<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/58553>58553</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang][unittest] ClangSupportTests link time failure 
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          jmciver
      </td>
    </tr>
</table>

<pre>
    ## Issue

When running `ninja-build check-all` `ClangSupportTests` is failing to link:

```
[15/65] Linking CXX executable tools/clang/unittests/Support/ClangSupportTests
FAILED: tools/clang/unittests/Support/ClangSupportTests 
: && /usr/bin/c++ -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-maybe-uninitialized -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual -fno-strict-aliasing -O3 -DNDEBUG -fuse-ld=gold     -Wl,--gc-sections tools/clang/unittests/Support/CMakeFiles/ClangSupportTests.dir/TimeProfilerTest.cpp.o -o tools/clang/unittests/Support/ClangSupportTests  -Wl,-rpath,/work/userid/llvm-main/build/release/lib  lib/libllvm_gtest_main.so.16git  lib/libllvm_gtest.so.16git  lib/libclangFrontend.so.16git  lib/libLLVMSupport.so.16git  -Wl,-rpath-link,/work/userid/llvm-main/build/release/lib && :
tools/clang/unittests/Support/CMakeFiles/ClangSupportTests.dir/TimeProfilerTest.cpp.o:TimeProfilerTest.cpp:function (anonymous namespace)::compileFromString(llvm::StringRef)::TestFrontendAction::CreateASTConsumer(clang::CompilerInstance&, llvm::StringRef): error: undefined reference to 'vtable for clang::ASTConsumer'
/usr/bin/ld.gold: the vtable symbol may be undefined because the class is missing its key function
tools/clang/unittests/Support/CMakeFiles/ClangSupportTests.dir/TimeProfilerTest.cpp.o:TimeProfilerTest.cpp:function TimeProfilerTest_ConstantEvaluation_Test::TestBody() [clone .localalias]: error: undefined reference to 'clang::PCHContainerOperations::PCHContainerOperations()'
tools/clang/unittests/Support/CMakeFiles/ClangSupportTests.dir/TimeProfilerTest.cpp.o:TimeProfilerTest.cpp:function TimeProfilerTest_ConstantEvaluation_Test::TestBody() [clone .localalias]: error: undefined reference to 'clang::CodeGenOptions::CodeGenOptions()'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
```

## Environment

* Commit ID used for testing: 2ec380b23f2e7058a1732582f890f9b41fd94175
* OS: Fedora 36
* Tested using clean build environment

CMake options:
```
cmake \
    -GNinja \
    -DCMAKE_BUILD_TYPE=Release \
    -DLLVM_USE_LINKER=gold \
    -DLLVM_ENABLE_PROJECTS="clang;llvm;lldb;clang-tools-extra;openmp;compiler-rt" \
    -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi" \
    -DLLVM_TARGETS_TO_BUILD=X86 \
    -DLLVM_ENABLE_RTTI=ON \
    -DLLVM_ENABLE_EH=ON \
    -DLLVM_ENABLE_ASSERTIONS=ON \
    -DBUILD_SHARED_LIBS=ON \
    ../../llvm-project/llvm
```

