[clang] [llvm] [ADT] Deprecate variadic `StringSwitch::CasesLower`. NFC. (PR #166016)

LLVM Continuous Integration via llvm-commits llvm-commits at lists.llvm.org
Sat Nov 1 13:23:48 PDT 2025 

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `fuchsia-x86_64-linux` running on `fuchsia-debian-64-us-central1-b-1` while building `clang,llvm` at step 4 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/11/builds/27154

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

```
Step 4 (annotate) failure: 'python ../llvm-zorg/zorg/buildbot/builders/annotated/fuchsia-linux.py ...' (failure)
...
[2745/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/error_category.cpp.obj
[2746/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/ryu/d2s.cpp.obj
[2747/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/memory.cpp.obj
[2748/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/ryu/d2fixed.cpp.obj
[2749/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/functional.cpp.obj
[2750/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/memory_resource.cpp.obj
[2751/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/stdexcept.cpp.obj
[2752/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/bind.cpp.obj
[2753/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/system_error.cpp.obj
[2754/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/print.cpp.obj
FAILED: libcxx/src/CMakeFiles/cxx_static.dir/print.cpp.obj 
/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/./bin/clang++ --target=aarch64-none-elf -DLIBC_NAMESPACE=__llvm_libc_common_utils -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_SINGLE -D_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY -D_LIBCPP_BUILDING_LIBRARY -D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER -D_LIBCPP_LINK_PTHREAD_LIB -D_LIBCPP_LINK_RT_LIB -D_LIBCPP_REMOVE_TRANSITIVE_INCLUDES -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/src -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/aarch64-unknown-none-elf/c++/v1 -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/c++/v1 -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/cmake/Modules/../../libc -isystem /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/aarch64-unknown-none-elf --target=aarch64-none-elf -Wno-atomic-alignment "-Dvfprintf(stream, format, vlist)=vprintf(format, vlist)" "-Dfprintf(stream, format, ...)=printf(format)" "-Dfputs(string, stream)=puts(string)" -D_LIBCPP_PRINT=1 -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -ffunction-sections -fdata-sections -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/runtimes/runtimes-aarch64-none-elf-bins=../../../../llvm-project -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/= -no-canonical-prefixes -Os -DNDEBUG -faligned-allocation -nostdinc++ -fvisibility-inlines-hidden -fvisibility=hidden -fsized-deallocation -Wall -Wextra -Wnewline-eof -Wshadow -Wwrite-strings -Wno-unused-parameter -Wno-long-long -Werror=return-type -Wextra-semi -Wundef -Wunused-template -Wformat-nonliteral -Wzero-length-array -Wdeprecated-redundant-constexpr-static-def -Wno-nullability-completeness -Wno-user-defined-literals -Wno-covered-switch-default -Wno-suggest-override -Wno-error -fno-exceptions -fno-rtti -fdebug-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/c++/v1=/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/include -nostdlibinc -idirafter/usr/include -std=c++2b -MD -MT libcxx/src/CMakeFiles/cxx_static.dir/print.cpp.obj -MF libcxx/src/CMakeFiles/cxx_static.dir/print.cpp.obj.d -o libcxx/src/CMakeFiles/cxx_static.dir/print.cpp.obj -c /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/src/print.cpp
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/src/print.cpp:24:
/usr/include/unistd.h:202:10: fatal error: 'bits/posix_opt.h' file not found
  202 | #include <bits/posix_opt.h>
      |          ^~~~~~~~~~~~~~~~~~
1 error generated.
[2755/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/hash.cpp.obj
[2756/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/filesystem/filesystem_error.cpp.obj
[2757/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/vector.cpp.obj
[2758/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/charconv.cpp.obj
[2759/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/random_shuffle.cpp.obj
[2760/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/string.cpp.obj
[2761/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/chrono.cpp.obj
FAILED: libcxx/src/CMakeFiles/cxx_static.dir/chrono.cpp.obj 
