Op", linkageName: "_COp.bfd302cd235977c4:core.Destroy.Core", scope: null, file: !3, line: 18, type: !26, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !29)
// CHECK:STDOUT: !26 = !DISubroutineType(types: !27)
// CHECK:STDOUT: !27 = !{null, !28}