Function nginx::pcre16_copy_substring

pub unsafe extern "C" fn pcre16_copy_substring(
    arg1: *const c_ushort, 
    arg2: *mut c_int, 
    arg3: c_int, 
    arg4: c_int, 
    arg5: *mut c_ushort, 
    arg6: c_int
) -> c_int