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carbon-lang/toolchain/check/testdata/class/extern.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/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: %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: %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: %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: %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: %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: %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: %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: %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: %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: %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: %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: %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;
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_decl_after_import_extern_decl.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// 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;
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_def_after_import_extern_decl.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// 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 {
// 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: %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 {
// 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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