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carbon-lang/toolchain/lower/testdata/function/call/form.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/function/call/form.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/function/call/form.carbon
// --- ref_form_param.carbon
library "[[@TEST_NAME]]";
fn F(x:? form(ref i32));
fn G() {
var y: i32 = 0;
F(ref y);
}
// --- var_form_param.carbon
library "[[@TEST_NAME]]";
fn F(x:? form(var i32));
fn G() {
F(0);
}
// --- val_form_param.carbon
library "[[@TEST_NAME]]";
fn F(x:? form(val i32));
fn G() {
F(0);
}
// --- ref_return_form.carbon
library "[[@TEST_NAME]]";
fn F() ->? form(ref i32);
fn G() {
let unused ref x: i32 = F();
}
// --- var_return_form.carbon
library "[[@TEST_NAME]]";
fn F() ->? form(var i32);
fn G() {
let unused var x: i32 = F();
}
// --- val_return_form.carbon
library "[[@TEST_NAME]]";
fn F() ->? form(val i32);
fn G() {
let unused x: i32 = F();
}
// CHECK:STDOUT: ; ModuleID = 'ref_form_param.carbon'
// CHECK:STDOUT: source_filename = "ref_form_param.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CF.Main(ptr)
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CG.Main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %y.var = alloca i32, align 4, !dbg !7
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %y.var), !dbg !7
// CHECK:STDOUT: store i32 0, ptr %y.var, align 4, !dbg !7
// CHECK:STDOUT: call void @_CF.Main(ptr %y.var), !dbg !8
// CHECK:STDOUT: call void @"_COp.94e3ca86614aba5d:core.Destroy.Core"(ptr %y.var), !dbg !7
// CHECK:STDOUT: ret void, !dbg !9
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.94e3ca86614aba5d:core.Destroy.Core"(ptr %self) #0 !dbg !10 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !16
// 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)) #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: "ref_form_param.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main", scope: null, file: !3, line: 5, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{null}
// CHECK:STDOUT: !7 = !DILocation(line: 6, column: 3, scope: !4)
// CHECK:STDOUT: !8 = !DILocation(line: 7, column: 3, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 5, column: 1, scope: !4)
// CHECK:STDOUT: !10 = distinct !DISubprogram(name: "Op", linkageName: "_COp.94e3ca86614aba5d:core.Destroy.Core", scope: null, file: !3, line: 6, type: !11, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !14)
// CHECK:STDOUT: !11 = !DISubroutineType(types: !12)
// CHECK:STDOUT: !12 = !{null, !13}
// CHECK:STDOUT: !13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !14 = !{!15}
// CHECK:STDOUT: !15 = !DILocalVariable(arg: 1, scope: !10, type: !13)
// CHECK:STDOUT: !16 = !DILocation(line: 6, column: 3, scope: !10)
// CHECK:STDOUT: ; ModuleID = 'var_form_param.carbon'
// CHECK:STDOUT: source_filename = "var_form_param.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CF.Main(ptr)
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CG.Main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %x.var = alloca i32, align 4, !dbg !7
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %x.var), !dbg !7
// CHECK:STDOUT: store i32 0, ptr %x.var, align 4, !dbg !7
// CHECK:STDOUT: call void @_CF.Main(ptr %x.var), !dbg !8
// CHECK:STDOUT: call void @"_COp.94e3ca86614aba5d:core.Destroy.Core"(ptr %x.var), !dbg !7
// CHECK:STDOUT: ret void, !dbg !9
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.94e3ca86614aba5d:core.Destroy.Core"(ptr %self) #0 !dbg !10 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !16
// 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)) #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: "var_form_param.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main", scope: null, file: !3, line: 5, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{null}
// CHECK:STDOUT: !7 = !DILocation(line: 3, column: 6, scope: !4)
// CHECK:STDOUT: !8 = !DILocation(line: 6, column: 3, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 5, column: 1, scope: !4)
// CHECK:STDOUT: !10 = distinct !DISubprogram(name: "Op", linkageName: "_COp.94e3ca86614aba5d:core.Destroy.Core", scope: null, file: !3, line: 3, type: !11, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !14)
// CHECK:STDOUT: !11 = !DISubroutineType(types: !12)
