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carbon-lang/toolchain/check/testdata/interop/cpp/class/export/class.carbon
T
David Blaikie 99cda60df7 Add location to clang classes created via reverse interop (#7533)
The specific location's not ideal (rather than the open curly, or
semicolon for a declaration - the two locations should be the `class`
and then the class name), but the same as we do for functions for now &
enough to get by.

This specifically also fixes a crash I found due to dtors being
generated without a location (because implicitly created functions would
use the class's location), creating a function call without a debug
location, which fails the LLVM IR verifier.
2026-07-18 00:13:05 +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/check/testdata/interop/cpp/class/export/class.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interop/cpp/class/export/class.carbon
// --- static_members.carbon
library "[[@TEST_NAME]]";
import Cpp;
class A {
fn F() {}
}
inline Cpp '''
void G() {
Carbon::A::F();
}
''';
// --- nested.carbon
library "[[@TEST_NAME]]";
import Cpp;
class A {
class B {
class C {
}
}
}
inline Cpp '''
void G() {
Carbon::A::B::C *p = nullptr;
}
''';
// --- incomplete.carbon
library "[[@TEST_NAME]]";
import Cpp;
class A;
inline Cpp '''
Carbon::A *p = nullptr;
''';
// --- fail_incomplete_concrete.carbon
library "[[@TEST_NAME]]";
import Cpp;
// CHECK:STDERR: fail_incomplete_concrete.carbon:[[@LINE+4]]:1: error: class was forward declared here [ClassForwardDeclaredHere]
// CHECK:STDERR: class A;
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR:
class A;
inline Cpp '''
// CHECK:STDERR: fail_incomplete_concrete.carbon:[[@LINE+7]]:11: error: variable has incomplete type 'Carbon::A' [CppInteropParseError]
// CHECK:STDERR: 19 | Carbon::A a;
// CHECK:STDERR: | ^
// CHECK:STDERR: fail_incomplete_concrete.carbon:[[@LINE-6]]:8: note: forward declaration of 'Carbon::A' [CppInteropParseNote]
// CHECK:STDERR: 9 | class A;
// CHECK:STDERR: | ^
// CHECK:STDERR:
Carbon::A a;
''';
// --- fail_todo_monomorphization_failure.carbon
library "[[@TEST_NAME]]";
import Cpp;
class B(N: i32) {
var a: array(i8, N);
}
// TODO: Once we allow this, we should produce an "invalid array bound" error
// during monomorphization triggered by the C++ code.
alias T = B(-1);
inline Cpp '''
// CHECK:STDERR: fail_todo_monomorphization_failure.carbon:[[@LINE+8]]:1: error: semantics TODO: `interop with unsupported type` [SemanticsTodo]
// CHECK:STDERR: Carbon::T t;
// CHECK:STDERR: ^
// CHECK:STDERR:
// CHECK:STDERR: fail_todo_monomorphization_failure.carbon:[[@LINE+4]]:9: error: no type named 'T' in namespace 'Carbon' [CppInteropParseError]
// CHECK:STDERR: 22 | Carbon::T t;
// CHECK:STDERR: | ~~~~~~~~^
// CHECK:STDERR:
Carbon::T t;
''';