Without further ado, the following was found: Issue: null wide characters → NUL wide characters? "The B<wcsncpy>() function is the wide-character equivalent of the " "B<strncpy>(3) function. It copies at most I<n> wide characters from the " "wide-character string pointed to by I<src>, including the terminating null " "wide character (L\\[aq]\\e0\\[aq]), to the array pointed to by I<dest>. " "Exactly I<n> wide characters are written at I<dest>. If the length " "I<wcslen(src)> is smaller than I<n>, the remaining wide characters in the " "array pointed to by I<dest> are filled with null wide characters. If the " "length I<wcslen(src)> is greater than or equal to I<n>, the string pointed " "to by I<dest> will not be terminated by a null wide character."