The `-Wstrict-aliasing` warning issue was already fixed by someone earlier.
And for the `-Wtautological-constant-out-of-range-compare` (wordy) warning,
I replaced `val <= 4611686018427387903` assertion with `!(val >> 31 >> 31)`
expression. These expressions are equivalent but the latter is defined if
the size_t type is only 32-bits wide. Another way to think about it is that
the expression is checking if any bit after the 61st bit is set.
36933c7f5c