[U-Boot] Memset 0 in heap initialization?
Dirk Behme
dirk.behme at googlemail.com
Thu Dec 9 17:14:21 CET 2010
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
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