They have got so good at recognising hand written memcpy implementations and replacing with builtins that it is almost becoming impossible to actually write a l

They have got so good at recognising hand written memcpy implementations and replacing with builtins that it is almost becoming impossible to actually write a libc any more as memcpy gets replaced with a pointer to memcpy [1]. [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56888 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56888