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cc698d78f5ebc7fdfa887a953d94e00df30dc498
carbon-lang/toolchain/check/testdata/interop/cpp/function/class.carbon
T
Boaz Brickner cc698d78f5 When using a C++ struct as a parameter, map its type to a Carbon class type (#5538) 
This doesn't support actually passing the value of the struct, which is
planned to be implemented using thunks.

`ClangDeclId` value is now `ClangDecl` which includes the mapped Carbon
instruction in addition to the Clang declaration. This allows finding
the Carbon instruction for a given Clang declaration, which is necessary
for mapping a Clang struct parameter type to the Carbon class without
doing name lookup. We don't take the instruction as part of the hash
key, as discussed in
[Discord](https://discord.com/channels/655572317891461132/768530752592805919/1380575881050718469).

To map the type, we also need to map namespaces. To avoid recursion for
inner namespaces, we use a vector.

Note that the first commit just changes the order of functions in the
file to make review easier.

C++ Interop Demo (that shows missing behavior):

```c++
// hello_world.h

struct S {
  S(const S&) { x = 1; }
  int x;
};

void hello_world(S s);
```

```c++
// hello_world.cpp

#include "hello_world.h"

#include <cstdio>

void hello_world2(S s) { printf("hello_world2: %d\n", s.x); }

void hello_world(S s) {
  printf("hello_world: %d\n", s.x);
  hello_world2(s);
}
```

```carbon
// main.carbon

library "Main";

import Cpp library "hello_world.h";

fn Run() -> i32 {
  var s : Cpp.S;
  Cpp.hello_world(s);
  return 0;
}
```

```shell
$ clang -c hello_world.cpp
$ bazel-bin/toolchain/carbon compile main.carbon
$ bazel-bin/toolchain/carbon link hello_world.o main.o --output=demo
$ ./demo
hello_world: -1108224096
hello_world2: 1
```

Part of #5533.
2025-06-20 16:51:58 +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
//
// EXTRA-ARGS: --no-prelude-import
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/interop/cpp/function/class.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interop/cpp/function/class.carbon
// ============================================================================
// Forward-declared class as parameter type
// ============================================================================
// --- decl_value_param_type.h
class C;
auto foo(C) -> void;
// --- fail_todo_import_decl_value_param_type.carbon
library "[[@TEST_NAME]]";
import Cpp library "decl_value_param_type.h";
fn F() {
//@dump-sem-ir-begin
// TODO: This should fail on the fact `C` is declared and not defined.
// CHECK:STDERR: fail_todo_import_decl_value_param_type.carbon:[[@LINE+7]]:3: error: semantics TODO: `Unsupported: parameter type: class C` [SemanticsTodo]
// CHECK:STDERR: Cpp.foo({});
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR: fail_todo_import_decl_value_param_type.carbon:[[@LINE+4]]:3: note: in `Cpp` name lookup for `foo` [InCppNameLookup]
// CHECK:STDERR: Cpp.foo({});
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR:
Cpp.foo({});
//@dump-sem-ir-end
}
// ============================================================================
// Defined class without data members as parameter type
// ============================================================================
// --- definition_no_data_members_value_param_type.h
class C {};
auto foo(C) -> void;
// --- fail_todo_import_definition_no_data_members_value_param_type.carbon
library "[[@TEST_NAME]]";
import Cpp library "definition_no_data_members_value_param_type.h";
fn F() {
//@dump-sem-ir-begin
// CHECK:STDERR: fail_todo_import_definition_no_data_members_value_param_type.carbon:[[@LINE+7]]:3: error: semantics TODO: `Unsupported: parameter type: class C` [SemanticsTodo]
// CHECK:STDERR: Cpp.foo({});
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR: fail_todo_import_definition_no_data_members_value_param_type.carbon:[[@LINE+4]]:3: note: in `Cpp` name lookup for `foo` [InCppNameLookup]
// CHECK:STDERR: Cpp.foo({});
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR:
Cpp.foo({});
//@dump-sem-ir-end
}
// ============================================================================
// Defined class with a single data member as parameter type
// ============================================================================
