mirror of
https://github.com/carbon-language/carbon-lang.git
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Richard Smith
c7886f4336
Fixes mangling for `extern "C"` functions, as well as some other uncommon cases like multi-version functions.
69 lines
2.6 KiB
Plaintext
69 lines
2.6 KiB
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/full.carbon
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//
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// AUTOUPDATE
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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/interop/cpp/fail_extern_c.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/interop/cpp/fail_extern_c.carbon
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// These tests were factored out of `extern_c.carbon` because we do not generate
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// LLVM IR if any test contains errors. They should be moved back once they can
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// successfully compile.
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// ============================================================================
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// extern "C" variable
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// ============================================================================
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// --- extern_c_variable.h
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extern "C" int foo;
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// --- fail_todo_import_extern_c_variable.carbon
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library "[[@TEST_NAME]]";
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import Cpp library "extern_c_variable.h";
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fn MyF() -> i32 {
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// CHECK:STDERR: fail_todo_import_extern_c_variable.carbon:[[@LINE+11]]:10: error: semantics TODO: `Unsupported: Declaration type Var` [SemanticsTodo]
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// CHECK:STDERR: return Cpp.foo;
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// CHECK:STDERR: ^~~~~~~
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// CHECK:STDERR: fail_todo_import_extern_c_variable.carbon:[[@LINE+8]]:10: note: in `Cpp` name lookup for `foo` [InCppNameLookup]
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// CHECK:STDERR: return Cpp.foo;
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// CHECK:STDERR: ^~~~~~~
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// CHECK:STDERR:
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// CHECK:STDERR: fail_todo_import_extern_c_variable.carbon:[[@LINE+4]]:10: error: member name `foo` not found in `Cpp` [MemberNameNotFoundInInstScope]
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// CHECK:STDERR: return Cpp.foo;
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// CHECK:STDERR: ^~~~~~~
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// CHECK:STDERR:
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return Cpp.foo;
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}
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// ============================================================================
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// extern "C" function with C++ special name
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// ============================================================================
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// --- extern_c_with_special_name.h
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struct X {};
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extern "C" X operator+(X, X);
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// --- fail_todo_import_extern_c_with_special_name.carbon
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library "[[@TEST_NAME]]";
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import Cpp library "extern_c_with_special_name.h";
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fn MyF(a: Cpp.X, b: Cpp.X) -> Cpp.X {
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// CHECK:STDERR: fail_todo_import_extern_c_with_special_name.carbon:[[@LINE+4]]:10: error: cannot access member of interface `Core.AddWith(Cpp.X)` in type `Cpp.X` that does not implement that interface [MissingImplInMemberAccess]
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// CHECK:STDERR: return a + b;
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// CHECK:STDERR: ^~~~~
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// CHECK:STDERR:
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return a + b;
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}
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