[PATCH] realloc: Return unchanged if request is within usable size

[Andreas Schwab]

On Nov 28 2022, Siddhesh Poyarekar via Libc-alpha wrote:

> Hmm, I suppose something like this then?
>
>     for (...)
>       {
>         ...
>         volatile uintptr_t oldp = p;
>         void *new_p = realloc (p, newsz)
>         if (new_p != oldp)
>           ...

You'll need some casts, but I don't think the volatile is needed.

-- 
Andreas Schwab, schwab@linux-m68k.org
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