// --- definition_single_data_member_value_param_type.h
class D {};
class C {
D d;
};
auto foo(C) -> void;
// --- fail_todo_import_definition_single_data_member_value_param_type.carbon
library "[[@TEST_NAME]]";
import Cpp library "definition_single_data_member_value_param_type.h";
fn F() {
//@dump-sem-ir-begin
// CHECK:STDERR: fail_todo_import_definition_single_data_member_value_param_type.carbon:[[@LINE+7]]:3: error: semantics TODO: `Unsupported: parameter type: class C` [SemanticsTodo]
// CHECK:STDERR: Cpp.foo({});
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR: fail_todo_import_definition_single_data_member_value_param_type.carbon:[[@LINE+4]]:3: note: in `Cpp` name lookup for `foo` [InCppNameLookup]
// CHECK:STDERR: Cpp.foo({});
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR:
Cpp.foo({});
//@dump-sem-ir-end
}
// ============================================================================
// Defined class with multiple data members as parameter type
// ============================================================================
// --- definition_multiple_data_members_value_param_type.h
class D {};
class C {
D d1;
D d2;
D d3;
};
auto foo(C) -> void;
// --- fail_todo_import_definition_multiple_data_members_value_param_type.carbon
library "[[@TEST_NAME]]";
import Cpp library "definition_multiple_data_members_value_param_type.h";
fn F() {
//@dump-sem-ir-begin
// CHECK:STDERR: fail_todo_import_definition_multiple_data_members_value_param_type.carbon:[[@LINE+7]]:3: error: semantics TODO: `Unsupported: parameter type: class C` [SemanticsTodo]
// CHECK:STDERR: Cpp.foo({});
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR: fail_todo_import_definition_multiple_data_members_value_param_type.carbon:[[@LINE+4]]:3: note: in `Cpp` name lookup for `foo` [InCppNameLookup]
// CHECK:STDERR: Cpp.foo({});
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR:
Cpp.foo({});
//@dump-sem-ir-end
}
// ============================================================================
// Defined class in namespace
// ============================================================================
// --- definition_in_namespace_value_param_type.h
namespace N { class C {}; }
auto foo(N::C) -> void;
// --- fail_todo_import_definition_in_namespace_value_param_type.carbon
library "[[@TEST_NAME]]";
import Cpp library "definition_in_namespace_value_param_type.h";
fn F() {
//@dump-sem-ir-begin
// CHECK:STDERR: fail_todo_import_definition_in_namespace_value_param_type.carbon:[[@LINE+7]]:3: error: semantics TODO: `Unsupported: parameter type: class N::C` [SemanticsTodo]
// CHECK:STDERR: Cpp.foo({});
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR: fail_todo_import_definition_in_namespace_value_param_type.carbon:[[@LINE+4]]:3: note: in `Cpp` name lookup for `foo` [InCppNameLookup]
// CHECK:STDERR: Cpp.foo({});
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR:
Cpp.foo({});
//@dump-sem-ir-end
}
// ============================================================================
// Defined class in relative namespace
// ============================================================================
// --- definition_in_relative_namespace_value_param_type.h
namespace N1 {
namespace N2 { class C {}; }
auto foo(N2::C) -> void;
}
// --- fail_todo_import_definition_in_relative_namespace_value_param_type.carbon
library "[[@TEST_NAME]]";
import Cpp library "definition_in_relative_namespace_value_param_type.h";
fn F() {
//@dump-sem-ir-begin
// CHECK:STDERR: fail_todo_import_definition_in_relative_namespace_value_param_type.carbon:[[@LINE+7]]:3: error: semantics TODO: `Unsupported: parameter type: class N1::N2::C` [SemanticsTodo]
// CHECK:STDERR: Cpp.N1.foo({});
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR: fail_todo_import_definition_in_relative_namespace_value_param_type.carbon:[[@LINE+4]]:3: note: in `Cpp` name lookup for `foo` [InCppNameLookup]
// CHECK:STDERR: Cpp.N1.foo({});
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR:
Cpp.N1.foo({});
//@dump-sem-ir-end
}
// ============================================================================
// Defined class and explicitly used
// ============================================================================
