RFC: Handling realloc(0)

[Mike Frysinger]

On 30 Apr 2021 18:02, Nick Clifton via Binutils wrote:
>   A recent binutils bug report (PR 27797) has brought to light the fact
>   that the behaviour of realloc(0) is not well defined.  So I am
>   proposing the attached patch to change the behaviour of the
>   bfd_realloc and bfd_realloc_or_free functions.  With this patch
>   applied:
> 
>     bfd_realloc (NULL, 0)          will return bfd_malloc (1)
>     bfd_realloc (ptr, 0)           will return ptr
>     bfd_realloc_of_free (NULL, 0)  will return NULL (and no error set)
>     bfd_realloc_or_free (ptr, 0)   will return NULL and ptr will have been freed.
> 
>   What do people think ?  Any objections ?

afaik, this matches the general GNU behavior (C library & gnulib), so lgtm
-mike