Re: [U-Boot] [PATCH] memmove_wd: Allow overlapping memory area

Dear Alexander Stein,

In message 1279701826-20083-1-git-send-email-alexander.stein@systec-electronic.com you wrote:

Signed-off-by: Alexander Stein alexander.stein@systec-electronic.com

common/image.c | 11 ++++++++--- 1 files changed, 8 insertions(+), 3 deletions(-)

Why would this be needed? Do you have an error scenario?

• if (to <= from)
  

• {
  

• 	memmove (to, from, tail);
  

• 	to += tail;
  

• 	from += tail;
  

• } else {
  

• 	memmove (to + len - tail, from + len - tail, tail);
  

In which way is this supposed to allow overlapping memory areas?

Best regards,

Wolfgang Denk