tttt6666ccccooooppppyyyy____aaaattttttttrrrr copies a set of attributes specified by aaaattttttttrrrr1111 into the
buffers controlled by aaaattttttttrrrr2222. (Both aaaattttttttrrrr1111 and aaaattttttttrrrr2222 should have already
been allocated by _t_6_a_l_l_o_c__b_l_k).
See man pages for tttt6666aaaalllllllloooocccc____bbbbllllkkkk ((((3333NNNN)))) for more details.
Also note that tttt6666ccccooooppppyyyy____aaaattttttttrrrr((((ssssrrrrcccc,,,, ddddeeeesssstttt)))) is equivalent to tttt6666ccccooooppppyyyy____bbbbllllkkkk((((ssssrrrrcccc,,,,
ddddeeeesssstttt)))).
FFFFAAAAIIIILLLLUUUURRRREEEE
_t_6_c_o_p_y__a_t_t_r will silently fail if the destination tttt6666aaaattttttttrrrr____tttt does not have
the same set of allocated attributes as the source tttt6666aaaattttttttrrrr____tttt, and if
either of the tttt6666aaaattttttttrrrr____tttt attributes are NULL.