From 13371b59ee918445ede03cebb741539db807e0e7 Mon Sep 17 00:00:00 2001
From: est31 <MTest31@outlook.com>
Date: Sat, 1 Aug 2020 12:57:35 +0200
Subject: Make doctests collect and emit the unused externs

---
 compiler/rustc_session/src/config.rs | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'compiler')

diff --git a/compiler/rustc_session/src/config.rs b/compiler/rustc_session/src/config.rs
index 433b87aa3c6..2965fe8e1e8 100644
--- a/compiler/rustc_session/src/config.rs
+++ b/compiler/rustc_session/src/config.rs
@@ -485,6 +485,10 @@ impl Externs {
     pub fn iter(&self) -> BTreeMapIter<'_, String, ExternEntry> {
         self.0.iter()
     }
+
+    pub fn len(&self) -> usize {
+        self.0.len()
+    }
 }
 
 impl ExternEntry {
-- 
cgit 1.4.1-3-g733a5