Critical Issue
Description
When optimization is turned on (-O1
or higher),
if you use memcpy()
and the source pointer is aligned
to a 32-bit boundary, the compiler implements memcpy()
with word-oriented
instructions as part of the optimization process. This optimization technique
causes unexpected results in your software if memcpy()
is
used on a misaligned address.
Resolution
Take steps to ensure that an optimized implementation of memcpy()
is
called only with aligned data pointers.