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Provide layout rules for non-POD unions (N2544). #60

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Provide layout rules for non-POD unions (N2544). #60

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8 changes: 6 additions & 2 deletions abi.html
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Expand Up @@ -792,10 +792,10 @@ <h3><a href="#class-types"> 2.4 Non-POD Class Types </a></h3>
<p>
<li> <h5> Allocation of Members Other Than Virtual Bases </h5>
<p>
For each data component D (first the primary base of C, if any, then
Each data component D (first the primary base of C, if any, then
the non-primary, non-virtual direct base classes in declaration order,
then the non-static data members and unnamed bit-fields in declaration
order), allocate as follows:
order) is laid out in order. If C is not a union, allocate as follows:

<ol type=1>

Expand Down Expand Up @@ -913,6 +913,10 @@ <h3><a href="#class-types"> 2.4 Non-POD Class Types </a></h3>

</ol>

<p>
If C is a union, D is placed at offset 0, but dsize(C) and sizeof(C)
are updated as for a non-union member, as described above.

<p>
After all such components have been allocated, set nvalign(C) =
align(C) and nvsize(C) = sizeof(C). The values of nvalign(C) and
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