[libc-commits] [libc] [libc] implement clock_gettime using vDSO (PR #108458)

[LLVM Continuous Integration via libc-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `libc-x86_64-debian-dbg-runtimes-build` running on `libc-x86_64-debian` while building `libc` at step 4 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/78/builds/5887

<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/libc-linux.py ...' (failure)
...
-- Skipping test for 'libc.src.string.bzero_x86_64_opt_avx512' insufficient host cpu features 'AVX512F'
-- Skipping test for 'libc.src.string.memcmp_x86_64_opt_avx512' insufficient host cpu features 'AVX512BW'
-- Skipping test for 'libc.src.string.memcpy_x86_64_opt_avx512' insufficient host cpu features 'AVX512F'
-- Skipping test for 'libc.src.string.memmove_x86_64_opt_avx512' insufficient host cpu features 'AVX512F'
-- Skipping test for 'libc.src.string.memset_x86_64_opt_avx512' insufficient host cpu features 'AVX512F'
-- check-runtimes does nothing.
-- Configuring done
-- Generating done
-- Build files have been written to: /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/build/runtimes/runtimes-bins
[1/13] Building CXX object libc/src/stdio/generic/CMakeFiles/libc.src.stdio.generic.fileno.dir/fileno.cpp.o
FAILED: libc/src/stdio/generic/CMakeFiles/libc.src.stdio.generic.fileno.dir/fileno.cpp.o 
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/build/./bin/clang++ --target=x86_64-unknown-linux-gnu -DLIBC_NAMESPACE=__llvm_libc_19_0_0_git -D_DEBUG -I/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc -isystem /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/build/runtimes/runtimes-bins/libc/include -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 -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -g -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_ADD_NULL_CHECKS -fpie -ffixed-point -fno-builtin -fno-exceptions -fno-lax-vector-conversions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -ftrivial-auto-var-init=pattern -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -Wall -Wextra -Werror -Wconversion -Wno-sign-conversion -Wimplicit-fallthrough -Wwrite-strings -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wstrict-prototypes -Wthread-safety -Wglobal-constructors -DLIBC_COPT_PUBLIC_PACKAGING -DLIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT=100 -DLIBC_COPT_TIMEOUT_ENSURE_MONOTONICITY=1 -std=gnu++17 -MD -MT libc/src/stdio/generic/CMakeFiles/libc.src.stdio.generic.fileno.dir/fileno.cpp.o -MF libc/src/stdio/generic/CMakeFiles/libc.src.stdio.generic.fileno.dir/fileno.cpp.o.d -o libc/src/stdio/generic/CMakeFiles/libc.src.stdio.generic.fileno.dir/fileno.cpp.o -c /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/stdio/generic/fileno.cpp
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/stdio/generic/fileno.cpp:13:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/File/file.h:18:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/threads/mutex.h:41:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/threads/linux/mutex.h:17:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/threads/linux/raw_mutex.h:27:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/time/linux/monotonicity.h:16:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/time/linux/clock_conversion.h:13:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/time/linux/clock_gettime.h:14:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/OSUtil/linux/vdso.h:17:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/OSUtil/linux/x86_64/vdso.h:11:
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/OSUtil/linux/vdso_sym.h:47:53: error: must use 'struct' tag to refer to type 'timezone' in this scope
   47 |     return static_cast<int (*)(timeval *__restrict, timezone *__restrict)>(
      |                                                     ^
      |                                                     struct 
/usr/include/time.h:233:17: note: struct 'timezone' is hidden by a non-type declaration of 'timezone' here
  233 | extern long int timezone;
      |                 ^
1 error generated.
