Proposed addition of malloc_size_np()

[Poul-Henning Kamp]

In message <20060325045149.GA7001 at funkthat.com>, John-Mark Gurney writes:

>a) the idea of using memory beyond what you've allocated is bad...

Not if you get permission.

>b) it should return the maximum size you can realloc to w/o a copy
>of the memory...  and then the way you use the extra memory is to
>call realloc on the buffer to the value returned by malloc_size_np..

This is not an easy number to return, and it is dynamic.

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