Auto merge of #6296 - flip1995:rustup, r=flip1995

[rust.git] / src / driver.rs

diff --git a/src/driver.rs b/src/driver.rs
index 47315fa64cd8019cba3c508de3d960a6c50ebcc0..cc71cc66b925b1ebb876fa1793afa57bb570401b 100644 (file)
--- a/src/driver.rs
+++ b/src/driver.rs
@@ -1,4 +1,5 @@
 #![feature(rustc_private)]
+#![feature(once_cell)]
 #![cfg_attr(feature = "deny-warnings", deny(warnings))]
 // warn on lints, that are included in `rust-lang/rust`s bootstrap
 #![warn(rust_2018_idioms, unused_lifetimes)]
@@ -17,9 +18,9 @@
 use rustc_middle::ty::TyCtxt;
 use rustc_tools_util::VersionInfo;
 
-use lazy_static::lazy_static;
 use std::borrow::Cow;
 use std::env;
+use std::lazy::SyncLazy;
 use std::ops::Deref;
 use std::panic;
 use std::path::{Path, PathBuf};
@@ -230,13 +231,11 @@ fn display_help() {
 
 const BUG_REPORT_URL: &str = "https://github.com/rust-lang/rust-clippy/issues/new";
 
-lazy_static! {
-    static ref ICE_HOOK: Box<dyn Fn(&panic::PanicInfo<'_>) + Sync + Send + 'static> = {
-        let hook = panic::take_hook();
-        panic::set_hook(Box::new(|info| report_clippy_ice(info, BUG_REPORT_URL)));
-        hook
-    };
-}
+static ICE_HOOK: SyncLazy<Box<dyn Fn(&panic::PanicInfo<'_>) + Sync + Send + 'static>> = SyncLazy::new(|| {
+    let hook = panic::take_hook();
+    panic::set_hook(Box::new(|info| report_clippy_ice(info, BUG_REPORT_URL)));
+    hook
+});
 
 fn report_clippy_ice(info: &panic::PanicInfo<'_>, bug_report_url: &str) {
     // Invoke our ICE handler, which prints the actual panic message and optionally a backtrace
@@ -277,9 +276,9 @@ fn report_clippy_ice(info: &panic::PanicInfo<'_>, bug_report_url: &str) {
     // If backtraces are enabled, also print the query stack
     let backtrace = env::var_os("RUST_BACKTRACE").map_or(false, |x| &x != "0");
 
-    if backtrace {
-        TyCtxt::try_print_query_stack(&handler);
-    }
+    let num_frames = if backtrace { None } else { Some(2) };
+
+    TyCtxt::try_print_query_stack(&handler, num_frames);
 }
 
 fn toolchain_path(home: Option<String>, toolchain: Option<String>) -> Option<PathBuf> {
@@ -295,7 +294,7 @@ fn toolchain_path(home: Option<String>, toolchain: Option<String>) -> Option<Pat
 
 pub fn main() {
     rustc_driver::init_rustc_env_logger();
-    lazy_static::initialize(&ICE_HOOK);
+    SyncLazy::force(&ICE_HOOK);
     exit(rustc_driver::catch_with_exit_code(move || {
         let mut orig_args: Vec<String> = env::args().collect();
 
@@ -357,7 +356,7 @@ pub fn main() {
                 args.extend(vec!["--sysroot".into(), sys_root]);
             };
 
-            return rustc_driver::run_compiler(&args, &mut DefaultCallbacks, None, None);
+            return rustc_driver::RunCompiler::new(&args, &mut DefaultCallbacks).run();
         }
 
         if orig_args.iter().any(|a| a == "--version" || a == "-V") {
@@ -420,6 +419,6 @@ pub fn main() {
         let mut default = DefaultCallbacks;
         let callbacks: &mut (dyn rustc_driver::Callbacks + Send) =
             if clippy_enabled { &mut clippy } else { &mut default };
-        rustc_driver::run_compiler(&args, callbacks, None, None)
+        rustc_driver::RunCompiler::new(&args, callbacks).run()
     }))
 }