llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-ppc64le-rhel` 
running on `ppc64le-clang-rhel-test` while building `clang,llvm` at step 7 
"test-build-unified-tree-check-all".

Full details are available at: 
https://lab.llvm.org/buildbot/#/builders/145/builds/6149

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 7 (test-build-unified-tree-check-all) failure: test (failure)
...
9.132 [1002/48/178] Linking CXX executable 
tools/clang/tools/extra/unittests/clang-doc/ClangDocTests
9.146 [1001/48/179] Building CXX object 
tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/PreambleTests.cpp.o
9.170 [1000/48/180] Linking CXX executable 
tools/clang/tools/extra/unittests/clang-move/ClangMoveTests
9.182 [999/48/181] Building CXX object 
tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/PrerequisiteModulesTest.cpp.o
9.219 [998/48/182] Linking CXX executable 
tools/clang/unittests/Analysis/ClangAnalysisTests
9.225 [997/48/183] Building CXX object 
tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/CodeCompleteTests.cpp.o
9.228 [996/48/184] Building CXX object 
tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/tweaks/ExpandMacroTests.cpp.o
9.234 [995/48/185] Building CXX object 
tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/InlayHintTests.cpp.o
9.236 [994/48/186] Linking CXX executable 
tools/clang/tools/extra/unittests/clang-query/ClangQueryTests
9.285 [993/48/187] Linking CXX executable tools/clang/unittests/Parse/ParseTests
FAILED: tools/clang/unittests/Parse/ParseTests 
: && /home/buildbots/llvm-external-buildbots/clang.19.1.7/bin/clang++ 
--gcc-toolchain=/gcc-toolchain/usr -fPIC -fno-semantic-interposition 
-fvisibility-inlines-hidden -Werror -Werror=date-time 
-Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter 
-Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic 
-Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough 
-Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor 
-Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion 
-Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color 
-ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual 
-Wno-nested-anon-types -O3 -DNDEBUG -Wl,--color-diagnostics     
-Wl,--gc-sections  -Xlinker 
--dependency-file=tools/clang/unittests/Parse/CMakeFiles/ParseTests.dir/link.d 
tools/clang/unittests/Parse/CMakeFiles/ParseTests.dir/ParseHLSLRootSignatureTest.cpp.o
 -o tools/clang/unittests/Parse/ParseTests  
-Wl,-rpath,/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/build/lib
  lib/libllvm_gtest_main.so.21.0git  -lpthread  lib/libclangTooling.so.21.0git  
lib/libLLVMTestingAnnotations.so.21.0git  lib/libLLVMTestingSupport.so.21.0git  
lib/libclangTesting.so.21.0git  lib/libllvm_gtest.so.21.0git  
lib/libclangFrontend.so.21.0git  lib/libclangParse.so.21.0git  
lib/libclangSerialization.so.21.0git  lib/libclangSema.so.21.0git  
lib/libclangASTMatchers.so.21.0git  lib/libclangAST.so.21.0git  
lib/libclangBasic.so.21.0git  lib/libLLVMSupport.so.21.0git  
-Wl,-rpath-link,/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/build/lib
 && :
ld.lld: error: undefined symbol: clang::Preprocessor::~Preprocessor()
>>> referenced by ParseHLSLRootSignatureTest.cpp
>>>               
>>> tools/clang/unittests/Parse/CMakeFiles/ParseTests.dir/ParseHLSLRootSignatureTest.cpp.o:((anonymous
>>>  
>>> namespace)::ParseHLSLRootSignatureTest_ValidParseEmptyTest_Test::TestBody())
>>> referenced by ParseHLSLRootSignatureTest.cpp
>>>               
>>> tools/clang/unittests/Parse/CMakeFiles/ParseTests.dir/ParseHLSLRootSignatureTest.cpp.o:((anonymous
>>>  
>>> namespace)::ParseHLSLRootSignatureTest_ValidParseDTClausesTest_Test::TestBody())
>>> referenced by ParseHLSLRootSignatureTest.cpp
>>>               
>>> tools/clang/unittests/Parse/CMakeFiles/ParseTests.dir/ParseHLSLRootSignatureTest.cpp.o:((anonymous
>>>  
>>> namespace)::ParseHLSLRootSignatureTest_InvalidParseUnexpectedTokenTest_Test::TestBody())
>>> referenced 2 more times