// --- definition_with_static_method.h
class C {
static void bar();
};
auto foo(C) -> void;
// --- fail_todo_import_definition_and_static_method_call_before.carbon
library "[[@TEST_NAME]]";
import Cpp library "definition_with_static_method.h";
fn F() {
//@dump-sem-ir-begin
Cpp.C.bar();
// CHECK:STDERR: fail_todo_import_definition_and_static_method_call_before.carbon:[[@LINE+7]]:3: error: semantics TODO: `Unsupported: parameter type: class C` [SemanticsTodo]
// CHECK:STDERR: Cpp.foo({});
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR: fail_todo_import_definition_and_static_method_call_before.carbon:[[@LINE+4]]:3: note: in `Cpp` name lookup for `foo` [InCppNameLookup]
// CHECK:STDERR: Cpp.foo({});
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR:
Cpp.foo({});
//@dump-sem-ir-end
}
// --- fail_todo_import_definition_and_static_method_call_after.carbon
library "[[@TEST_NAME]]";
import Cpp library "definition_with_static_method.h";
fn F() {
//@dump-sem-ir-begin
// CHECK:STDERR: fail_todo_import_definition_and_static_method_call_after.carbon:[[@LINE+7]]:3: error: semantics TODO: `Unsupported: parameter type: class C` [SemanticsTodo]
// CHECK:STDERR: Cpp.foo({});
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR: fail_todo_import_definition_and_static_method_call_after.carbon:[[@LINE+4]]:3: note: in `Cpp` name lookup for `foo` [InCppNameLookup]
// CHECK:STDERR: Cpp.foo({});
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR:
Cpp.foo({});
Cpp.C.bar();
//@dump-sem-ir-end
}
// ============================================================================
// Pointer to forward-declared class as parameter type
// ============================================================================
// --- decl_pointer_param_type.h
class C;
auto foo(C*) -> void;
// --- fail_todo_import_decl_pointer_param_type.carbon
library "[[@TEST_NAME]]";
import Cpp library "decl_pointer_param_type.h";
// CHECK:STDERR: fail_todo_import_decl_pointer_param_type.carbon:[[@LINE+7]]:9: error: semantics TODO: `Unsupported: Record declarations without a definition` [SemanticsTodo]
// CHECK:STDERR: fn F(s: Cpp.C*) {
// CHECK:STDERR: ^~~~~
// CHECK:STDERR: fail_todo_import_decl_pointer_param_type.carbon:[[@LINE+4]]:9: note: in `Cpp` name lookup for `C` [InCppNameLookup]
// CHECK:STDERR: fn F(s: Cpp.C*) {
// CHECK:STDERR: ^~~~~
// CHECK:STDERR:
fn F(s: Cpp.C*) {
//@dump-sem-ir-begin
// CHECK:STDERR: fail_todo_import_decl_pointer_param_type.carbon:[[@LINE+7]]:3: error: semantics TODO: `Unsupported: parameter type: class C *` [SemanticsTodo]
// CHECK:STDERR: Cpp.foo(s);
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR: fail_todo_import_decl_pointer_param_type.carbon:[[@LINE+4]]:3: note: in `Cpp` name lookup for `foo` [InCppNameLookup]
// CHECK:STDERR: Cpp.foo(s);
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR:
Cpp.foo(s);
//@dump-sem-ir-end
}
// ============================================================================
// Pointer to defined class as parameter type
// ============================================================================
// --- definition_pointer_param_type.h
class C {};
auto foo(C*) -> void;
// --- fail_todo_import_definition_pointer_param_type.carbon
library "[[@TEST_NAME]]";
import Cpp library "definition_pointer_param_type.h";
fn F(s: Cpp.C*) {
//@dump-sem-ir-begin
// CHECK:STDERR: fail_todo_import_definition_pointer_param_type.carbon:[[@LINE+7]]:3: error: semantics TODO: `Unsupported: parameter type: class C *` [SemanticsTodo]
// CHECK:STDERR: Cpp.foo(s);
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR: fail_todo_import_definition_pointer_param_type.carbon:[[@LINE+4]]:3: note: in `Cpp` name lookup for `foo` [InCppNameLookup]
// CHECK:STDERR: Cpp.foo(s);
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR:
Cpp.foo(s);
//@dump-sem-ir-end
}
// ============================================================================
// Forward-declared class as return type
// ============================================================================
// --- decl_value_return_type.h
class C;
auto foo() -> C;
// --- fail_todo_import_decl_value_return_type.carbon
library "[[@TEST_NAME]]";
import Cpp library "decl_value_return_type.h";
fn F() {
// TODO: This should fail on the fact `C` is declared and not defined.
