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[QUOTE="Thomas Matthews, post: 1688001"]
As a reminder to the OP, malloc is allowed to allocate more memory than
you requested.  For example, if you requested 10 bytes, but memory is
apportioned into 16-byte chunks, malloc can allocate 16 bytes (one
chunk).

The only trusted information you can get from malloc is whether it
succeeded or not.  You cannot be certain that it allocate exactly the
amount requested.  You cannot guarantee that the same program executed
the same way will return the same pointer (address) by malloc.  If
malloc succeeds, you can safely say that you have an area of at least
the amount of space you requested.

-- 
Thomas Matthews

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