/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/./bin/clang++ --target=aarch64-none-elf -DLIBC_NAMESPACE=__llvm_libc_common_utils -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_SINGLE -D_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY -D_LIBCPP_BUILDING_LIBRARY -D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER -D_LIBCPP_LINK_PTHREAD_LIB -D_LIBCPP_LINK_RT_LIB -D_LIBCPP_REMOVE_TRANSITIVE_INCLUDES -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/src -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/aarch64-unknown-none-elf/c++/v1 -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/c++/v1 -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/cmake/Modules/../../libc -isystem /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/aarch64-unknown-none-elf --target=aarch64-none-elf -Wno-atomic-alignment "-Dvfprintf(stream, format, vlist)=vprintf(format, vlist)" "-Dfprintf(stream, format, ...)=printf(format)" "-Dfputs(string, stream)=puts(string)" -D_LIBCPP_PRINT=1 -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -ffunction-sections -fdata-sections -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/runtimes/runtimes-aarch64-none-elf-bins=../../../../llvm-project -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/= -no-canonical-prefixes -Os -DNDEBUG -faligned-allocation -nostdinc++ -fvisibility-inlines-hidden -fvisibility=hidden -fsized-deallocation -Wall -Wextra -Wnewline-eof -Wshadow -Wwrite-strings -Wno-unused-parameter -Wno-long-long -Werror=return-type -Wextra-semi -Wundef -Wunused-template -Wformat-nonliteral -Wzero-length-array -Wdeprecated-redundant-constexpr-static-def -Wno-nullability-completeness -Wno-user-defined-literals -Wno-covered-switch-default -Wno-suggest-override -Wno-error -fno-exceptions -fno-rtti -fdebug-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/c++/v1=/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/include -nostdlibinc -idirafter/usr/include -std=c++2b -MD -MT libcxx/src/CMakeFiles/cxx_static.dir/chrono.cpp.obj -MF libcxx/src/CMakeFiles/cxx_static.dir/chrono.cpp.obj.d -o libcxx/src/CMakeFiles/cxx_static.dir/chrono.cpp.obj -c /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/src/chrono.cpp
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/src/chrono.cpp:27:
/usr/include/unistd.h:202:10: fatal error: 'bits/posix_opt.h' file not found
  202 | #include <bits/posix_opt.h>
      |          ^~~~~~~~~~~~~~~~~~
1 error generated.
[2762/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/filesystem/filesystem_clock.cpp.obj
FAILED: libcxx/src/CMakeFiles/cxx_static.dir/filesystem/filesystem_clock.cpp.obj 
/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/./bin/clang++ --target=aarch64-none-elf -DLIBC_NAMESPACE=__llvm_libc_common_utils -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_SINGLE -D_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY -D_LIBCPP_BUILDING_LIBRARY -D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER -D_LIBCPP_LINK_PTHREAD_LIB -D_LIBCPP_LINK_RT_LIB -D_LIBCPP_REMOVE_TRANSITIVE_INCLUDES -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/src -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/aarch64-unknown-none-elf/c++/v1 -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/c++/v1 -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/cmake/Modules/../../libc -isystem /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/aarch64-unknown-none-elf --target=aarch64-none-elf -Wno-atomic-alignment "-Dvfprintf(stream, format, vlist)=vprintf(format, vlist)" "-Dfprintf(stream, format, ...)=printf(format)" "-Dfputs(string, stream)=puts(string)" -D_LIBCPP_PRINT=1 -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -ffunction-sections -fdata-sections -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/runtimes/runtimes-aarch64-none-elf-bins=../../../../llvm-project -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/= -no-canonical-prefixes -Os -DNDEBUG -faligned-allocation -nostdinc++ -fvisibility-inlines-hidden -fvisibility=hidden -fsized-deallocation -Wall -Wextra -Wnewline-eof -Wshadow -Wwrite-strings -Wno-unused-parameter -Wno-long-long -Werror=return-type -Wextra-semi -Wundef -Wunused-template -Wformat-nonliteral -Wzero-length-array -Wdeprecated-redundant-constexpr-static-def -Wno-nullability-completeness -Wno-user-defined-literals -Wno-covered-switch-default -Wno-suggest-override -Wno-error -fno-exceptions -fno-rtti -fdebug-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/c++/v1=/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/include -nostdlibinc -idirafter/usr/include -std=c++2b -MD -MT libcxx/src/CMakeFiles/cxx_static.dir/filesystem/filesystem_clock.cpp.obj -MF libcxx/src/CMakeFiles/cxx_static.dir/filesystem/filesystem_clock.cpp.obj.d -o libcxx/src/CMakeFiles/cxx_static.dir/filesystem/filesystem_clock.cpp.obj -c /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/src/filesystem/filesystem_clock.cpp
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/src/filesystem/filesystem_clock.cpp:28:
/usr/include/unistd.h:202:10: fatal error: 'bits/posix_opt.h' file not found
  202 | #include <bits/posix_opt.h>
      |          ^~~~~~~~~~~~~~~~~~
1 error generated.
[2763/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/filesystem/path.cpp.obj
[2764/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/algorithm.cpp.obj
ninja: build stopped: subcommand failed.
[5137/5236] No patch step for 'runtimes-armv7em-none-eabi'
FAILED: runtimes/runtimes-aarch64-none-elf-stamps/runtimes-aarch64-none-elf-build /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/runtimes/runtimes-aarch64-none-elf-stamps/runtimes-aarch64-none-elf-build 
cd /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/runtimes/runtimes-aarch64-none-elf-bins && /usr/bin/cmake --build .
