[Qt-interest] On overriding qMalloc in QVector

[Thiago Macieira]

Em Quinta-feira 22 Outubro 2009, às 16:40:07, você escreveu:
> We need to pass the alignment requirements from the compiler to the
>  allocator  function. So we need a qMallocAligned function.

Unfortunately, that won't work.

I managed to get an aligned QVector data, but the change is not data-
compatible.

If I put this change in Qt 4.6, then we could have newly-compiled code 
allocating aligned buffers passing a QVector to code that wasn't recompiled. If 
that older code tried to free the vector, the application would most likely 
crash.

I think I can safely make the change for QMap and QHash though. QList isn't 
affected by this issue, while QLinkedList cannot be solved properly (it uses 
new on QLinkedListNode<T>).

-- 
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
  Senior Product Manager - Nokia, Qt Development Frameworks
      PGP/GPG: 0x6EF45358; fingerprint:
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