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Add BOOST_ATTRIBUTE_NO_UNIQUE_ADDRESS.

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See https://github.com/boostorg/config/issues/257.
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jzmaddock committed 2019-04-02 18:40:25 +01:00
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doc/macro_reference.qbk
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@@ -1277,6 +1277,8 @@ Usage example:
can be used to disable compiler warnings relating to unused types or variables.]]
[[`BOOST_ATTRIBUTE_NODISCARD`][Expands to `[[nodiscard]]` when this is available -
can be used to create a warning when a type or variable is unused.]]
[[`BOOST_ATTRIBUTE_NO_UNIQUE_ADDRESS`][Expands to `[[no_unique_address]]` when this is available -
can be used to indicate that a non-static data member need not have a unique address (for example empty classes).]]
[[`BOOST_MAY_ALIAS`, `BOOST_NO_MAY_ALIAS`][
`BOOST_MAY_ALIAS` expands to a type attribute that can be used to mark types that may
alias other types. Pointers or references to such marked types can be used to access objects