// CHECK:STDOUT: !12 = !{null, !13}
// CHECK:STDOUT: !13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !14 = !{!15}
// CHECK:STDOUT: !15 = !DILocalVariable(arg: 1, scope: !10, type: !13)
// CHECK:STDOUT: !16 = !DILocation(line: 3, column: 6, scope: !10)
// CHECK:STDOUT: ; ModuleID = 'val_form_param.carbon'
// CHECK:STDOUT: source_filename = "val_form_param.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CF.Main(i32)
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CG.Main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_CF.Main(i32 0), !dbg !7
// CHECK:STDOUT: ret void, !dbg !8
// 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: "val_form_param.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main", scope: null, file: !3, line: 5, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{null}
// CHECK:STDOUT: !7 = !DILocation(line: 6, column: 3, scope: !4)
// CHECK:STDOUT: !8 = !DILocation(line: 5, column: 1, scope: !4)
// CHECK:STDOUT: ; ModuleID = 'ref_return_form.carbon'
// CHECK:STDOUT: source_filename = "ref_return_form.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: declare ptr @_CF.Main()
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CG.Main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %F.call = call ptr @_CF.Main(), !dbg !7
// CHECK:STDOUT: ret void, !dbg !8
// 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: "ref_return_form.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main", scope: null, file: !3, line: 5, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{null}
// CHECK:STDOUT: !7 = !DILocation(line: 6, column: 27, scope: !4)
// CHECK:STDOUT: !8 = !DILocation(line: 5, column: 1, scope: !4)
// CHECK:STDOUT: ; ModuleID = 'var_return_form.carbon'
// CHECK:STDOUT: source_filename = "var_return_form.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: declare i32 @_CF.Main()
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CG.Main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %x.var = alloca i32, align 4, !dbg !7
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %x.var), !dbg !7
// CHECK:STDOUT: %F.call = call i32 @_CF.Main(), !dbg !8
// CHECK:STDOUT: store i32 %F.call, ptr %x.var, align 4, !dbg !7
// CHECK:STDOUT: call void @"_COp.94e3ca86614aba5d:core.Destroy.Core"(ptr %x.var), !dbg !7
// CHECK:STDOUT: ret void, !dbg !9
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.94e3ca86614aba5d:core.Destroy.Core"(ptr %self) #0 !dbg !10 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !16
// 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)) #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: "var_return_form.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main", scope: null, file: !3, line: 5, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{null}
// CHECK:STDOUT: !7 = !DILocation(line: 6, column: 14, scope: !4)
// CHECK:STDOUT: !8 = !DILocation(line: 6, column: 27, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 5, column: 1, scope: !4)
// CHECK:STDOUT: !10 = distinct !DISubprogram(name: "Op", linkageName: "_COp.94e3ca86614aba5d:core.Destroy.Core", scope: null, file: !3, line: 6, type: !11, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !14)
// CHECK:STDOUT: !11 = !DISubroutineType(types: !12)
// CHECK:STDOUT: !12 = !{null, !13}
// CHECK:STDOUT: !13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !14 = !{!15}
// CHECK:STDOUT: !15 = !DILocalVariable(arg: 1, scope: !10, type: !13)
// CHECK:STDOUT: !16 = !DILocation(line: 6, column: 14, scope: !10)
// CHECK:STDOUT: ; ModuleID = 'val_return_form.carbon'
// CHECK:STDOUT: source_filename = "val_return_form.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: declare i32 @_CF.Main()
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CG.Main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %F.call = call i32 @_CF.Main(), !dbg !7
// CHECK:STDOUT: ret void, !dbg !8
// 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: "val_return_form.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main", scope: null, file: !3, line: 5, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{null}
// CHECK:STDOUT: !7 = !DILocation(line: 6, column: 23, scope: !4)
// CHECK:STDOUT: !8 = !DILocation(line: 5, column: 1, scope: !4)
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