X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/5f87211cb40944a1f81631542404db93f869aa8f..97ae878ec376149ba49bd08c1bd6590dd5224671:/data/stack.hh

diff --git a/data/stack.hh b/data/stack.hh
index 7ed55606..037c212f 100644
--- a/data/stack.hh
+++ b/data/stack.hh
@@ -53,11 +53,15 @@ m4_define([b4_stack_define],
       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