[libc-commits] [libc] [libc] fix EAGAIN being treated as timeout in mutex and rwlock (PR #203574)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- libc/src/__support/threads/linux/futex_utils.h libc/src/__support/threads/raw_mutex.h libc/src/__support/threads/raw_rwlock.h libc/test/integration/src/__support/threads/futex_requeue_test.cpp --diff_from_common_commit
``````````

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``````````diff
diff --git a/libc/src/__support/threads/raw_rwlock.h b/libc/src/__support/threads/raw_rwlock.h
index c0140b213..b08d8e4c0 100644
--- a/libc/src/__support/threads/raw_rwlock.h
+++ b/libc/src/__support/threads/raw_rwlock.h
@@ -400,7 +400,8 @@ private:
       // reached.
       bool timeout_flag = false;
       if (!old.can_acquire<role>(get_preference())) {
-        ErrorOr<int> wait_result = queue.wait<role>(serial_number, timeout, is_pshared);
+        ErrorOr<int> wait_result =
+            queue.wait<role>(serial_number, timeout, is_pshared);
         timeout_flag =
             (!wait_result.has_value() && wait_result.error() == ETIMEDOUT);
       }

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https://github.com/llvm/llvm-project/pull/203574