Re: More questions on realloc - Thanks

On 2005-11-29, S.Tobias <siXtY@xxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> James S. Singleton <pt109@xxxxxxxxxx> wrote:
>> b) Implementing realloc(ptr, size) using malloc(), memcpy() and free()
>> alone, without knowing the size of the memory region pointed to by ptr, is
>> just not possible.
>
> True, in standard C it's not possible.
>
> But note that `malloc' and `free' are redundant and can be implemented
> in terms of `realloc'.

free() can't, unless a size request of 0 does not cause an allocation
[which is not guaranteed.]
.

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