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-rw-r--r--src/librustc_mir/transform/generator.rs4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/librustc_mir/transform/generator.rs b/src/librustc_mir/transform/generator.rs
index d2da1e6e3ac..780b3c9686b 100644
--- a/src/librustc_mir/transform/generator.rs
+++ b/src/librustc_mir/transform/generator.rs
@@ -212,8 +212,8 @@ impl<'a, 'tcx> TransformVisitor<'a, 'tcx> {
     // Create a statement which reads the discriminant into a temporary
     fn get_discr(&self, mir: &mut Mir<'tcx>) -> (Statement<'tcx>, Place<'tcx>) {
         let temp_decl = LocalDecl::new_internal(self.tcx.types.isize, mir.span);
-        let temp = Place::Base(PlaceBase::Local(Local::new(mir.local_decls.len())));
-        mir.local_decls.push(temp_decl);
+        let local_decls_len = mir.local_decls.push(temp_decl);
+        let temp = Place::Base(PlaceBase::Local(local_decls_len));
 
         let self_place = Place::Base(PlaceBase::Local(self_arg()));
         let assign = Statement {