[U-Boot] Memset 0 in heap initialization?

[Dirk Behme <dirk.behme@googlemail.com>]

On 09.12.2010 17:14, Dirk Behme wrote:
>
> In common/dlmalloc.c in the heap initialization mem_malloc_init() [1]
> it looks like the whole heap is initialized with zero:
>
> memset((void *)mem_malloc_start, 0, size);
>
> What's the reason for doing this? I know that the .bss segment has to
> be zeroed at system start up, but why doing this for the heap, too? It
> was my understanding that one could make no assumption about the
> initial content of memory returned by malloc() (?).
>
> Sorry if I miss the obvious ;)
>
> Thanks
>
> Dirk
>
> [1]
> http://git.denx.de/?p=u-boot.git;a=blob;f=common/dlmalloc.c;h=e9bab09b8eac7c0ec4900a3685f15a807b448c31;hb=refs/heads/master#l1529

Any idea regarding this?

Thanks

Dirk