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Removed ptr dereference for explicit ptr::read_unaligned

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This commit is contained in:
Paul Masurel
2018-04-25 19:15:32 +09:00
parent 2e3c9a8878
commit 5637657c2f
1 changed files with 6 additions and 3 deletions
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9
src/termdict/term_info_store.rs
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@@ -6,8 +6,8 @@ use common::{BinarySerializable, FixedSize};
use directory::ReadOnlySource;
use postings::TermInfo;
use std::cmp;
use std::io;
use std::io::{Read, Write};
use std::ptr;
use std::io::{self, Read, Write};
use termdict::TermOrdinal;
const BLOCK_LEN: usize = 256;
@@ -92,7 +92,10 @@ fn extract_bits(data: &[u8], addr_bits: usize, num_bits: u8) -> u64 {
assert!(num_bits <= 56);
let addr_byte = addr_bits / 8;
let bit_shift = (addr_bits % 8) as u64;
let val_unshifted_unmasked: u64 = unsafe { *(data[addr_byte..].as_ptr() as *const u64) };
let val_unshifted_unmasked: u64 = unsafe {
let addr = data.as_ptr().offset(addr_byte as isize) as *const u64;
ptr::read_unaligned(addr)
};
let val_shifted_unmasked = val_unshifted_unmasked >> bit_shift;
let mask = (1u64 << u64::from(num_bits)) - 1;
val_shifted_unmasked & mask