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carbon-lang/toolchain/check/testdata/class/extern.carbon
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Dana Jansens fcae9610bd Make SemIR::TypeType be an empty FacetType instruction (#7813) 
The type `type` is now a `FacetType` inst with no constraints. This
brings the model implemented in the toolchain into better alignment with
the language design. The `SemIR::TypeType` struct remains as a scope for
holding the `TypeInstId`, `ConstantId`, and `TypeId` constants, but is
not an `InstKind` anymore.

The `TypeType` inst looks a lot like singletons, but there are many
`FacetType` insts so it doesn't quite fit that model. So we put it
alongside singletons with a fixed inst id but refer to it as a more
general "builtin" inst that is not a singleton.
`Namespace::PackageInstId` is similar, and we group it with `TypeType`
conceptually as another builtin instruction with a fixed id.

No conversion is needed anymore to use a `type` as a facet, since types
also have a `FacetType` type. This simplifies and removes a number of
helpers and branches throughout the code.

The `TypeType` inst is now part of the constant store, so we end up
printing it in the constants block in every test. But it's also named
`type` rather than `%type` to preserve the majority of existing
formatting behaviour, though this does look different from other
constants.

Assisted-by: Opus 5 was used to generate a first draft and validate the
refactoring. Though nearly everything non-trivial the tool wrote has
been modified or rewritten.
2026-09-22 15:04:40 +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/none.carbon
// TODO: Add ranges and switch to "--dump-sem-ir-ranges=only".
// 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/class/extern.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/class/extern.carbon
// ============================================================================
// Setup files
// ============================================================================
// --- decl.carbon
library "[[@TEST_NAME]]";
class C;
// --- extern_decl.carbon
library "[[@TEST_NAME]]";
extern class C;
// --- extern_decl_copy.carbon
library "[[@TEST_NAME]]";
extern class C;
// --- def.carbon
library "[[@TEST_NAME]]";
class C {}
// ============================================================================
// Test files
// ============================================================================
// --- fail_decl_fn_in_extern.carbon
library "[[@TEST_NAME]]";
extern class C;
// CHECK:STDERR: fail_decl_fn_in_extern.carbon:[[@LINE+7]]:4: error: cannot declare a member of incomplete class `C` [QualifiedDeclInIncompleteClassScope]
// CHECK:STDERR: fn C.F();
// CHECK:STDERR: ^
// CHECK:STDERR: fail_decl_fn_in_extern.carbon:[[@LINE-4]]:1: note: class was forward declared here [ClassForwardDeclaredHere]
// CHECK:STDERR: extern class C;
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR:
fn C.F();
// --- extern_def.carbon
library "[[@TEST_NAME]]";
extern class C {}
// --- fail_extern_decl_after_extern_decl.carbon
library "[[@TEST_NAME]]";
extern class C;
// CHECK:STDERR: fail_extern_decl_after_extern_decl.carbon:[[@LINE+7]]:1: error: redeclaration of `class C` is redundant [RedeclRedundant]
// CHECK:STDERR: extern class C;
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR: fail_extern_decl_after_extern_decl.carbon:[[@LINE-4]]:1: note: previously declared here [RedeclPrevDecl]
// CHECK:STDERR: extern class C;
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR:
extern class C;
// --- fail_decl_after_extern_decl.carbon
library "[[@TEST_NAME]]";
extern class C;
// CHECK:STDERR: fail_decl_after_extern_decl.carbon:[[@LINE+7]]:1: error: redeclaration of `class C` is redundant [RedeclRedundant]
// CHECK:STDERR: class C;
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR: fail_decl_after_extern_decl.carbon:[[@LINE-4]]:1: note: previously declared here [RedeclPrevDecl]
// CHECK:STDERR: extern class C;
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR:
class C;
// --- fail_extern_member_class.carbon
library "[[@TEST_NAME]]";
class C {
// CHECK:STDERR: fail_extern_member_class.carbon:[[@LINE+4]]:3: error: `extern` not allowed; requires file or namespace scope [ModifierExternNotAllowed]
// CHECK:STDERR: extern class D;
// CHECK:STDERR: ^~~~~~
// CHECK:STDERR:
extern class D;
}
// --- fail_def_after_extern_decl.carbon
library "[[@TEST_NAME]]";
extern class C;
// CHECK:STDERR: fail_def_after_extern_decl.carbon:[[@LINE+7]]:1: error: redeclarations of `class C` must match use of `extern` [RedeclExternMismatch]
// CHECK:STDERR: class C {}
// CHECK:STDERR: ^~~~~~~~~
