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https://github.com/carbon-language/carbon-lang.git
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Nicholas Bishop
f2d0c4d0ae
Add `ExportVarToCpp`. This checks the `clang_decls` mapping and returns an existing decl if found. Otherwise, it creates a new `VarDecl` and adds it to the `clang_decls` mapping. When lowering, in `FileContext::BuildGlobalVariableDecl`, the `clang_decls` mapping is used to lookup an existing `llvm::GlobalVariable` for the instruction. If found, use that rather than creating a new one to avoid an unwanted second definition in the llvm IR.
46 lines
1.3 KiB
Plaintext
46 lines
1.3 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/int.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/check/testdata/interop/cpp/var/export/var.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/check/testdata/interop/cpp/var/export/var.carbon
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// --- var.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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var x: i32 = 123;
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inline Cpp '''
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int Get() {
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return Carbon::x;
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}
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''';
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// --- fail_var_unsupported_type.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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// CHECK:STDERR: fail_var_unsupported_type.carbon:[[@LINE+4]]:5: error: semantics TODO: `failed to map Carbon type to C++` [SemanticsTodo]
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// CHECK:STDERR: var x: () = ();
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// CHECK:STDERR: ^~~~~
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// CHECK:STDERR:
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var x: () = ();
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inline Cpp '''
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void F() {
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// CHECK:STDERR: fail_var_unsupported_type.carbon:[[@LINE+4]]:11: error: no member named 'x' in namespace 'Carbon' [CppInteropParseError]
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// CHECK:STDERR: 17 | Carbon::x;
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// CHECK:STDERR: | ^
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// CHECK:STDERR:
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Carbon::x;
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}
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''';
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