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carbon-lang/toolchain/check/testdata/interop/cpp/var/import/global.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/destroy.carbon
// EXTRA-ARGS: --dump-sem-ir-ranges=if-present
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/interop/cpp/var/import/global.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interop/cpp/var/import/global.carbon
// ============================================================================
// Global scope
// ============================================================================
// --- global_scope.h
class C {};
C global;
C* _Nonnull global_ptr = &global;
C& global_ref = global;
// --- import_global_scope.carbon
library "[[@TEST_NAME]]";
import Cpp library "global_scope.h";
fn MyF() {
let unused local: Cpp.C = Cpp.global;
let unused local_ptr: Cpp.C* = Cpp.global_ptr;
let unused local_ref: Cpp.C* = Cpp.global_ref;
}
// ============================================================================
// Unsupported global type
// ============================================================================
// --- unsupported_type.h
using UnusupportedType = _BitInt(23);
UnusupportedType global;
// --- fail_import_unsupported_type.carbon
library "[[@TEST_NAME]]";
// CHECK:STDERR: fail_import_unsupported_type.carbon:[[@LINE+4]]:10: in file included here [InCppInclude]
// CHECK:STDERR: ./unsupported_type.h:2:7: error: semantics TODO: `Unsupported: Type declaration: UnusupportedType` [SemanticsTodo]
// CHECK:STDERR: using UnusupportedType = _BitInt(23);
// CHECK:STDERR: ^
import Cpp library "unsupported_type.h";
fn MyF() {
// CHECK:STDERR: fail_import_unsupported_type.carbon:[[@LINE+11]]:21: note: in `Cpp` name lookup for `UnusupportedType` [InCppNameLookup]
// CHECK:STDERR: let unused local: Cpp.UnusupportedType = Cpp.global;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
// CHECK:STDERR: fail_import_unsupported_type.carbon:[[@LINE+7]]:44: error: semantics TODO: `Unsupported: var type: UnusupportedType` [SemanticsTodo]
// CHECK:STDERR: let unused local: Cpp.UnusupportedType = Cpp.global;
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR: fail_import_unsupported_type.carbon:[[@LINE+4]]:44: note: in `Cpp` name lookup for `global` [InCppNameLookup]
// CHECK:STDERR: let unused local: Cpp.UnusupportedType = Cpp.global;
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR:
let unused local: Cpp.UnusupportedType = Cpp.global;
}
// CHECK:STDOUT: --- import_global_scope.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %MyF.type: type = fn_type @MyF [concrete]
// CHECK:STDOUT: %MyF: %MyF.type = struct_value () [concrete]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
// CHECK:STDOUT: %pattern_type.bbc: type = pattern_type %C [concrete]
// CHECK:STDOUT: %ptr.0a2: type = ptr_type %C [concrete]
// CHECK:STDOUT: %pattern_type.8fa: type = pattern_type %ptr.0a2 [concrete]
// CHECK:STDOUT: %const: type = const_type %ptr.0a2 [concrete]
// CHECK:STDOUT: %pattern_type.635: type = pattern_type %const [concrete]
// CHECK:STDOUT: %global_ref.var: ref %ptr.0a2 = var imports.%global_ref.var_patt [concrete]
// CHECK:STDOUT: %addr: %ptr.0a2 = addr_of imports.%global.var [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: .global = %global.var
// CHECK:STDOUT: .global_ptr = %global_ptr.var
// CHECK:STDOUT: .global_ref = %global_ref.var
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: %global.patt: %pattern_type.bbc = ref_binding_pattern global [concrete]
// CHECK:STDOUT: %global.var_patt: %pattern_type.bbc = var_pattern %global.patt [concrete]
// CHECK:STDOUT: %global.var: ref %C = var %global.var_patt [concrete]
// CHECK:STDOUT: %global_ptr.patt: %pattern_type.8fa = ref_binding_pattern global_ptr [concrete]
// CHECK:STDOUT: %global_ptr.var_patt: %pattern_type.8fa = var_pattern %global_ptr.patt [concrete]
// CHECK:STDOUT: %global_ptr.var: ref %ptr.0a2 = var %global_ptr.var_patt [concrete]
// CHECK:STDOUT: %global_ref.patt: %pattern_type.635 = ref_binding_pattern global_ref [concrete]
// CHECK:STDOUT: %global_ref.var_patt: %pattern_type.635 = var_pattern %global_ref.patt [concrete]
// CHECK:STDOUT: %global_ref.var: ref %const = var %global_ref.var_patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .Cpp = imports.%Cpp
// CHECK:STDOUT: .MyF = %MyF.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Cpp.import_cpp = import_cpp {
// CHECK:STDOUT: import Cpp "global_scope.h"
// CHECK:STDOUT: }
// CHECK:STDOUT: %MyF.decl: %MyF.type = fn_decl @MyF [concrete = constants.%MyF] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C {