[2/13] Building CXX object libc/src/stdio/linux/CMakeFiles/libc.src.stdio.linux.fdopen.dir/fdopen.cpp.o
FAILED: libc/src/stdio/linux/CMakeFiles/libc.src.stdio.linux.fdopen.dir/fdopen.cpp.o 
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/build/./bin/clang++ --target=x86_64-unknown-linux-gnu -DLIBC_NAMESPACE=__llvm_libc_19_0_0_git -D_DEBUG -I/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc -isystem /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/build/runtimes/runtimes-bins/libc/include -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 -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -g -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_ADD_NULL_CHECKS -fpie -ffixed-point -fno-builtin -fno-exceptions -fno-lax-vector-conversions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -ftrivial-auto-var-init=pattern -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -Wall -Wextra -Werror -Wconversion -Wno-sign-conversion -Wimplicit-fallthrough -Wwrite-strings -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wstrict-prototypes -Wthread-safety -Wglobal-constructors -DLIBC_COPT_PUBLIC_PACKAGING -DLIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT=100 -DLIBC_COPT_TIMEOUT_ENSURE_MONOTONICITY=1 -std=gnu++17 -MD -MT libc/src/stdio/linux/CMakeFiles/libc.src.stdio.linux.fdopen.dir/fdopen.cpp.o -MF libc/src/stdio/linux/CMakeFiles/libc.src.stdio.linux.fdopen.dir/fdopen.cpp.o.d -o libc/src/stdio/linux/CMakeFiles/libc.src.stdio.linux.fdopen.dir/fdopen.cpp.o -c /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/stdio/linux/fdopen.cpp
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/stdio/linux/fdopen.cpp:11:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/File/linux/file.h:10:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/File/file.h:18:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/threads/mutex.h:41:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/threads/linux/mutex.h:17:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/threads/linux/raw_mutex.h:27:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/time/linux/monotonicity.h:16:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/time/linux/clock_conversion.h:13:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/time/linux/clock_gettime.h:14:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/OSUtil/linux/vdso.h:17:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/OSUtil/linux/x86_64/vdso.h:11:
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/OSUtil/linux/vdso_sym.h:47:53: error: must use 'struct' tag to refer to type 'timezone' in this scope
   47 |     return static_cast<int (*)(timeval *__restrict, timezone *__restrict)>(
      |                                                     ^
      |                                                     struct 
/usr/include/time.h:233:17: note: struct 'timezone' is hidden by a non-type declaration of 'timezone' here
Step 6 (build libc) failure: build libc (failure)
...
-- Skipping test for 'libc.src.string.bzero_x86_64_opt_avx512' insufficient host cpu features 'AVX512F'
-- Skipping test for 'libc.src.string.memcmp_x86_64_opt_avx512' insufficient host cpu features 'AVX512BW'
-- Skipping test for 'libc.src.string.memcpy_x86_64_opt_avx512' insufficient host cpu features 'AVX512F'
-- Skipping test for 'libc.src.string.memmove_x86_64_opt_avx512' insufficient host cpu features 'AVX512F'
-- Skipping test for 'libc.src.string.memset_x86_64_opt_avx512' insufficient host cpu features 'AVX512F'
-- check-runtimes does nothing.