// CHECK:STDERR: fail_todo_import_decl_value_return_type.carbon:[[@LINE+7]]:3: error: semantics TODO: `Unsupported: return type: class C` [SemanticsTodo]
// CHECK:STDERR: Cpp.foo();
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR: fail_todo_import_decl_value_return_type.carbon:[[@LINE+4]]:3: note: in `Cpp` name lookup for `foo` [InCppNameLookup]
// CHECK:STDERR: Cpp.foo();
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR:
Cpp.foo();
}
// ============================================================================
// Defined class as return type
// ============================================================================
// --- definition_value_return_type.h
class C {};
auto foo() -> C;
// --- fail_todo_import_definition_value_return_type.carbon
library "[[@TEST_NAME]]";
import Cpp library "definition_value_return_type.h";
fn F() {
//@dump-sem-ir-begin
// CHECK:STDERR: fail_todo_import_definition_value_return_type.carbon:[[@LINE+7]]:3: error: semantics TODO: `Unsupported: return type: class C` [SemanticsTodo]
// CHECK:STDERR: Cpp.foo();
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR: fail_todo_import_definition_value_return_type.carbon:[[@LINE+4]]:3: note: in `Cpp` name lookup for `foo` [InCppNameLookup]
// CHECK:STDERR: Cpp.foo();
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR:
Cpp.foo();
//@dump-sem-ir-end
}
// ============================================================================
// Pointer to forward-declared class as return type
// ============================================================================
// --- decl_pointer_return_type.h
class C;
auto foo() -> C*;
// --- fail_todo_import_decl_pointer_return_type.carbon
library "[[@TEST_NAME]]";
import Cpp library "decl_pointer_return_type.h";
fn F() {
//@dump-sem-ir-begin
// CHECK:STDERR: fail_todo_import_decl_pointer_return_type.carbon:[[@LINE+7]]:3: error: semantics TODO: `Unsupported: return type: class C *` [SemanticsTodo]
// CHECK:STDERR: Cpp.foo();
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR: fail_todo_import_decl_pointer_return_type.carbon:[[@LINE+4]]:3: note: in `Cpp` name lookup for `foo` [InCppNameLookup]
// CHECK:STDERR: Cpp.foo();
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR:
Cpp.foo();
//@dump-sem-ir-end
}
// ============================================================================
// Pointer to defined class as return type
// ============================================================================
// --- definition_pointer_return_type.h
class C {};
auto foo() -> C*;
// --- fail_todo_import_definition_pointer_return_type.carbon
library "[[@TEST_NAME]]";
import Cpp library "definition_pointer_return_type.h";
fn F() {
//@dump-sem-ir-begin
// CHECK:STDERR: fail_todo_import_definition_pointer_return_type.carbon:[[@LINE+7]]:3: error: semantics TODO: `Unsupported: return type: class C *` [SemanticsTodo]
// CHECK:STDERR: Cpp.foo();
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR: fail_todo_import_definition_pointer_return_type.carbon:[[@LINE+4]]:3: note: in `Cpp` name lookup for `foo` [InCppNameLookup]
// CHECK:STDERR: Cpp.foo();
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR:
Cpp.foo();
//@dump-sem-ir-end
}
// CHECK:STDOUT: --- fail_todo_import_decl_value_param_type.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .foo = <error>
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %foo.ref: <error> = name_ref foo, <error> [concrete = <error>]
// CHECK:STDOUT: %.loc16: %empty_struct_type = struct_literal ()
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_import_definition_no_data_members_value_param_type.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .foo = <error>
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %foo.ref: <error> = name_ref foo, <error> [concrete = <error>]
// CHECK:STDOUT: %.loc15: %empty_struct_type = struct_literal ()
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_import_definition_single_data_member_value_param_type.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .foo = <error>
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %foo.ref: <error> = name_ref foo, <error> [concrete = <error>]
// CHECK:STDOUT: %.loc15: %empty_struct_type = struct_literal ()
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_import_definition_multiple_data_members_value_param_type.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .foo = <error>
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %foo.ref: <error> = name_ref foo, <error> [concrete = <error>]
// CHECK:STDOUT: %.loc15: %empty_struct_type = struct_literal ()
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_import_definition_in_namespace_value_param_type.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .foo = <error>