// CHECK:STDERR: fail_def_after_extern_decl.carbon:[[@LINE-4]]:1: note: previously declared here [RedeclPrevDecl]
// CHECK:STDERR: extern class C;
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR:
class C {}
// --- fail_extern_decl_after_decl.carbon
library "[[@TEST_NAME]]";
class C;
// CHECK:STDERR: fail_extern_decl_after_decl.carbon:[[@LINE+7]]:1: error: redeclaration of `class C` is redundant [RedeclRedundant]
// CHECK:STDERR: extern class C;
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR: fail_extern_decl_after_decl.carbon:[[@LINE-4]]:1: note: previously declared here [RedeclPrevDecl]
// CHECK:STDERR: class C;
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR:
extern class C;
// --- fail_import_extern_decl_then_decl.carbon
library "[[@TEST_NAME]]";
// CHECK:STDERR: fail_import_extern_decl_then_decl.carbon:[[@LINE+9]]:1: in import [InImport]
// CHECK:STDERR: decl.carbon:4:1: error: duplicate name `C` being declared in the same scope [NameDeclDuplicate]
// CHECK:STDERR: class C;
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR: fail_import_extern_decl_then_decl.carbon:[[@LINE+5]]:1: in import [InImport]
// CHECK:STDERR: extern_decl.carbon:4:1: note: name is previously declared here [NameDeclPrevious]
// CHECK:STDERR: extern class C;
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR:
import library "extern_decl";
import library "decl";
// --- fail_import_decl_then_extern_decl.carbon
library "[[@TEST_NAME]]";
// CHECK:STDERR: fail_import_decl_then_extern_decl.carbon:[[@LINE+9]]:1: in import [InImport]
// CHECK:STDERR: extern_decl.carbon:4:1: error: duplicate name `C` being declared in the same scope [NameDeclDuplicate]
// CHECK:STDERR: extern class C;
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR: fail_import_decl_then_extern_decl.carbon:[[@LINE+5]]:1: in import [InImport]
// CHECK:STDERR: decl.carbon:4:1: note: name is previously declared here [NameDeclPrevious]
// CHECK:STDERR: class C;
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR:
import library "decl";
import library "extern_decl";
// --- fail_import_extern_decl_then_def.carbon
library "[[@TEST_NAME]]";
// CHECK:STDERR: fail_import_extern_decl_then_def.carbon:[[@LINE+9]]:1: in import [InImport]
// CHECK:STDERR: def.carbon:4:1: error: duplicate name `C` being declared in the same scope [NameDeclDuplicate]
// CHECK:STDERR: class C {}
// CHECK:STDERR: ^~~~~~~~~
// CHECK:STDERR: fail_import_extern_decl_then_def.carbon:[[@LINE+5]]:1: in import [InImport]
// CHECK:STDERR: extern_decl.carbon:4:1: note: name is previously declared here [NameDeclPrevious]
// CHECK:STDERR: extern class C;
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR:
import library "extern_decl";
import library "def";
// --- fail_import_ownership_conflict.carbon
library "[[@TEST_NAME]]";
// CHECK:STDERR: fail_import_ownership_conflict.carbon:[[@LINE+18]]:1: in import [InImport]
// CHECK:STDERR: decl.carbon:4:1: error: duplicate name `C` being declared in the same scope [NameDeclDuplicate]
// CHECK:STDERR: class C;
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR: fail_import_ownership_conflict.carbon:[[@LINE+14]]:1: in import [InImport]
// CHECK:STDERR: extern_decl.carbon:4:1: note: name is previously declared here [NameDeclPrevious]
// CHECK:STDERR: extern class C;
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR:
// CHECK:STDERR: fail_import_ownership_conflict.carbon:[[@LINE+9]]:1: in import [InImport]
// CHECK:STDERR: def.carbon:4:1: error: duplicate name `C` being declared in the same scope [NameDeclDuplicate]
// CHECK:STDERR: class C {}
// CHECK:STDERR: ^~~~~~~~~
// CHECK:STDERR: fail_import_ownership_conflict.carbon:[[@LINE+5]]:1: in import [InImport]
// CHECK:STDERR: extern_decl.carbon:4:1: note: name is previously declared here [NameDeclPrevious]
// CHECK:STDERR: extern class C;
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR:
import library "extern_decl";
import library "decl";
import library "def";
// --- fail_todo_import_extern_decl_copy.carbon
library "[[@TEST_NAME]]";
// CHECK:STDERR: fail_todo_import_extern_decl_copy.carbon:[[@LINE+9]]:1: in import [InImport]
// CHECK:STDERR: extern_decl_copy.carbon:4:1: error: duplicate name `C` being declared in the same scope [NameDeclDuplicate]
// CHECK:STDERR: extern class C;
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR: fail_todo_import_extern_decl_copy.carbon:[[@LINE+5]]:1: in import [InImport]
// CHECK:STDERR: extern_decl.carbon:4:1: note: name is previously declared here [NameDeclPrevious]
// CHECK:STDERR: extern class C;
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR:
import library "extern_decl";
import library "extern_decl_copy";
// --- fail_extern_decl_after_import_extern_decl.carbon
library "[[@TEST_NAME]]";
