llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder 
`sanitizer-x86_64-linux-android` running on `sanitizer-buildbot-android` while 
building `clang` at step 2 "annotate".

Full details are available at: 
https://lab.llvm.org/buildbot/#/builders/186/builds/1930

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

```
Step 2 (annotate) failure: 'python 
../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py'
 (failure)
...
[4299/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/PCHContainerOperations.cpp.o
[4300/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ObjectFilePCHContainerReader.cpp.o
[4301/5230] Building CXX object 
tools/clang/lib/ARCMigrate/CMakeFiles/obj.clangARCMigrate.dir/TransZeroOutPropsInDealloc.cpp.o
[4302/5230] Building CXX object 
tools/clang/lib/ARCMigrate/CMakeFiles/obj.clangARCMigrate.dir/TransAutoreleasePool.cpp.o
[4303/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ModuleFile.cpp.o
[4304/5230] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/ChainedDiagnosticConsumer.cpp.o
[4305/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ModuleManager.cpp.o
[4306/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/GlobalModuleIndex.cpp.o
[4307/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/GeneratePCH.cpp.o
[4308/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
FAILED: 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache 
/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm_build0/bin/clang++
 -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE 
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS 
-I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm_build64/tools/clang/lib/Serialization
 
-I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm-project/clang/lib/Serialization
 
-I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm-project/clang/include
 
-I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm_build64/tools/clang/include
 
-I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm_build64/include
 
-I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm-project/llvm/include
 -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 -std=c++17  -fno-exceptions -funwind-tables 
-fno-rtti -UNDEBUG -MD -MT 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -MF 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o.d
 -o 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -c 
/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm-project/clang/lib/Serialization/ASTReader.cpp
/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm-project/clang/lib/Serialization/ASTReader.cpp:7800:11:
 error: enumeration value 'NUM_PREDEF_DECL_IDS' not handled in switch 
[-Werror,-Wswitch]
 7800 |   switch (ID) {
      |           ^~
1 error generated.
[4309/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReaderStmt.cpp.o
[4310/5230] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/ASTMerge.cpp.o
[4311/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTWriterDecl.cpp.o
[4312/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTWriterStmt.cpp.o
[4313/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReaderDecl.cpp.o
[4314/5230] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/ChainedIncludesSource.cpp.o
[4315/5230] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/CreateInvocationFromCommandLine.cpp.o
[4316/5230] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/ASTUnit.cpp.o
[4317/5230] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/CompilerInstance.cpp.o
[4318/5230] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/ASTConsumers.cpp.o
[4319/5230] Building CXX object 
tools/clang/lib/ARCMigrate/CMakeFiles/obj.clangARCMigrate.dir/Transforms.cpp.o
[4320/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTWriter.cpp.o
[4321/5230] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/CompilerInvocation.cpp.o
ninja: build stopped: subcommand failed.

How to reproduce locally: 
https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild

@@@STEP_FAILURE@@@
Step 8 (bootstrap clang) failure: bootstrap clang (failure)
...
[4299/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/PCHContainerOperations.cpp.o
[4300/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ObjectFilePCHContainerReader.cpp.o
[4301/5230] Building CXX object 
tools/clang/lib/ARCMigrate/CMakeFiles/obj.clangARCMigrate.dir/TransZeroOutPropsInDealloc.cpp.o
[4302/5230] Building CXX object 
tools/clang/lib/ARCMigrate/CMakeFiles/obj.clangARCMigrate.dir/TransAutoreleasePool.cpp.o
[4303/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ModuleFile.cpp.o
[4304/5230] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/ChainedDiagnosticConsumer.cpp.o
[4305/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ModuleManager.cpp.o
[4306/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/GlobalModuleIndex.cpp.o
[4307/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/GeneratePCH.cpp.o
[4308/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
FAILED: 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache 
/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm_build0/bin/clang++
 -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE 
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS 
-I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm_build64/tools/clang/lib/Serialization
 
-I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm-project/clang/lib/Serialization
 
-I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm-project/clang/include
 
-I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm_build64/tools/clang/include
 
-I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm_build64/include
 
-I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm-project/llvm/include
 -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 -std=c++17  -fno-exceptions -funwind-tables 
-fno-rtti -UNDEBUG -MD -MT 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -MF 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o.d
 -o 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -c 
/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm-project/clang/lib/Serialization/ASTReader.cpp
/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm-project/clang/lib/Serialization/ASTReader.cpp:7800:11:
 error: enumeration value 'NUM_PREDEF_DECL_IDS' not handled in switch 
[-Werror,-Wswitch]
 7800 |   switch (ID) {
      |           ^~
1 error generated.
[4309/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReaderStmt.cpp.o
[4310/5230] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/ASTMerge.cpp.o
[4311/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTWriterDecl.cpp.o
[4312/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTWriterStmt.cpp.o
[4313/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReaderDecl.cpp.o
[4314/5230] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/ChainedIncludesSource.cpp.o
[4315/5230] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/CreateInvocationFromCommandLine.cpp.o
[4316/5230] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/ASTUnit.cpp.o
[4317/5230] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/CompilerInstance.cpp.o
[4318/5230] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/ASTConsumers.cpp.o
[4319/5230] Building CXX object 
tools/clang/lib/ARCMigrate/CMakeFiles/obj.clangARCMigrate.dir/Transforms.cpp.o
[4320/5230] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTWriter.cpp.o
[4321/5230] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/CompilerInvocation.cpp.o
ninja: build stopped: subcommand failed.

How to reproduce locally: 
https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild
program finished with exit code 2
elapsedTime=1026.285897

```

</details>

https://github.com/llvm/llvm-project/pull/106891
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