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete = constants.%empty_struct_type]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete = constants.%complete_type]
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @MyF() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %local.patt: %pattern_type.bbc = value_binding_pattern local [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %Cpp.ref.loc7_29: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %global.ref: ref %C = name_ref global, imports.%global.var [concrete = imports.%global.var]
// CHECK:STDOUT: %.loc7_24: type = splice_block %C.ref.loc7 [concrete = constants.%C] {
// CHECK:STDOUT: %Cpp.ref.loc7_21: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %C.ref.loc7: type = name_ref C, imports.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: }
// CHECK:STDOUT: %.loc7_32: %C = acquire_value %global.ref
// CHECK:STDOUT: %local: %C = value_binding local, %.loc7_32
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %local_ptr.patt: %pattern_type.8fa = value_binding_pattern local_ptr [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %Cpp.ref.loc8_34: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %global_ptr.ref: ref %ptr.0a2 = name_ref global_ptr, imports.%global_ptr.var [concrete = imports.%global_ptr.var]
// CHECK:STDOUT: %.loc8_30: type = splice_block %ptr.loc8 [concrete = constants.%ptr.0a2] {
// CHECK:STDOUT: %Cpp.ref.loc8_25: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %C.ref.loc8: type = name_ref C, imports.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: %ptr.loc8: type = ptr_type %C.ref.loc8 [concrete = constants.%ptr.0a2]
// CHECK:STDOUT: }
// CHECK:STDOUT: %.loc8_37: %ptr.0a2 = acquire_value %global_ptr.ref
// CHECK:STDOUT: %local_ptr: %ptr.0a2 = value_binding local_ptr, %.loc8_37
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %local_ref.patt: %pattern_type.8fa = value_binding_pattern local_ref [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %Cpp.ref.loc9_34: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %global_ref.ref: ref %const = name_ref global_ref, imports.%global_ref.var [concrete = imports.%global_ref.var]
// CHECK:STDOUT: %.loc9_30: type = splice_block %ptr.loc9 [concrete = constants.%ptr.0a2] {
// CHECK:STDOUT: %Cpp.ref.loc9_25: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %C.ref.loc9: type = name_ref C, imports.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: %ptr.loc9: type = ptr_type %C.ref.loc9 [concrete = constants.%ptr.0a2]
// CHECK:STDOUT: }
// CHECK:STDOUT: %.loc9_37.1: ref %ptr.0a2 = as_compatible %global_ref.ref [concrete = constants.%global_ref.var]
// CHECK:STDOUT: %.loc9_37.2: ref %ptr.0a2 = converted %global_ref.ref, %.loc9_37.1 [concrete = constants.%global_ref.var]
// CHECK:STDOUT: %addr: %ptr.0a2 = addr_of imports.%global.var [concrete = constants.%addr]
// CHECK:STDOUT: %.loc9_37.3: %ptr.0a2 = acquire_value %.loc9_37.2 [concrete = constants.%addr]
// CHECK:STDOUT: %local_ref: %ptr.0a2 = value_binding local_ref, %.loc9_37.3
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_import_unsupported_type.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %MyF.type: type = fn_type @MyF [concrete]
// CHECK:STDOUT: %MyF: %MyF.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .UnusupportedType = <error>
// CHECK:STDOUT: .global = <error>
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .Cpp = imports.%Cpp
// CHECK:STDOUT: .MyF = %MyF.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Cpp.import_cpp = import_cpp {
// CHECK:STDOUT: import Cpp "unsupported_type.h"
// CHECK:STDOUT: }
// CHECK:STDOUT: %MyF.decl: %MyF.type = fn_decl @MyF [concrete = constants.%MyF] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @MyF() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %local.patt: <error> = value_binding_pattern local [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %Cpp.ref.loc22_44: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %global.ref: <error> = name_ref global, <error> [concrete = <error>]
// CHECK:STDOUT: %.1: <error> = splice_block <error> [concrete = <error>] {
// CHECK:STDOUT: %Cpp.ref.loc22_21: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %UnusupportedType.ref: <error> = name_ref UnusupportedType, <error> [concrete = <error>]
// CHECK:STDOUT: }
// CHECK:STDOUT: %local: <error> = value_binding local, <error> [concrete = <error>]
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
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