[libc-commits] [libc] [libc] Tag cpp::byte with gnu::may_alias (PR #200462)

[LLVM Continuous Integration via libc-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `libc-aarch64-ubuntu-fullbuild-dbg` running on `libc-aarch64-ubuntu` while building `libc` at step 4 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/71/builds/48982

<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)
...
/usr/bin/ld: warning: cannot create .note.gnu.build-id section, --build-id ignored
[122/129] Running integration test libc.test.integration.src.pthread.pthread_mutex_test
[123/129] Linking CXX executable libc/test/integration/src/pthread/libc.test.integration.src.pthread.pthread_create_test.__build__
/usr/bin/ld: warning: cannot create .note.gnu.build-id section, --build-id ignored
[124/129] Running integration test libc.test.integration.src.__support.threads.cndvar_test
[125/129] Running integration test libc.test.integration.src.pthread.pthread_create_test
[126/129] Linking CXX executable libc/test/integration/src/pthread/libc.test.integration.src.pthread.pthread_rwlock_test.__build__
/usr/bin/ld: warning: cannot create .note.gnu.build-id section, --build-id ignored
[127/129] Running integration test libc.test.integration.src.pthread.pthread_cond_test
[128/129] Running integration test libc.test.integration.src.pthread.pthread_rwlock_test
command timed out: 1200 seconds without output running [b'python', b'../llvm-zorg/zorg/buildbot/builders/annotated/libc-linux.py', b'--debug'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=1363.969109
Step 9 (libc-integration-tests) failure: libc-integration-tests (failure)
...
/usr/bin/ld: warning: cannot create .note.gnu.build-id section, --build-id ignored
[96/129] Linking CXX static library libc/test/integration/src/pthread/liblibc.test.integration.src.pthread.pthread_equal_test.libc.a
[97/129] Linking CXX static library libc/test/integration/src/pthread/liblibc.test.integration.src.pthread.pthread_name_test.libc.a
[98/129] Running integration test libc.test.integration.src.pthread.pthread_join_test
[99/129] Linking CXX executable libc/test/integration/src/unistd/libc.test.integration.src.unistd.getcwd_test.__build__
/usr/bin/ld: warning: cannot create .note.gnu.build-id section, --build-id ignored
[100/129] Running integration test libc.test.integration.src.unistd.getcwd_test
[101/129] Linking CXX static library libc/test/integration/src/pthread/liblibc.test.integration.src.pthread.pthread_once_test.libc.a
[102/129] Linking CXX static library libc/test/integration/src/pthread/liblibc.test.integration.src.pthread.pthread_exit_test.libc.a
[103/129] Linking CXX static library libc/test/integration/src/pthread/liblibc.test.integration.src.pthread.pthread_rwlock_test.libc.a
[104/129] Linking CXX static library libc/test/integration/src/pthread/liblibc.test.integration.src.pthread.pthread_mutex_test.libc.a
[105/129] Linking CXX executable libc/test/integration/src/stdio/libc.test.integration.src.stdio.sprintf_size_test.__build__
/usr/bin/ld: warning: cannot create .note.gnu.build-id section, --build-id ignored
[106/129] Running integration test libc.test.integration.src.stdio.sprintf_size_test
[107/129] Linking CXX executable libc/test/integration/src/spawn/libc.test.integration.src.spawn.posix_spawn_test.__build__
/usr/bin/ld: warning: cannot create .note.gnu.build-id section, --build-id ignored
[108/129] Linking CXX static library libc/test/integration/src/pthread/liblibc.test.integration.src.pthread.pthread_create_test.libc.a
[109/129] Running integration test libc.test.integration.src.spawn.posix_spawn_test
[110/129] Linking CXX executable libc/test/integration/src/pthread/libc.test.integration.src.pthread.pthread_equal_test.__build__
/usr/bin/ld: warning: cannot create .note.gnu.build-id section, --build-id ignored
[111/129] Running integration test libc.test.integration.src.pthread.pthread_equal_test
[112/129] Linking CXX executable libc/test/integration/src/pthread/libc.test.integration.src.pthread.pthread_name_test.__build__
/usr/bin/ld: warning: cannot create .note.gnu.build-id section, --build-id ignored
[113/129] Running integration test libc.test.integration.src.pthread.pthread_name_test
[114/129] Linking CXX executable libc/test/integration/src/pthread/libc.test.integration.src.pthread.pthread_cond_test.__build__
/usr/bin/ld: warning: cannot create .note.gnu.build-id section, --build-id ignored
[115/129] Running integration test libc.test.integration.src.pthread.pthread_test
[116/129] Running integration test libc.test.integration.src.__support.threads.futex_requeue_test
[117/129] Linking CXX executable libc/test/integration/src/pthread/libc.test.integration.src.pthread.pthread_once_test.__build__
/usr/bin/ld: warning: cannot create .note.gnu.build-id section, --build-id ignored
[118/129] Running integration test libc.test.integration.src.pthread.pthread_once_test
[119/129] Linking CXX executable libc/test/integration/src/pthread/libc.test.integration.src.pthread.pthread_exit_test.__build__
/usr/bin/ld: warning: cannot create .note.gnu.build-id section, --build-id ignored
[120/129] Running integration test libc.test.integration.src.pthread.pthread_exit_test
[121/129] Linking CXX executable libc/test/integration/src/pthread/libc.test.integration.src.pthread.pthread_mutex_test.__build__
/usr/bin/ld: warning: cannot create .note.gnu.build-id section, --build-id ignored
[122/129] Running integration test libc.test.integration.src.pthread.pthread_mutex_test
[123/129] Linking CXX executable libc/test/integration/src/pthread/libc.test.integration.src.pthread.pthread_create_test.__build__
/usr/bin/ld: warning: cannot create .note.gnu.build-id section, --build-id ignored
[124/129] Running integration test libc.test.integration.src.__support.threads.cndvar_test
[125/129] Running integration test libc.test.integration.src.pthread.pthread_create_test
[126/129] Linking CXX executable libc/test/integration/src/pthread/libc.test.integration.src.pthread.pthread_rwlock_test.__build__
/usr/bin/ld: warning: cannot create .note.gnu.build-id section, --build-id ignored
[127/129] Running integration test libc.test.integration.src.pthread.pthread_cond_test
[128/129] Running integration test libc.test.integration.src.pthread.pthread_rwlock_test

command timed out: 1200 seconds without output running [b'python', b'../llvm-zorg/zorg/buildbot/builders/annotated/libc-linux.py', b'--debug'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=1363.969109

```

</details>

https://github.com/llvm/llvm-project/pull/200462