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### 1472. Incorrect semantics of `atomic_init`

Section: 33.5.8.2 [atomics.types.operations] Status: NAD Editorial Submitter: INCITS Opened: 2010-08-25 Last modified: 2016-01-28

Priority: Not Prioritized

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Discussion:

Addresses US-171

As of 33.5.8.2 [atomics.types.operations] p. 7:

The `atomic_init` definition "Non-atomically assigns the value" is not quite correct, as the `atomic_init` purpose is initialization.

Proposed resolution:

Change 33.5.8.2 [atomics.types.operations] p. 7 as indicated:

>     void atomic_init(volatile A *object, C desired);
>     void atomic_init(A *object, C desired);

> > 7 Effects: Non-atomically assigns the value desired to `*object` Initializes `*object` with value `desired`. Concurrent access from another thread, even via an atomic operation, constitutes a data race. [Note: This function should only be applied to objects that have been default constructed. These semantics ensure compatibility with `C`. — end note]