ninja: build stopped: subcommand failed.
['ninja', '-C', '/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9', 'toolchain-distribution'] exited with return code 1.
@@@STEP_FAILURE@@@
@@@BUILD_STEP check@@@
Step 6 (build) failure: build (failure)
...
[2745/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/error_category.cpp.obj
[2746/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/ryu/d2s.cpp.obj
[2747/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/memory.cpp.obj
[2748/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/ryu/d2fixed.cpp.obj
[2749/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/functional.cpp.obj
[2750/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/memory_resource.cpp.obj
[2751/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/stdexcept.cpp.obj
[2752/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/bind.cpp.obj
[2753/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/system_error.cpp.obj
[2754/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/print.cpp.obj
FAILED: libcxx/src/CMakeFiles/cxx_static.dir/print.cpp.obj 
/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/./bin/clang++ --target=aarch64-none-elf -DLIBC_NAMESPACE=__llvm_libc_common_utils -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_SINGLE -D_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY -D_LIBCPP_BUILDING_LIBRARY -D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER -D_LIBCPP_LINK_PTHREAD_LIB -D_LIBCPP_LINK_RT_LIB -D_LIBCPP_REMOVE_TRANSITIVE_INCLUDES -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/src -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/aarch64-unknown-none-elf/c++/v1 -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/c++/v1 -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/cmake/Modules/../../libc -isystem /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/aarch64-unknown-none-elf --target=aarch64-none-elf -Wno-atomic-alignment "-Dvfprintf(stream, format, vlist)=vprintf(format, vlist)" "-Dfprintf(stream, format, ...)=printf(format)" "-Dfputs(string, stream)=puts(string)" -D_LIBCPP_PRINT=1 -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -ffunction-sections -fdata-sections -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/runtimes/runtimes-aarch64-none-elf-bins=../../../../llvm-project -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/= -no-canonical-prefixes -Os -DNDEBUG -faligned-allocation -nostdinc++ -fvisibility-inlines-hidden -fvisibility=hidden -fsized-deallocation -Wall -Wextra -Wnewline-eof -Wshadow -Wwrite-strings -Wno-unused-parameter -Wno-long-long -Werror=return-type -Wextra-semi -Wundef -Wunused-template -Wformat-nonliteral -Wzero-length-array -Wdeprecated-redundant-constexpr-static-def -Wno-nullability-completeness -Wno-user-defined-literals -Wno-covered-switch-default -Wno-suggest-override -Wno-error -fno-exceptions -fno-rtti -fdebug-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/c++/v1=/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/include -nostdlibinc -idirafter/usr/include -std=c++2b -MD -MT libcxx/src/CMakeFiles/cxx_static.dir/print.cpp.obj -MF libcxx/src/CMakeFiles/cxx_static.dir/print.cpp.obj.d -o libcxx/src/CMakeFiles/cxx_static.dir/print.cpp.obj -c /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/src/print.cpp
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/src/print.cpp:24:
/usr/include/unistd.h:202:10: fatal error: 'bits/posix_opt.h' file not found
  202 | #include <bits/posix_opt.h>
      |          ^~~~~~~~~~~~~~~~~~
1 error generated.
[2755/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/hash.cpp.obj
[2756/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/filesystem/filesystem_error.cpp.obj
[2757/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/vector.cpp.obj
[2758/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/charconv.cpp.obj
[2759/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/random_shuffle.cpp.obj
[2760/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/string.cpp.obj
[2761/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/chrono.cpp.obj
FAILED: libcxx/src/CMakeFiles/cxx_static.dir/chrono.cpp.obj 
/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/./bin/clang++ --target=aarch64-none-elf -DLIBC_NAMESPACE=__llvm_libc_common_utils -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_SINGLE -D_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY -D_LIBCPP_BUILDING_LIBRARY -D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER -D_LIBCPP_LINK_PTHREAD_LIB -D_LIBCPP_LINK_RT_LIB -D_LIBCPP_REMOVE_TRANSITIVE_INCLUDES -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/src -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/aarch64-unknown-none-elf/c++/v1 -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/c++/v1 -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/cmake/Modules/../../libc -isystem /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/aarch64-unknown-none-elf --target=aarch64-none-elf -Wno-atomic-alignment "-Dvfprintf(stream, format, vlist)=vprintf(format, vlist)" "-Dfprintf(stream, format, ...)