Re: [Boost-users] is read/write mutex example correct

From: Anthony Williams (anthony_w.geo_at_[hidden])
Date: 2008-05-14 10:14:02

Igor R. <igor_rubinov_at_[hidden]> writes:

>> > The problem with this code is that you are returning a reference > to data that might be immediately invalidated. A push_back via > another thread can cause the referenced memory to no longer be valid.
> Does push_back() really invalidate iterators to *previous* vector elements?!

Yes: it might have to allocate a new chunk of memory for the vector, in which
case it will have to move all the existing elements to the new memory, and
free the old one.

Anthony
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