Auto merge of #30341 - pnkfelix:call-site-scope, r=nikomatsakis

[rust.git] / src / librustc / middle / dead.rs

diff --git a/src/librustc/middle/dead.rs b/src/librustc/middle/dead.rs
index acd635874e39266bd0a0a11cdaacf6e4ec8ca27a..ec1b447d7111b2d71678e82b368e1418ddd1fa37 100644 (file)
--- a/src/librustc/middle/dead.rs
+++ b/src/librustc/middle/dead.rs
@@ -255,7 +255,7 @@ fn visit_arm(&mut self, arm: &hir::Arm) {
             // necessary for the pattern to match. Those construction sites
             // can't be reached unless the variant is constructed elsewhere.
             let len = self.ignore_variant_stack.len();
-            self.ignore_variant_stack.push_all(&*variants);
+            self.ignore_variant_stack.extend_from_slice(&*variants);
             intravisit::walk_arm(self, arm);
             self.ignore_variant_stack.truncate(len);
         } else {