[PATCH] aout relocs

Andreas Schwab schwab@suse.de
Wed Jul 25 21:31:00 GMT 2007


msnyder@sonic.net writes:

> With hat in hand, are you sure?  bfd_malloc does not check for
> size == 0 before it calls malloc, and malloc(0) is "implementation
> defined" (whatever that may mean).

There are only two ways malloc(0) may behave: either return NULL or a
unique pointer.

> Is memcpy(x,y,0) well defined?

Sure.

> And bfd_bread does this:
>
>   memcpy (ptr, bim->buffer + abfd->where, size);
>
> where both ptr and size might be zero.

That's the only place where something needs to be done (the pointer must
still be valid even if the size is zero).

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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