bjoernager/rust
bjoernager/rust
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interface: use OnceCell from standard library

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This commit is contained in:
marmeladema 2020-08-30 11:41:36 +01:00
parent eb9e7c357e
commit bd49eec3d7
4 changed files with 5 additions and 7 deletions
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4
compiler/rustc_interface/src/util.rs
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@ -25,6 +25,7 @@ use rustc_span::symbol::{sym, Symbol};
use smallvec::SmallVec;
use std::env;
use std::io::{self, Write};
use std::lazy::SyncOnceCell;
use std::mem;
use std::ops::DerefMut;
use std::path::{Path, PathBuf};
@ -243,8 +244,7 @@ pub fn get_codegen_backend(sess: &Session) -> Box<dyn CodegenBackend> {
// loading, so we leave the code here. It is potentially useful for other tools
// that want to invoke the rustc binary while linking to rustc as well.
pub fn rustc_path<'a>() -> Option<&'a Path> {
static RUSTC_PATH: once_cell::sync::OnceCell<Option<PathBuf>> =
once_cell::sync::OnceCell::new();
static RUSTC_PATH: SyncOnceCell<Option<PathBuf>> = SyncOnceCell::new();
const BIN_PATH: &str = env!("RUSTC_INSTALL_BINDIR");