## Possible Resolution

https://reviews.llvm.org/D136546
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJztV0mT2jgU_jVwUZkCuzFw4MDWHSa9FZBJ5kTJlgxKy5ZHknvJr59Psmm6O6STStVUzWEoyst7T_reorc4Uexp3Aoj_MnSmIq3uvNWd1JfP-95QXRVFKLYkVbcxf0rDZJKSEbSPU_vAiol6I43k7TYrauyVNpuuLHG0YUhGRXSLbeK4H7XiiYvESDU_OvX_rTXb4Xncb_Vn5NLyLulsy9fCH_kaWVpIjl2UtJAKHWIuFeFsNYjhueNAnj6Xh-PcD5ZXi7m0OJ3tyGNptihFcb4E7fWaFwTUbj9WuEUfxJkt8sZroUKDM9pYUUaiMJyXSojrFAFePfCiAT-sU9gwT3cBHvBGLwefOZaK92K5oxaHliRc9Dgbsd5tJrijp2rojKcBSXVNOfYG9QHLbDAWA3XGbyn1Njg74rKekUujAEnyASXDKhQhUrxjWvIlpx5PWtJqSDmLngVeSlFKmyQQQW716ra7Zv96FPCocdxJ1Yz4Fdjghympyk3piZqzqrCgQS5uuc1rQRX5OKb0-pILRR_THlpA_tUOhLjEgaCXAT3QlvYEzCrnMGm2u0QmQBLtRasWZ-qPOeFfTZacsocgijgXkvrAHxOLWXPJpg6zM6AjAm6K5SBMwy2kg4oy6oidesQT383To5a-vK9QfabO4WkogwBalRujgNik1rkjqAuFCS4iUgwv54vpp8uIIGIBpIh8juFPHO_4LNshbMg2KVHqF88vlf0jp8Lyc2ps9xhwp3bDQ7XrVYZxLSjd9Ky7CgSqN_OkYPGuqR2jwcIPSh95zOFI0Z4kPI-h-d9yviKgrtGjKnhjisSgnqR1I9OdrtzwFu3omNUpxfvhD0pcorr9T_XCulXsFMCl5d_XjUWvGC_tCLw1es3TTlUikPx-9eDB6RTDJAPhxg6DSmy6SlXlSEFyocpaQqFR07LaIJTXGIpnJavfS2BvDO05takFc-e5R3EwcMTj1DTZ5qjgE3WmxlObZVz6Dysza7ZNYxeFsbSwuHDUzPyQyTSlMUJQR3hGUomI5pnXHMsdk2mFQ7u6z6RIWlfIL1SYdBU8delW7KOyznfHfacNPuYpzxRkqBKkIS_gE14SnEGvKgvdq7dNeWVCGTBHX8iB3f_d-L-lr91XoHv7eKeysoXxq2jH8M6xYyAqCEABA06RUvgpCNVSqUvYWjVvxiYF9G4nX0ArkXScH1Tcu1xzbs8r8Fz6P535TGFGL_gxU35woVvaK9dh34m0UbCV1DSYdhKO7Aexi3UP5hiq2Zu8qOfk6unP2NViWnBEUyVuI5HC-ZnPc46p0e7JuH8pLko0BBV4Rr0a-6EoCDkwF7OiZtsfBK7sApvLQl5Gg27SRhlIR90-0PaG0Rhfxhmw1E3GyVnvYyNznqD_nG_m7Vbd86ZwswUxUeGCwcAKp-uKap10djGTyvnjxJRRy-fsjLNnVCrP6tfffO-uHa-e0Ocz64mHxfb6afl5Xy7-et2gX6_qnvGW0nXm7af1ovt5fL642J1GAxOSS2uJ9PLxfZ2dfPHYraB5fNWGDZHZVrXVNxYgpunBj6LAj9QgqZKXuSlYzZVOXBJFL4Htfp0vVleLRoo12ofHx2If6CJ-NHyzWR1sdist5ub2gdY_2UYv4u02SwhdXP9ntDiw09FJuv1YrVZ3lyvT4rWEVl_mKwWc3h8ekqq00HV8Bff-kutviKfmtefn_5bhR7hOsuKGyWrY3uor3trS3_AwnM_SNwL_mA6buuO0q7UzXtR3D-L23zci-O4343iUdxm44iNohFtW2ElH_vq4uKOitKfHoqj-6r6flpzkw3xXxgugSvNSbvScvxaDwxE-yrp4GQc7PzOeuG-H12h7Q_7_ai9Hw96o7OURZj_eRoPejzicdob9NJRSFlE2agtacKlccrinBT8gfgt8AxF22IcdsOw1w2jbv8MJnd6wzQbpaNkMDwbpKM4bp118XUh5LNv2nrsVUqqnQFTClfjn5no0GJXcO8btz-t7F7p8dc8FRjU2x567FX_B2K067c">