import library "extern_decl";
// CHECK:STDERR: fail_extern_decl_after_import_extern_decl.carbon:[[@LINE+8]]:1: error: redeclaration of `class C` is redundant [RedeclRedundant]
// CHECK:STDERR: extern class C;
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR: fail_extern_decl_after_import_extern_decl.carbon:[[@LINE-5]]:1: in import [InImport]
// CHECK:STDERR: extern_decl.carbon:4:1: note: previously declared here [RedeclPrevDecl]
// CHECK:STDERR: extern class C;
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR:
extern class C;
// --- fail_decl_after_import_extern_decl.carbon
library "[[@TEST_NAME]]";
import library "decl";
// CHECK:STDERR: fail_decl_after_import_extern_decl.carbon:[[@LINE+8]]:1: error: redeclarations of `class C` must match use of `extern` [RedeclExternMismatch]
// CHECK:STDERR: extern class C;
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR: fail_decl_after_import_extern_decl.carbon:[[@LINE-5]]:1: in import [InImport]
// CHECK:STDERR: decl.carbon:4:1: note: previously declared here [RedeclPrevDecl]
// CHECK:STDERR: class C;
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR:
extern class C;
// --- fail_def_after_import_extern_decl.carbon
library "[[@TEST_NAME]]";
import library "def";
// CHECK:STDERR: fail_def_after_import_extern_decl.carbon:[[@LINE+8]]:1: error: redeclarations of `class C` must match use of `extern` [RedeclExternMismatch]
// CHECK:STDERR: extern class C;
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR: fail_def_after_import_extern_decl.carbon:[[@LINE-5]]:1: in import [InImport]
// CHECK:STDERR: def.carbon:4:1: note: previously declared here [RedeclPrevDecl]
// CHECK:STDERR: class C {}
// CHECK:STDERR: ^~~~~~~~~
// CHECK:STDERR:
extern class C;
// --- fail_extern_decl_after_import_def.carbon
library "[[@TEST_NAME]]";
import library "def";
// CHECK:STDERR: fail_extern_decl_after_import_def.carbon:[[@LINE+8]]:1: error: redeclarations of `class C` must match use of `extern` [RedeclExternMismatch]
// CHECK:STDERR: extern class C;
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR: fail_extern_decl_after_import_def.carbon:[[@LINE-5]]:1: in import [InImport]
// CHECK:STDERR: def.carbon:4:1: note: previously declared here [RedeclPrevDecl]
// CHECK:STDERR: class C {}
// CHECK:STDERR: ^~~~~~~~~
// CHECK:STDERR:
extern class C;
// CHECK:STDOUT: --- decl.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C;
// CHECK:STDOUT:
// CHECK:STDOUT: --- extern_decl.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C;
// CHECK:STDOUT:
// CHECK:STDOUT: --- extern_decl_copy.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C;
// CHECK:STDOUT:
// CHECK:STDOUT: --- def.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [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: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C {
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness constants.%empty_struct_type [concrete = constants.%complete_type]
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%C
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_decl_fn_in_extern.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F();
// CHECK:STDOUT:
// CHECK:STDOUT: --- extern_def.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [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: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C {
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness constants.%empty_struct_type [concrete = constants.%complete_type]
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%C
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_extern_decl_after_extern_decl.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = %C.decl.loc4
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl.loc4: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: %C.decl.loc12: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C;
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_decl_after_extern_decl.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = %C.decl.loc12
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl.loc4: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: %C.decl.loc12: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C;
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_extern_member_class.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: %D: type = class_type @D [concrete]
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C {
// CHECK:STDOUT: %D.decl: type = class_decl @D [concrete = constants.%D] {} {}
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness constants.%empty_struct_type [concrete = constants.%complete_type]
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%C
// CHECK:STDOUT: .D = %D.decl
