# HG changeset patch
# User Lukas Stadler <lukas.stadler@oracle.com>
# Date 1395133060 -3600
# Node ID 532d9b78c7d49d7f7eac37fc687993b66041d46d
# Parent  00d1f5391b2e43697df31b044e36dd153ee3f2f4
assert that only live ValueNodes are added as inputs and successors

diff -r 00d1f5391b2e -r 532d9b78c7d4 graal/com.oracle.graal.graph/src/com/oracle/graal/graph/Node.java
--- a/graal/com.oracle.graal.graph/src/com/oracle/graal/graph/Node.java	Tue Mar 18 09:56:42 2014 +0100
+++ b/graal/com.oracle.graal.graph/src/com/oracle/graal/graph/Node.java	Tue Mar 18 09:57:40 2014 +0100
@@ -458,6 +458,7 @@
      * newInput: removes this node from oldInput's usages and adds this node to newInput's usages.
      */
     protected void updateUsages(Node oldInput, Node newInput) {
+        assert isAlive() && (newInput == null || newInput.isAlive()) : "adding " + newInput + " to " + this + " instead of " + oldInput;
         if (oldInput != newInput) {
             if (oldInput != null) {
                 if (oldInput.recordsUsages()) {
@@ -482,6 +483,7 @@
      * this node to newSuccessor's predecessors.
      */
     protected void updatePredecessor(Node oldSuccessor, Node newSuccessor) {
+        assert isAlive() && (newSuccessor == null || newSuccessor.isAlive()) : "adding " + newSuccessor + " to " + this + " instead of " + oldSuccessor;
         assert graph == null || !graph.isFrozen();
         if (oldSuccessor != newSuccessor) {
             if (oldSuccessor != null) {