From 257389882de113945d3f9f1abb9d0a431ca3cf92 Mon Sep 17 00:00:00 2001
From: yukang <moorekang@gmail.com>
Date: Fri, 10 Feb 2023 08:01:50 +0000
Subject: add test for no input file

---
 compiler/rustc_driver_impl/src/lib.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'compiler/rustc_driver_impl/src')

diff --git a/compiler/rustc_driver_impl/src/lib.rs b/compiler/rustc_driver_impl/src/lib.rs
index 5e403d846e1..e5104e2d3f9 100644
--- a/compiler/rustc_driver_impl/src/lib.rs
+++ b/compiler/rustc_driver_impl/src/lib.rs
@@ -628,7 +628,10 @@ fn print_crate_info(
                 println!("{}", serde_json::to_string_pretty(&sess.target.to_json()).unwrap());
             }
             FileNames | CrateName => {
-                let Some(attrs) = attrs.as_ref() else { return Compilation::Continue; };
+                let Some(attrs) = attrs.as_ref() else {
+                    // no crate attributes, print out an error and exit
+                    return Compilation::Continue;
+                };
                 let t_outputs = rustc_interface::util::build_output_filenames(attrs, sess);
                 let id = rustc_session::output::find_crate_name(sess, attrs);
                 if *req == PrintRequest::CrateName {
-- 
cgit 1.4.1-3-g733a5