Thanks for digging into this, but I thing your analysis is wrong. From
"man 3posix memcpy":

"The  memcpy()  function  shall  copy n bytes from the object pointed to by s2 
into the object
pointed to by s1. If copying takes place between objects that overlap, the 
behavior is  undefined."

mod_ssl must use memmove if the buffers may overlap. Of course, the
overlapping buffers may be another bug in mod_ssl. I will look into it.

-- 
Critical bug in memcpy-ssse3-rep.S
https://bugs.launchpad.net/bugs/609290
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