X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/7d6bad195977b0204fc8406cac57cf5a4f1c769b..312c0cff71e784e116c0ecac4c33bc94d54f78de:/data/stack.hh

diff --git a/data/stack.hh b/data/stack.hh
index 61fbde2b..037c212f 100644
--- a/data/stack.hh
+++ b/data/stack.hh
@@ -41,23 +41,27 @@ m4_define([b4_stack_define],
 
     inline
     T&
-    operator [] (unsigned int i)
+    operator[] (unsigned int i)
     {
       return seq_[seq_.size () - 1 - i];
     }
 
     inline
     const T&
-    operator [] (unsigned int i) const
+    operator[] (unsigned int i) const
     {
       return seq_[seq_.size () - 1 - i];
     }
 
+    /// Steal the contents of \a t.
+    ///
+    /// Close to move-semantics.
     inline
     void
-    push (const T& t)
+    push (T& t)
     {
-      seq_.push_back (t);
+      seq_.push_back (T());
+      operator[](0).move (t);
     }
 
     inline