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carbon-lang/toolchain/lower/testdata/class/adapt.carbon
T
Richard Smith 05cc09daca Fix cross-package signature mismatches. (#7232) 
Fixes link failures when referencing a symbol involving a fingerprint
from a different package.

Previously we included the `Namespace`'s `import_id` as part of its
fingerprint, which caused local and imported namespaces to get different
fingerprints. We now store the `import_id` on the `NameScope` instead of
on the `Namespace` inst to avoid this problem.

Also, when we reach a package-level `NameScopeId`, consistently
fingerprint it as a (package name, library name) pair. Previously the
fingerprinting depended on whether it was imported or not, as an
imported `NameScopeId` had a parent scope (the current package). We need
to include the library name here so that private entities with the same
name in different libraries have different fingerprints.
2026-05-21 00:02:29 +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/int.carbon
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/class/adapt.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/class/adapt.carbon
// --- adapt_class.carbon
library "[[@TEST_NAME]]";
class PairOfInts {
var a: i32;
var b: i32;
fn Make() -> Self {
return {.a = 1, .b = 2};
}
}
class PairAdapter {
adapt PairOfInts;
fn Make() -> Self {
return PairOfInts.Make() as Self;
}
fn GetB[self: Self]() -> i32 {
let pi: PairOfInts = self as PairOfInts;
return pi.b;
}
}
fn Use() -> i32 {
var pa: PairAdapter = PairAdapter.Make();
return pa.GetB();
}
// --- adapt_int.carbon
library "[[@TEST_NAME]]";
class Int {
adapt i32;
impl as Core.Copy {
fn Op[self: Self]() -> Self { return (self as i32).(Core.Copy.Op)() as Int; }
}
}
fn DoStuff(a: Int) -> Int {
return a;
}
// CHECK:STDOUT: ; ModuleID = 'adapt_class.carbon'
// CHECK:STDOUT: source_filename = "adapt_class.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: @PairOfInts.val.loc9_28 = internal constant { i32, i32 } { i32 1, i32 2 }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CMake.PairOfInts.Main(ptr sret({ i32, i32 }) %return) #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc9_27.3.a = getelementptr inbounds nuw { i32, i32 }, ptr %return, i32 0, i32 0, !dbg !8
// CHECK:STDOUT: %.loc9_27.6.b = getelementptr inbounds nuw { i32, i32 }, ptr %return, i32 0, i32 1, !dbg !8
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 %return, ptr align 4 @PairOfInts.val.loc9_28, i64 8, i1 false), !dbg !9
// CHECK:STDOUT: ret void, !dbg !9
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CMake.PairAdapter.Main(ptr sret({ i32, i32 }) %return) #0 !dbg !10 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_CMake.PairOfInts.Main(ptr %return), !dbg !11
// CHECK:STDOUT: ret void, !dbg !12
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @_CGetB.PairAdapter.Main(ptr %self) #0 !dbg !13 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc22_14.1.b = getelementptr inbounds nuw { i32, i32 }, ptr %self, i32 0, i32 1, !dbg !19
// CHECK:STDOUT: %.loc22_14.2 = load i32, ptr %.loc22_14.1.b, align 4, !dbg !19
// CHECK:STDOUT: ret i32 %.loc22_14.2, !dbg !20
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @_CUse.Main() #0 !dbg !21 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %pa.var = alloca { i32, i32 }, align 8, !dbg !24
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %pa.var), !dbg !24
// CHECK:STDOUT: call void @_CMake.PairAdapter.Main(ptr %pa.var), !dbg !25
// CHECK:STDOUT: %PairAdapter.GetB.call = call i32 @_CGetB.PairAdapter.Main(ptr %pa.var), !dbg !26
// CHECK:STDOUT: call void @"_COp.0425d770117f5d8d:core.Destroy.Core"(ptr %pa.var), !dbg !24
// CHECK:STDOUT: ret i32 %PairAdapter.GetB.call, !dbg !27
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.94e3ca86614aba5d:core.Destroy.Core"(ptr %self) #0 !dbg !28 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !33
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.57e275a610bca340:core.Destroy.Core"(ptr %self) #0 !dbg !34 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !39
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.0425d770117f5d8d:core.Destroy.Core"(ptr %self) #0 !dbg !40 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !43
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.memcpy.p0.p0.i64(ptr noalias writeonly captures(none), ptr noalias readonly captures(none), i64, i1 immarg) #1
// 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)) #1
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
// CHECK:STDOUT: !llvm.dbg.cu = !{!2}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "adapt_class.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "Make", linkageName: "_CMake.PairOfInts.Main", scope: null, file: !3, line: 8, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{!7}
