[libc-commits] [libc] [libc] Refactor AUXV handling with new auxv.h header library (PR #162326)
LLVM Continuous Integration via libc-commits
libc-commits at lists.llvm.org
Wed Oct 8 07:04:27 PDT 2025
llvm-ci wrote:
LLVM Buildbot has detected a new failure on builder `libc-x86_64-debian-gcc-fullbuild-dbg` running on `libc-x86_64-debian-fullbuild` while building `libc` at step 4 "annotate".
Full details are available at: https://lab.llvm.org/buildbot/#/builders/131/builds/31977
<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)
...
-- For x86_64 builtins preferring x86_64/floatundixf.S to floatundixf.c
-- check-runtimes does nothing.
-- Configuring done
-- Generating done
-- Build files have been written to: /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/build
@@@BUILD_STEP build libc@@@
Running: ninja libc
[1/12] Building CXX object libc/startup/linux/x86_64/CMakeFiles/libc.startup.linux.x86_64.start.dir/start.cpp.o
[2/12] Building CXX object libc/src/stdlib/CMakeFiles/libc.src.stdlib.getenv.dir/getenv.cpp.o
[3/12] Building CXX object libc/src/sys/auxv/linux/CMakeFiles/libc.src.sys.auxv.linux.getauxval.dir/getauxval.cpp.o
FAILED: libc/src/sys/auxv/linux/CMakeFiles/libc.src.sys.auxv.linux.getauxval.dir/getauxval.cpp.o
/usr/bin/g++ -DLIBC_NAMESPACE=__llvm_libc_20_0_0_git -D_DEBUG -I/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc -isystem /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/build/libc/include -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -Wimplicit-fallthrough -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -Wno-pass-failed -fdiagnostics-color -g -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_ADD_NULL_CHECKS -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_DEFAULT -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_PLATFORM -fpie -ffreestanding -DLIBC_FULL_BUILD -isystem/usr/lib/gcc/x86_64-linux-gnu/12//include -nostdinc -idirafter/usr/include -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 -Wdeprecated -fext-numeric-literals -Wno-pedantic -Wimplicit-fallthrough -Wwrite-strings -Wextra-semi -DLIBC_COPT_PUBLIC_PACKAGING -std=gnu++17 -MD -MT libc/src/sys/auxv/linux/CMakeFiles/libc.src.sys.auxv.linux.getauxval.dir/getauxval.cpp.o -MF libc/src/sys/auxv/linux/CMakeFiles/libc.src.sys.auxv.linux.getauxval.dir/getauxval.cpp.o.d -o libc/src/sys/auxv/linux/CMakeFiles/libc.src.sys.auxv.linux.getauxval.dir/getauxval.cpp.o -c /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc/src/sys/auxv/linux/getauxval.cpp
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc/src/sys/auxv/linux/getauxval.cpp:10:
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc/src/__support/OSUtil/linux/auxv.h: In static member function ‘static void __llvm_libc_20_0_0_git::auxv::Vector::fallback_initialize_unsync()’:
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc/src/__support/OSUtil/linux/auxv.h:101:50: error: ‘PR_GET_AUXV’ was not declared in this scope; did you mean ‘PR_SET_MM_AUXV’?
101 | long prctl_ret = syscall_impl<long>(SYS_prctl, PR_GET_AUXV,
| ^~~~~~~~~~~
| PR_SET_MM_AUXV
At global scope:
cc1plus: note: unrecognized command-line option ‘-Wno-pass-failed’ may have been intended to silence earlier diagnostics
[4/12] Building CXX object libc/src/pthread/CMakeFiles/libc.src.pthread.pthread_once.dir/pthread_once.cpp.o
[5/12] Building CXX object libc/src/threads/CMakeFiles/libc.src.threads.call_once.dir/call_once.cpp.o
[6/12] Building CXX object libc/startup/linux/CMakeFiles/libc.startup.linux.do_start.dir/do_start.cpp.o
FAILED: libc/startup/linux/CMakeFiles/libc.startup.linux.do_start.dir/do_start.cpp.o
/usr/bin/g++ -DLIBC_NAMESPACE=__llvm_libc_20_0_0_git -D_DEBUG -I/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc -isystem /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/build/libc/include -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -Wimplicit-fallthrough -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -Wno-pass-failed -fdiagnostics-color -g -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_ADD_NULL_CHECKS -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_DEFAULT -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_PLATFORM -fpie -ffreestanding -DLIBC_FULL_BUILD -isystem/usr/lib/gcc/x86_64-linux-gnu/12//include -nostdinc -idirafter/usr/include -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 -Wdeprecated -fext-numeric-literals -Wno-pedantic -Wimplicit-fallthrough -Wwrite-strings -Wextra-semi -fno-stack-protector -DLIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT=100 -DLIBC_COPT_TIMEOUT_ENSURE_MONOTONICITY=1 -std=gnu++17 -MD -MT libc/startup/linux/CMakeFiles/libc.startup.linux.do_start.dir/do_start.cpp.o -MF libc/startup/linux/CMakeFiles/libc.startup.linux.do_start.dir/do_start.cpp.o.d -o libc/startup/linux/CMakeFiles/libc.startup.linux.do_start.dir/do_start.cpp.o -c /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc/startup/linux/do_start.cpp
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc/startup/linux/do_start.cpp:12:
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc/src/__support/OSUtil/linux/auxv.h: In static member function ‘static void __llvm_libc_20_0_0_git::auxv::Vector::fallback_initialize_unsync()’:
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc/src/__support/OSUtil/linux/auxv.h:101:50: error: ‘PR_GET_AUXV’ was not declared in this scope; did you mean ‘PR_SET_MM_AUXV’?
