[libcxx-commits] [libcxx] [libc++] Make __thread_hardware_concurrency() an alias to an existing symbol (PR #234575)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,h -- libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.static/tmp.hardware_concurrency_func.pass.cpp libcxx/include/__configuration/availability.h libcxx/include/__thread/hardware_concurrency.h libcxx/include/__thread/thread.h libcxx/src/thread.cpp --diff_from_common_commit
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``````````diff
diff --git a/libcxx/include/__thread/hardware_concurrency.h b/libcxx/include/__thread/hardware_concurrency.h
index 043e3883b..c378cba66 100644
--- a/libcxx/include/__thread/hardware_concurrency.h
+++ b/libcxx/include/__thread/hardware_concurrency.h
@@ -38,14 +38,15 @@ _LIBCPP_BEGIN_EXPLICIT_ABI_ANNOTATIONS
 #    define _LIBCPP_THREAD_ABI_NAMESPACE_LENGTH___1 3
 #    define _LIBCPP_THREAD_ABI_NAMESPACE_LENGTH___2 3
 #    define _LIBCPP_THREAD_ABI_NAMESPACE_LENGTH___ndk1 6
-#    define _LIBCPP_THREAD_ABI_NAMESPACE_LENGTH _LIBCPP_CONCAT(_LIBCPP_THREAD_ABI_NAMESPACE_LENGTH_, _LIBCPP_ABI_NAMESPACE)
+#    define _LIBCPP_THREAD_ABI_NAMESPACE_LENGTH                                                                        \
+      _LIBCPP_CONCAT(_LIBCPP_THREAD_ABI_NAMESPACE_LENGTH_, _LIBCPP_ABI_NAMESPACE)
 #    if _LIBCPP_THREAD_ABI_NAMESPACE_LENGTH == 0
 #      error "Unknown length of _LIBCPP_ABI_NAMESPACE, add it to <__thread/hardware_concurrency.h>"
 #    endif
 #    define _LIBCPP_THREAD_HARDWARE_CONCURRENCY_SYMBOL                                                                 \
       _LIBCPP_TOSTRING(__USER_LABEL_PREFIX__)                                                                          \
       "_ZNSt" _LIBCPP_TOSTRING(_LIBCPP_THREAD_ABI_NAMESPACE_LENGTH) _LIBCPP_THREAD_ABI_NAMESPACE_STR                   \
-      "6thread20hardware_concurrencyEv"
+          "6thread20hardware_concurrencyEv"
 #  endif
 
 [[__nodiscard__]] _LIBCPP_EXPORTED_FROM_ABI unsigned __thread_hardware_concurrency() _NOEXCEPT

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https://github.com/llvm/llvm-project/pull/234575