=printf(format)" "-Dfputs(string, stream)=puts(string)" -D_LIBCPP_PRINT=1 -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -ffunction-sections -fdata-sections -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/runtimes/runtimes-aarch64-none-elf-bins=../../../../llvm-project -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/= -no-canonical-prefixes -Os -DNDEBUG -faligned-allocation -nostdinc++ -fvisibility-inlines-hidden -fvisibility=hidden -fsized-deallocation -Wall -Wextra -Wnewline-eof -Wshadow -Wwrite-strings -Wno-unused-parameter -Wno-long-long -Werror=return-type -Wextra-semi -Wundef -Wunused-template -Wformat-nonliteral -Wzero-length-array -Wdeprecated-redundant-constexpr-static-def -Wno-nullability-completeness -Wno-user-defined-literals -Wno-covered-switch-default -Wno-suggest-override -Wno-error -fno-exceptions -fno-rtti -fdebug-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/c++/v1=/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/include -nostdlibinc -idirafter/usr/include -std=c++2b -MD -MT libcxx/src/CMakeFiles/cxx_static.dir/chrono.cpp.obj -MF libcxx/src/CMakeFiles/cxx_static.dir/chrono.cpp.obj.d -o libcxx/src/CMakeFiles/cxx_static.dir/chrono.cpp.obj -c /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/src/chrono.cpp
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/src/chrono.cpp:27:
/usr/include/unistd.h:202:10: fatal error: 'bits/posix_opt.h' file not found
  202 | #include <bits/posix_opt.h>
      |          ^~~~~~~~~~~~~~~~~~
1 error generated.
[2762/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/filesystem/filesystem_clock.cpp.obj
FAILED: libcxx/src/CMakeFiles/cxx_static.dir/filesystem/filesystem_clock.cpp.obj 
/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/./bin/clang++ --target=aarch64-none-elf -DLIBC_NAMESPACE=__llvm_libc_common_utils -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_SINGLE -D_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY -D_LIBCPP_BUILDING_LIBRARY -D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER -D_LIBCPP_LINK_PTHREAD_LIB -D_LIBCPP_LINK_RT_LIB -D_LIBCPP_REMOVE_TRANSITIVE_INCLUDES -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/src -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/aarch64-unknown-none-elf/c++/v1 -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/c++/v1 -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/cmake/Modules/../../libc -isystem /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/aarch64-unknown-none-elf --target=aarch64-none-elf -Wno-atomic-alignment "-Dvfprintf(stream, format, vlist)=vprintf(format, vlist)" "-Dfprintf(stream, format, ...)=printf(format)" "-Dfputs(string, stream)=puts(string)" -D_LIBCPP_PRINT=1 -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -ffunction-sections -fdata-sections -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/runtimes/runtimes-aarch64-none-elf-bins=../../../../llvm-project -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/= -no-canonical-prefixes -Os -DNDEBUG -faligned-allocation -nostdinc++ -fvisibility-inlines-hidden -fvisibility=hidden -fsized-deallocation -Wall -Wextra -Wnewline-eof -Wshadow -Wwrite-strings -Wno-unused-parameter -Wno-long-long -Werror=return-type -Wextra-semi -Wundef -Wunused-template -Wformat-nonliteral -Wzero-length-array -Wdeprecated-redundant-constexpr-static-def -Wno-nullability-completeness -Wno-user-defined-literals -Wno-covered-switch-default -Wno-suggest-override -Wno-error -fno-exceptions -fno-rtti -fdebug-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/include/c++/v1=/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/include -nostdlibinc -idirafter/usr/include -std=c++2b -MD -MT libcxx/src/CMakeFiles/cxx_static.dir/filesystem/filesystem_clock.cpp.obj -MF libcxx/src/CMakeFiles/cxx_static.dir/filesystem/filesystem_clock.cpp.obj.d -o libcxx/src/CMakeFiles/cxx_static.dir/filesystem/filesystem_clock.cpp.obj -c /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/src/filesystem/filesystem_clock.cpp
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libcxx/src/filesystem/filesystem_clock.cpp:28:
/usr/include/unistd.h:202:10: fatal error: 'bits/posix_opt.h' file not found
  202 | #include <bits/posix_opt.h>
      |          ^~~~~~~~~~~~~~~~~~
1 error generated.
[2763/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/filesystem/path.cpp.obj
[2764/2766] Building CXX object libcxx/src/CMakeFiles/cxx_static.dir/algorithm.cpp.obj
ninja: build stopped: subcommand failed.
[5137/5236] No patch step for 'runtimes-armv7em-none-eabi'
FAILED: runtimes/runtimes-aarch64-none-elf-stamps/runtimes-aarch64-none-elf-build /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/runtimes/runtimes-aarch64-none-elf-stamps/runtimes-aarch64-none-elf-build 
cd /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9/runtimes/runtimes-aarch64-none-elf-bins && /usr/bin/cmake --build .
ninja: build stopped: subcommand failed.
['ninja', '-C', '/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-hvdhrmt9', 'toolchain-distribution'] exited with return code 1.

```

</details>

https://github.com/llvm/llvm-project/pull/166016

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