fix #107822, handle properly when there is no crate attrs

chenyukang · chenyukang · commit b940f5088e72 · 2023-02-09T09:11:25.000Z
diff --git a/compiler/rustc_driver_impl/src/lib.rs b/compiler/rustc_driver_impl/src/lib.rs
@@ -628,7 +628,7 @@ fn print_crate_info(
                 println!("{}", serde_json::to_string_pretty(&sess.target.to_json()).unwrap());
             }
             FileNames | CrateName => {
-                let attrs = attrs.as_ref().unwrap();
+                let Some(attrs) = attrs.as_ref() else { 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 {

Original file line number	Diff line number	Diff line change
`@@ -628,7 +628,7 @@ fn print_crate_info(`
`628`	`628`	`println!("{}", serde_json::to_string_pretty(&sess.target.to_json()).unwrap());`
`629`	`629`	`}`
`630`	`630`	`FileNames \| CrateName => {`
`631`		`- let attrs = attrs.as_ref().unwrap();`
	`631`	`+ let Some(attrs) = attrs.as_ref() else { return Compilation::Continue; };`
`632`	`632`	`let t_outputs = rustc_interface::util::build_output_filenames(attrs, sess);`
`633`	`633`	`let id = rustc_session::output::find_crate_name(sess, attrs);`
`634`	`634`	`if *req == PrintRequest::CrateName {`