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seek before counting zero bytes

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This commit is contained in:
Yoshiki Matsuda 2022-05-02 16:44:59 +09:00
parent 1ead92dd64
commit e11dd802c1
1 changed files with 2 additions and 1 deletions
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3
compiler/rustc_metadata/src/rmeta/encoder.rs
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@ -40,7 +40,7 @@ use rustc_span::{
use rustc_target::abi::VariantIdx; use rustc_target::abi::VariantIdx;
use std::borrow::Borrow; use std::borrow::Borrow;
use std::hash::Hash; use std::hash::Hash;
use std::io::{Read, Write}; use std::io::{Read, Seek, Write};
use std::iter; use std::iter;
use std::num::NonZeroUsize; use std::num::NonZeroUsize;
use std::path::{Path, PathBuf}; use std::path::{Path, PathBuf};
@ -735,6 +735,7 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> {
if tcx.sess.meta_stats() { if tcx.sess.meta_stats() {
let mut zero_bytes = 0; let mut zero_bytes = 0;
self.opaque.file().seek(std::io::SeekFrom::Start(0)).unwrap();
let file = std::io::BufReader::new(self.opaque.file()); let file = std::io::BufReader::new(self.opaque.file());
for e in file.bytes() { for e in file.bytes() {
if e.unwrap() == 0 { if e.unwrap() == 0 {