ld.lld: error: undefined symbol: clang::ModuleLoader::~ModuleLoader()
>>> referenced by ParseHLSLRootSignatureTest.cpp
>>>               
>>> tools/clang/unittests/Parse/CMakeFiles/ParseTests.dir/ParseHLSLRootSignatureTest.cpp.o:((anonymous
>>>  
>>> namespace)::ParseHLSLRootSignatureTest_ValidParseEmptyTest_Test::TestBody())
>>> referenced by ParseHLSLRootSignatureTest.cpp
>>>               
>>> tools/clang/unittests/Parse/CMakeFiles/ParseTests.dir/ParseHLSLRootSignatureTest.cpp.o:(clang::TrivialModuleLoader::~TrivialModuleLoader())
>>> referenced by ParseHLSLRootSignatureTest.cpp
>>>               
>>> tools/clang/unittests/Parse/CMakeFiles/ParseTests.dir/ParseHLSLRootSignatureTest.cpp.o:((anonymous
>>>  
>>> namespace)::ParseHLSLRootSignatureTest_ValidParseDTClausesTest_Test::TestBody())
>>> referenced 4 more times

ld.lld: error: undefined symbol: 
clang::HeaderSearch::HeaderSearch(clang::HeaderSearchOptions const&, 
clang::SourceManager&, clang::DiagnosticsEngine&, clang::LangOptions const&, 
clang::TargetInfo const*)
>>> referenced by ParseHLSLRootSignatureTest.cpp
>>>               
>>> tools/clang/unittests/Parse/CMakeFiles/ParseTests.dir/ParseHLSLRootSignatureTest.cpp.o:((anonymous
>>>  namespace)::ParseHLSLRootSignatureTest::createPP(llvm::StringRef, 
>>> clang::TrivialModuleLoader&))

ld.lld: error: undefined symbol: 
clang::Preprocessor::Preprocessor(std::shared_ptr<clang::PreprocessorOptions 
const>, clang::DiagnosticsEngine&, clang::LangOptions const&, 
clang::SourceManager&, clang::HeaderSearch&, clang::ModuleLoader&, 
clang::IdentifierInfoLookup*, bool, clang::TranslationUnitKind)
>>> referenced by ParseHLSLRootSignatureTest.cpp
>>>               
>>> tools/clang/unittests/Parse/CMakeFiles/ParseTests.dir/ParseHLSLRootSignatureTest.cpp.o:((anonymous
>>>  namespace)::ParseHLSLRootSignatureTest::createPP(llvm::StringRef, 
>>> clang::TrivialModuleLoader&))

ld.lld: error: undefined symbol: 
clang::Preprocessor::Initialize(clang::TargetInfo const&, clang::TargetInfo 
const*)
>>> referenced by ParseHLSLRootSignatureTest.cpp
>>>               
>>> tools/clang/unittests/Parse/CMakeFiles/ParseTests.dir/ParseHLSLRootSignatureTest.cpp.o:((anonymous
>>>  namespace)::ParseHLSLRootSignatureTest::createPP(llvm::StringRef, 
>>> clang::TrivialModuleLoader&))

ld.lld: error: undefined symbol: clang::Preprocessor::EnterMainSourceFile()
>>> referenced by ParseHLSLRootSignatureTest.cpp
>>>               
>>> tools/clang/unittests/Parse/CMakeFiles/ParseTests.dir/ParseHLSLRootSignatureTest.cpp.o:((anonymous
>>>  namespace)::ParseHLSLRootSignatureTest::createPP(llvm::StringRef, 
>>> clang::TrivialModuleLoader&))

ld.lld: error: undefined symbol: clang::ModuleMap::~ModuleMap()
>>> referenced by ParseHLSLRootSignatureTest.cpp
>>>               
>>> tools/clang/unittests/Parse/CMakeFiles/ParseTests.dir/ParseHLSLRootSignatureTest.cpp.o:(clang::HeaderSearch::~HeaderSearch())

```

</details>

https://github.com/llvm/llvm-project/pull/133302
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