101 | long prctl_ret = syscall_impl<long>(SYS_prctl, PR_GET_AUXV,
| ^~~~~~~~~~~
| PR_SET_MM_AUXV
At global scope:
cc1plus: note: unrecognized command-line option ‘-Wno-pass-failed’ may have been intended to silence earlier diagnostics
[7/12] Building CXX object libc/src/__support/time/linux/CMakeFiles/libc.src.__support.time.linux.clock_gettime.dir/clock_gettime.cpp.o
[8/12] Building CXX object libc/src/__support/OSUtil/linux/CMakeFiles/libc.src.__support.OSUtil.linux.vdso.dir/vdso.cpp.o
[9/12] Building CXX object libc/src/__support/threads/linux/CMakeFiles/libc.src.__support.threads.linux.thread.dir/thread.cpp.o
[10/12] Building CXX object libc/startup/linux/x86_64/CMakeFiles/libc.startup.linux.x86_64.tls.dir/tls.cpp.o
ninja: build stopped: subcommand failed.
['ninja', 'libc'] exited with return code 1.
The build step threw an exception...
Traceback (most recent call last):
File "/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/build/../llvm-zorg/zorg/buildbot/builders/annotated/libc-linux.py", line 181, in step
yield
File "/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/build/../llvm-zorg/zorg/buildbot/builders/annotated/libc-linux.py", line 143, in main
run_command(['ninja', 'libc'])
File "/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/build/../llvm-zorg/zorg/buildbot/builders/annotated/libc-linux.py", line 196, in run_command
util.report_run_cmd(cmd, cwd=directory)
File "/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-zorg/zorg/buildbot/builders/annotated/util.py", line 49, in report_run_cmd
subprocess.check_call(cmd, shell=shell, *args, **kwargs)
Step 6 (build libc) failure: build libc (failure)
@@@BUILD_STEP build libc@@@
Running: ninja libc
[1/12] Building CXX object libc/startup/linux/x86_64/CMakeFiles/libc.startup.linux.x86_64.start.dir/start.cpp.o
[2/12] Building CXX object libc/src/stdlib/CMakeFiles/libc.src.stdlib.getenv.dir/getenv.cpp.o
[3/12] Building CXX object libc/src/sys/auxv/linux/CMakeFiles/libc.src.sys.auxv.linux.getauxval.dir/getauxval.cpp.o
FAILED: libc/src/sys/auxv/linux/CMakeFiles/libc.src.sys.auxv.linux.getauxval.dir/getauxval.cpp.o
/usr/bin/g++ -DLIBC_NAMESPACE=__llvm_libc_20_0_0_git -D_DEBUG -I/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc -isystem /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/build/libc/include -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -Wimplicit-fallthrough -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -Wno-pass-failed -fdiagnostics-color -g -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_ADD_NULL_CHECKS -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_DEFAULT -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_PLATFORM -fpie -ffreestanding -DLIBC_FULL_BUILD -isystem/usr/lib/gcc/x86_64-linux-gnu/12//include -nostdinc -idirafter/usr/include -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 -Wdeprecated -fext-numeric-literals -Wno-pedantic -Wimplicit-fallthrough -Wwrite-strings -Wextra-semi -DLIBC_COPT_PUBLIC_PACKAGING -std=gnu++17 -MD -MT libc/src/sys/auxv/linux/CMakeFiles/libc.src.sys.auxv.linux.getauxval.dir/getauxval.cpp.o -MF libc/src/sys/auxv/linux/CMakeFiles/libc.src.sys.auxv.linux.getauxval.dir/getauxval.cpp.o.d -o libc/src/sys/auxv/linux/CMakeFiles/libc.src.sys.auxv.linux.getauxval.dir/getauxval.cpp.o -c /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc/src/sys/auxv/linux/getauxval.cpp
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc/src/sys/auxv/linux/getauxval.cpp:10:
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc/src/__support/OSUtil/linux/auxv.h: In static member function ‘static void __llvm_libc_20_0_0_git::auxv::Vector::fallback_initialize_unsync()’:
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc/src/__support/OSUtil/linux/auxv.h:101:50: error: ‘PR_GET_AUXV’ was not declared in this scope; did you mean ‘PR_SET_MM_AUXV’?
