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Specify reentrancy gurantees of Once::call_once #53024

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Aug 4, 2018
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Specify reentrancy gurantees of Once::call_once #53024

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Specify reentrancy gurantees of `Once::call_once`
matklad Aug 3, 2018
a2f9aaf
Fix trailnig WS
matklad Aug 3, 2018
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4 changes: 4 additions & 0 deletions src/libstd/sync/once.rs
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Expand Up @@ -178,6 +178,10 @@ impl Once {
/// happens-before relation between the closure and code executing after the
/// return).
///
/// If the given closure recusively invokes `call_once` on the same `Once`
/// instance the exact behavior is not specified, allowed outcomes are
/// a panic or a deadlock.
///
/// # Examples
///
/// ```
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