From 4793c7bafac6c900d8044108a263f6967da871ee Mon Sep 17 00:00:00 2001
From: Aleksandar Prokopec <axel22@gmail.com>
Date: Thu, 24 May 2012 18:22:57 +0200
Subject: Fixes SI-5428.

---
 .../scala/collection/mutable/StackProxy.scala      |  5 ++++
 test/files/run/t5428.check                         |  1 +
 test/files/run/t5428.scala                         | 29 ++++++++++++++++++++++
 3 files changed, 35 insertions(+)
 create mode 100644 test/files/run/t5428.check
 create mode 100644 test/files/run/t5428.scala

diff --git a/src/library/scala/collection/mutable/StackProxy.scala b/src/library/scala/collection/mutable/StackProxy.scala
index 8884f03bbd..9eadfe4045 100644
--- a/src/library/scala/collection/mutable/StackProxy.scala
+++ b/src/library/scala/collection/mutable/StackProxy.scala
@@ -54,6 +54,11 @@ trait StackProxy[A] extends Stack[A] with Proxy {
     this
   }
 
+  override def push(elem: A): this.type = {
+    self.push(elem)
+    this
+  }
+  
   /** Returns the top element of the stack. This method will not remove
    *  the element from the stack. An error is signaled if there is no
    *  element on the stack.
diff --git a/test/files/run/t5428.check b/test/files/run/t5428.check
new file mode 100644
index 0000000000..7b4b1d6558
--- /dev/null
+++ b/test/files/run/t5428.check
@@ -0,0 +1 @@
+Stack(8, 7, 6, 5, 4, 3)
\ No newline at end of file
diff --git a/test/files/run/t5428.scala b/test/files/run/t5428.scala
new file mode 100644
index 0000000000..106bb7fc31
--- /dev/null
+++ b/test/files/run/t5428.scala
@@ -0,0 +1,29 @@
+
+
+
+import collection.mutable.{Stack, StackProxy}
+
+
+
+class A extends StackProxy[Int] {
+  val self = Stack[Int]()
+}
+
+
+object Test {
+  
+  def main(args: Array[String]) {
+    val a = new A
+    
+    a push 3
+    a push 4
+    a push 5
+    
+    a.push(6, 7, 8)
+    
+    println(a)
+    
+    a pop
+  }
+  
+}
-- 
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