// CHECK:STDOUT: !7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !8 = !DILocation(line: 9, column: 12, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 9, column: 5, scope: !4)
// CHECK:STDOUT: !10 = distinct !DISubprogram(name: "Make", linkageName: "_CMake.PairAdapter.Main", scope: null, file: !3, line: 16, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !11 = !DILocation(line: 17, column: 12, scope: !10)
// CHECK:STDOUT: !12 = !DILocation(line: 17, column: 5, scope: !10)
// CHECK:STDOUT: !13 = distinct !DISubprogram(name: "GetB", linkageName: "_CGetB.PairAdapter.Main", scope: null, file: !3, line: 20, type: !14, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !17)
// CHECK:STDOUT: !14 = !DISubroutineType(types: !15)
// CHECK:STDOUT: !15 = !{!16, !7}
// CHECK:STDOUT: !16 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !17 = !{!18}
// CHECK:STDOUT: !18 = !DILocalVariable(arg: 1, scope: !13, type: !7)
// CHECK:STDOUT: !19 = !DILocation(line: 22, column: 12, scope: !13)
// CHECK:STDOUT: !20 = !DILocation(line: 22, column: 5, scope: !13)
// CHECK:STDOUT: !21 = distinct !DISubprogram(name: "Use", linkageName: "_CUse.Main", scope: null, file: !3, line: 26, type: !22, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !22 = !DISubroutineType(types: !23)
// CHECK:STDOUT: !23 = !{!16}
// CHECK:STDOUT: !24 = !DILocation(line: 27, column: 3, scope: !21)
// CHECK:STDOUT: !25 = !DILocation(line: 27, column: 25, scope: !21)
// CHECK:STDOUT: !26 = !DILocation(line: 28, column: 10, scope: !21)
// CHECK:STDOUT: !27 = !DILocation(line: 28, column: 3, scope: !21)
// CHECK:STDOUT: !28 = distinct !DISubprogram(name: "Op", linkageName: "_COp.94e3ca86614aba5d:core.Destroy.Core", scope: null, file: !3, line: 27, type: !29, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !31)
// CHECK:STDOUT: !29 = !DISubroutineType(types: !30)
// CHECK:STDOUT: !30 = !{null, !16}
// CHECK:STDOUT: !31 = !{!32}
// CHECK:STDOUT: !32 = !DILocalVariable(arg: 1, scope: !28, type: !16)
// CHECK:STDOUT: !33 = !DILocation(line: 27, column: 3, scope: !28)
// CHECK:STDOUT: !34 = distinct !DISubprogram(name: "Op", linkageName: "_COp.57e275a610bca340:core.Destroy.Core", scope: null, file: !3, line: 27, type: !35, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !37)
// CHECK:STDOUT: !35 = !DISubroutineType(types: !36)
// CHECK:STDOUT: !36 = !{null, !7}
// CHECK:STDOUT: !37 = !{!38}
// CHECK:STDOUT: !38 = !DILocalVariable(arg: 1, scope: !34, type: !7)
// CHECK:STDOUT: !39 = !DILocation(line: 27, column: 3, scope: !34)
// CHECK:STDOUT: !40 = distinct !DISubprogram(name: "Op", linkageName: "_COp.0425d770117f5d8d:core.Destroy.Core", scope: null, file: !3, line: 27, type: !35, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !41)
// CHECK:STDOUT: !41 = !{!42}
// CHECK:STDOUT: !42 = !DILocalVariable(arg: 1, scope: !40, type: !7)
// CHECK:STDOUT: !43 = !DILocation(line: 27, column: 3, scope: !40)
// CHECK:STDOUT: ; ModuleID = 'adapt_int.carbon'
// CHECK:STDOUT: source_filename = "adapt_int.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @"_COp.Int.Main:Copy.Core"(i32 %self) #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret i32 %self, !dbg !10
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @_CDoStuff.Main(i32 %a) #0 !dbg !11 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %Int.as.Copy.impl.Op.call = call i32 @"_COp.Int.Main:Copy.Core"(i32 %a), !dbg !14
// CHECK:STDOUT: ret i32 %Int.as.Copy.impl.Op.call, !dbg !15
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
// CHECK:STDOUT: !llvm.dbg.cu = !{!2}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "adapt_int.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "Op", linkageName: "_COp.Int.Main:Copy.Core", scope: null, file: !3, line: 8, type: !5, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !8)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{!7, !7}
// CHECK:STDOUT: !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !8 = !{!9}
// CHECK:STDOUT: !9 = !DILocalVariable(arg: 1, scope: !4, type: !7)
// CHECK:STDOUT: !10 = !DILocation(line: 8, column: 35, scope: !4)
// CHECK:STDOUT: !11 = distinct !DISubprogram(name: "DoStuff", linkageName: "_CDoStuff.Main", scope: null, file: !3, line: 12, type: !5, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !12)
// CHECK:STDOUT: !12 = !{!13}
// CHECK:STDOUT: !13 = !DILocalVariable(arg: 1, scope: !11, type: !7)
// CHECK:STDOUT: !14 = !DILocation(line: 13, column: 10, scope: !11)
// CHECK:STDOUT: !15 = !DILocation(line: 13, column: 3, scope: !11)
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