I could find an answer to this question in the draft std:

C++ has operators new and delete, type-safe versions of the old C functions
malloc and free.  Is there going to be a replacement for realloc?

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ivin@franklin.CS.Berkeley.EDU (Ilya Vinarsky) wrote:
>
>I could find an answer to this question in the draft std:
>
>C++ has operators new and delete, type-safe versions of the old C functions
>malloc and free.  Is there going to be a replacement for realloc?

     The easiest way to get this facility is
NOT to use 'new' and 'delete'; use the STL container 'vector'
instead. It reallocates automatically when you insert things.

     A closer approximation to the primitive 'realloc'
can be obtained using various STL primitives like
'uninitialised_copy' and managing your own allocations:
have a look at the source code for vector to see how it works.


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