+use std::convert::TryFrom;
use std::fs::File;
use std::path::Path;
use rustc::middle::cstore::{EncodedMetadata, MetadataLoader};
-use rustc::session::config;
+use rustc_session::config;
use rustc::ty::TyCtxt;
use rustc_codegen_ssa::METADATA_FILENAME;
use rustc_data_structures::owning_ref::{self, OwningRef};
while let Some(entry_result) = archive.next_entry() {
let mut entry = entry_result.map_err(|e| format!("{:?}", e))?;
if entry.header().identifier() == METADATA_FILENAME.as_bytes() {
- let mut buf = Vec::new();
+ let mut buf = Vec::with_capacity(
+ usize::try_from(entry.header().size())
+ .expect("Rlib metadata file too big to load into memory.")
+ );
::std::io::copy(&mut entry, &mut buf).map_err(|e| format!("{:?}", e))?;
let buf: OwningRef<Vec<u8>, [u8]> = OwningRef::new(buf).into();
return Ok(rustc_erase_owner!(buf.map_owner_box()));