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %foo.ref: <error> = name_ref foo, <error> [concrete = <error>]
// CHECK:STDOUT: %.loc15: %empty_struct_type = struct_literal ()
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_import_definition_in_relative_namespace_value_param_type.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .N1 = %N1
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: %N1: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .foo = <error>
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %N1.ref: <namespace> = name_ref N1, imports.%N1 [concrete = imports.%N1]
// CHECK:STDOUT: %foo.ref: <error> = name_ref foo, <error> [concrete = <error>]
// CHECK:STDOUT: %.loc15: %empty_struct_type = struct_literal ()
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_import_definition_and_static_method_call_before.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: %bar.type: type = fn_type @bar [concrete]
// CHECK:STDOUT: %bar: %bar.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: .foo = <error>
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: %bar.decl: %bar.type = fn_decl @bar [concrete = constants.%bar] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref.loc8: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: %C.ref: type = name_ref C, imports.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: %bar.ref: %bar.type = name_ref bar, imports.%bar.decl [concrete = constants.%bar]
// CHECK:STDOUT: %bar.call: init %empty_tuple.type = call %bar.ref()
// CHECK:STDOUT: %Cpp.ref.loc16: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %foo.ref: <error> = name_ref foo, <error> [concrete = <error>]
// CHECK:STDOUT: %.loc16: %empty_struct_type = struct_literal ()
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_import_definition_and_static_method_call_after.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: %bar.type: type = fn_type @bar [concrete]
// CHECK:STDOUT: %bar: %bar.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .foo = <error>
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: %bar.decl: %bar.type = fn_decl @bar [concrete = constants.%bar] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref.loc15: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %foo.ref: <error> = name_ref foo, <error> [concrete = <error>]
// CHECK:STDOUT: %.loc15: %empty_struct_type = struct_literal ()
// CHECK:STDOUT: %Cpp.ref.loc16: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: %C.ref: type = name_ref C, imports.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: %bar.ref: %bar.type = name_ref bar, imports.%bar.decl [concrete = constants.%bar]
// CHECK:STDOUT: %bar.call: init %empty_tuple.type = call %bar.ref()
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_import_decl_pointer_param_type.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .C = <error>
// CHECK:STDOUT: .foo = <error>
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F(%s.param: <error>) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref.loc22: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %foo.ref: <error> = name_ref foo, <error> [concrete = <error>]
// CHECK:STDOUT: %s.ref: <error> = name_ref s, %s [concrete = <error>]
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_import_definition_pointer_param_type.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: %ptr: type = ptr_type %C [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: .foo = <error>
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F(%s.param: %ptr) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref.loc15: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %foo.ref: <error> = name_ref foo, <error> [concrete = <error>]
// CHECK:STDOUT: %s.ref: %ptr = name_ref s, %s
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_import_definition_value_return_type.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .foo = <error>
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %foo.ref: <error> = name_ref foo, <error> [concrete = <error>]
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_import_decl_pointer_return_type.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .foo = <error>
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %foo.ref: <error> = name_ref foo, <error> [concrete = <error>]
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_import_definition_pointer_return_type.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .foo = <error>
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %foo.ref: <error> = name_ref foo, <error> [concrete = <error>]
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
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