101 | long prctl_ret = syscall_impl<long>(SYS_prctl, PR_GET_AUXV,
| ^~~~~~~~~~~
| PR_SET_MM_AUXV
At global scope:
cc1plus: note: unrecognized command-line option ‘-Wno-pass-failed’ may have been intended to silence earlier diagnostics
[4/12] Building CXX object libc/src/pthread/CMakeFiles/libc.src.pthread.pthread_once.dir/pthread_once.cpp.o
[5/12] Building CXX object libc/src/threads/CMakeFiles/libc.src.threads.call_once.dir/call_once.cpp.o
[6/12] Building CXX object libc/startup/linux/CMakeFiles/libc.startup.linux.do_start.dir/do_start.cpp.o
FAILED: libc/startup/linux/CMakeFiles/libc.startup.linux.do_start.dir/do_start.cpp.o
/usr/bin/g++ -DLIBC_NAMESPACE=__llvm_libc_20_0_0_git -D_DEBUG -I/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc -isystem /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/build/libc/include -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -Wimplicit-fallthrough -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -Wno-pass-failed -fdiagnostics-color -g -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_ADD_NULL_CHECKS -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_DEFAULT -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_PLATFORM -fpie -ffreestanding -DLIBC_FULL_BUILD -isystem/usr/lib/gcc/x86_64-linux-gnu/12//include -nostdinc -idirafter/usr/include -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 -Wdeprecated -fext-numeric-literals -Wno-pedantic -Wimplicit-fallthrough -Wwrite-strings -Wextra-semi -fno-stack-protector -DLIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT=100 -DLIBC_COPT_TIMEOUT_ENSURE_MONOTONICITY=1 -std=gnu++17 -MD -MT libc/startup/linux/CMakeFiles/libc.startup.linux.do_start.dir/do_start.cpp.o -MF libc/startup/linux/CMakeFiles/libc.startup.linux.do_start.dir/do_start.cpp.o.d -o libc/startup/linux/CMakeFiles/libc.startup.linux.do_start.dir/do_start.cpp.o -c /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc/startup/linux/do_start.cpp
In file included from /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc/startup/linux/do_start.cpp:12:
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc/src/__support/OSUtil/linux/auxv.h: In static member function ‘static void __llvm_libc_20_0_0_git::auxv::Vector::fallback_initialize_unsync()’:
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-project/libc/src/__support/OSUtil/linux/auxv.h:101:50: error: ‘PR_GET_AUXV’ was not declared in this scope; did you mean ‘PR_SET_MM_AUXV’?
101 | long prctl_ret = syscall_impl<long>(SYS_prctl, PR_GET_AUXV,
| ^~~~~~~~~~~
| PR_SET_MM_AUXV
At global scope:
cc1plus: note: unrecognized command-line option ‘-Wno-pass-failed’ may have been intended to silence earlier diagnostics
[7/12] Building CXX object libc/src/__support/time/linux/CMakeFiles/libc.src.__support.time.linux.clock_gettime.dir/clock_gettime.cpp.o
[8/12] Building CXX object libc/src/__support/OSUtil/linux/CMakeFiles/libc.src.__support.OSUtil.linux.vdso.dir/vdso.cpp.o
[9/12] Building CXX object libc/src/__support/threads/linux/CMakeFiles/libc.src.__support.threads.linux.thread.dir/thread.cpp.o
[10/12] Building CXX object libc/startup/linux/x86_64/CMakeFiles/libc.startup.linux.x86_64.tls.dir/tls.cpp.o
ninja: build stopped: subcommand failed.
['ninja', 'libc'] exited with return code 1.
The build step threw an exception...
Traceback (most recent call last):
File "/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/build/../llvm-zorg/zorg/buildbot/builders/annotated/libc-linux.py", line 181, in step
yield
File "/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/build/../llvm-zorg/zorg/buildbot/builders/annotated/libc-linux.py", line 143, in main
run_command(['ninja', 'libc'])
File "/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/build/../llvm-zorg/zorg/buildbot/builders/annotated/libc-linux.py", line 196, in run_command
util.report_run_cmd(cmd, cwd=directory)
File "/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian-fullbuild/libc-x86_64-debian-gcc-fullbuild-dbg/llvm-zorg/zorg/buildbot/builders/annotated/util.py", line 49, in report_run_cmd
subprocess.check_call(cmd, shell=shell, *args, **kwargs)
File "/usr/lib/python3.11/subprocess.py", line 413, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['ninja', 'libc']' returned non-zero exit status 1.
```
</details>
https://github.com/llvm/llvm-project/pull/162326
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