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @D;
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_def_after_extern_decl.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [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: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = %C.decl.loc12
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl.loc4: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: %C.decl.loc12: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C {
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness constants.%empty_struct_type [concrete = constants.%complete_type]
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%C
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_extern_decl_after_decl.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = %C.decl.loc4
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl.loc4: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: %C.decl.loc12: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C;
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_import_extern_decl_then_decl.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Main.C = import_ref Main//extern_decl, C, unloaded
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = imports.%Main.C
// CHECK:STDOUT: }
// CHECK:STDOUT: %default.import = import <none>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_import_decl_then_extern_decl.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Main.C = import_ref Main//decl, C, unloaded
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = imports.%Main.C
// CHECK:STDOUT: }
// CHECK:STDOUT: %default.import = import <none>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_import_extern_decl_then_def.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Main.C = import_ref Main//extern_decl, C, unloaded
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = imports.%Main.C
// CHECK:STDOUT: }
// CHECK:STDOUT: %default.import = import <none>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_import_ownership_conflict.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Main.C = import_ref Main//extern_decl, C, unloaded
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = imports.%Main.C
// CHECK:STDOUT: }
// CHECK:STDOUT: %default.import = import <none>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_import_extern_decl_copy.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Main.C = import_ref Main//extern_decl, C, unloaded
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = imports.%Main.C
// CHECK:STDOUT: }
// CHECK:STDOUT: %default.import = import <none>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_extern_decl_after_import_extern_decl.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %default.import = import <none>
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C [from "extern_decl.carbon"];
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_decl_after_import_extern_decl.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %default.import = import <none>
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C [from "decl.carbon"];
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_def_after_import_extern_decl.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [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: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Main.import_ref.8f2: <witness> = import_ref Main//def, loc4_10, loaded [concrete = constants.%complete_type]
// CHECK:STDOUT: %Main.import_ref.e47 = import_ref Main//def, inst{{[0-9A-F]+}} [no loc], unloaded
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %default.import = import <none>
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C [from "def.carbon"] {
// CHECK:STDOUT: complete_type_witness = imports.%Main.import_ref.8f2
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = imports.%Main.import_ref.e47
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_extern_decl_after_import_def.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [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: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Main.import_ref.8f2: <witness> = import_ref Main//def, loc4_10, loaded [concrete = constants.%complete_type]
// CHECK:STDOUT: %Main.import_ref.e47 = import_ref Main//def, inst{{[0-9A-F]+}} [no loc], unloaded
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %default.import = import <none>
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C [from "def.carbon"] {
// CHECK:STDOUT: complete_type_witness = imports.%Main.import_ref.8f2
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = imports.%Main.import_ref.e47
// CHECK:STDOUT: }
// CHECK:STDOUT:
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