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[core] Ray status doesn't work for all ostream-printable objects #51695

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[core] Ray status doesn't work for all ostream-printable objects#51695
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chuang0221
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P2Important issue, but not time-criticalbugSomething that is supposed to be working; but isn'tcommunity-backlogcoreIssues that should be addressed in Ray CoreenhancementRequest for new feature and/or capabilitygood-first-issueGreat starter issue for someone just starting to contribute to Rayhelp-wanted
@dentiny

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@dentiny
dentiny
opened on Mar 25, 2025

What happened + What you expected to happen

ray::Status supports appending new content into the internal message string, but it doesn't supports all types.

ray/src/ray/common/status.h

Lines 330 to 334 in c796717

template <typename... T>
Status &operator<<(T &&...msg) {
absl::StrAppend(&state_->msg, std::forward<T>(msg)...);
return *this;
}

One concrete example might be directory dentry: https://en.cppreference.com/w/cpp/filesystem/directory_entry

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P2Important issue, but not time-criticalbugSomething that is supposed to be working; but isn'tcommunity-backlogcoreIssues that should be addressed in Ray CoreenhancementRequest for new feature and/or capabilitygood-first-issueGreat starter issue for someone just starting to contribute to Rayhelp-wanted

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