-- Configuring done
-- Generating done
-- Build files have been written to: /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/build/runtimes/runtimes-bins
[1/13] Building CXX object libc/src/stdio/generic/CMakeFiles/libc.src.stdio.generic.fileno.dir/fileno.cpp.o
FAILED: libc/src/stdio/generic/CMakeFiles/libc.src.stdio.generic.fileno.dir/fileno.cpp.o 
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/build/./bin/clang++ --target=x86_64-unknown-linux-gnu -DLIBC_NAMESPACE=__llvm_libc_19_0_0_git -D_DEBUG -I/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc -isystem /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/build/runtimes/runtimes-bins/libc/include -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 -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -g -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_ADD_NULL_CHECKS -fpie -ffixed-point -fno-builtin -fno-exceptions -fno-lax-vector-conversions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -ftrivial-auto-var-init=pattern -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -Wall -Wextra -Werror -Wconversion -Wno-sign-conversion -Wimplicit-fallthrough -Wwrite-strings -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wstrict-prototypes -Wthread-safety -Wglobal-constructors -DLIBC_COPT_PUBLIC_PACKAGING -DLIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT=100 -DLIBC_COPT_TIMEOUT_ENSURE_MONOTONICITY=1 -std=gnu++17 -MD -MT libc/src/stdio/generic/CMakeFiles/libc.src.stdio.generic.fileno.dir/fileno.cpp.o -MF libc/src/stdio/generic/CMakeFiles/libc.src.stdio.generic.fileno.dir/fileno.cpp.o.d -o libc/src/stdio/generic/CMakeFiles/libc.src.stdio.generic.fileno.dir/fileno.cpp.o -c /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/stdio/generic/fileno.cpp
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/stdio/generic/fileno.cpp:13:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/File/file.h:18:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/threads/mutex.h:41:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/threads/linux/mutex.h:17:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/threads/linux/raw_mutex.h:27:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/time/linux/monotonicity.h:16:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/time/linux/clock_conversion.h:13:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/time/linux/clock_gettime.h:14:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/OSUtil/linux/vdso.h:17:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/OSUtil/linux/x86_64/vdso.h:11:
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/OSUtil/linux/vdso_sym.h:47:53: error: must use 'struct' tag to refer to type 'timezone' in this scope
   47 |     return static_cast<int (*)(timeval *__restrict, timezone *__restrict)>(
      |                                                     ^
      |                                                     struct 
/usr/include/time.h:233:17: note: struct 'timezone' is hidden by a non-type declaration of 'timezone' here
  233 | extern long int timezone;
      |                 ^
1 error generated.
[2/13] Building CXX object libc/src/stdio/linux/CMakeFiles/libc.src.stdio.linux.fdopen.dir/fdopen.cpp.o
FAILED: libc/src/stdio/linux/CMakeFiles/libc.src.stdio.linux.fdopen.dir/fdopen.cpp.o 
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/build/./bin/clang++ --target=x86_64-unknown-linux-gnu -DLIBC_NAMESPACE=__llvm_libc_19_0_0_git -D_DEBUG -I/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc -isystem /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/build/runtimes/runtimes-bins/libc/include -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 -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -g -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_ADD_NULL_CHECKS -fpie -ffixed-point -fno-builtin -fno-exceptions -fno-lax-vector-conversions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -ftrivial-auto-var-init=pattern -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -Wall -Wextra -Werror -Wconversion -Wno-sign-conversion -Wimplicit-fallthrough -Wwrite-strings -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wstrict-prototypes -Wthread-safety -Wglobal-constructors -DLIBC_COPT_PUBLIC_PACKAGING -DLIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT=100 -DLIBC_COPT_TIMEOUT_ENSURE_MONOTONICITY=1 -std=gnu++17 -MD -MT libc/src/stdio/linux/CMakeFiles/libc.src.stdio.linux.fdopen.dir/fdopen.cpp.o -MF libc/src/stdio/linux/CMakeFiles/libc.src.stdio.linux.fdopen.dir/fdopen.cpp.o.d -o libc/src/stdio/linux/CMakeFiles/libc.src.stdio.linux.fdopen.dir/fdopen.cpp.o -c /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/stdio/linux/fdopen.cpp
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/stdio/linux/fdopen.cpp:11:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/File/linux/file.h:10:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/File/file.h:18:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/threads/mutex.h:41:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/threads/linux/mutex.h:17:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/threads/linux/raw_mutex.h:27:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/time/linux/monotonicity.h:16:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/time/linux/clock_conversion.h:13:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/time/linux/clock_gettime.h:14:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/OSUtil/linux/vdso.h:17:
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/OSUtil/linux/x86_64/vdso.h:11:
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-runtimes-build/llvm-project/libc/src/__support/OSUtil/linux/vdso_sym.h:47:53: error: must use 'struct' tag to refer to type 'timezone' in this scope
   47 |     return static_cast<int (*)(timeval *__restrict, timezone *__restrict)>(
      |                                                     ^
      |                                                     struct 
/usr/include/time.h:233:17: note: struct 'timezone' is hidden by a non-type declaration of 'timezone' here

```

</details>

https://github.com/llvm/llvm-project/pull/108458