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-rw-r--r--chapter08/src/main/java/com/seaofnodes/simple/node/Node.java4
1 files changed, 2 insertions, 2 deletions
diff --git a/chapter08/src/main/java/com/seaofnodes/simple/node/Node.java b/chapter08/src/main/java/com/seaofnodes/simple/node/Node.java
index 2d6d5ad5..ce847453 100644
--- a/chapter08/src/main/java/com/seaofnodes/simple/node/Node.java
+++ b/chapter08/src/main/java/com/seaofnodes/simple/node/Node.java
@@ -224,7 +224,7 @@ public abstract class Node {
}
// Breaks the edge invariants, used temporarily
- protected <N extends Node> N addUse(Node n) { _outputs.add(n); return (N)this; }
+ protected <N extends Node> void addUse(N n) { _outputs.add(n); }
// Remove node 'use' from 'def's (i.e. our) output list, by compressing the list in-place.
// Return true if the output list is empty afterward.
@@ -262,7 +262,7 @@ public abstract class Node {
// Shortcuts to stop DCE mid-parse
// Add bogus null use to keep node alive
- public <N extends Node> N keep() { return addUse(null); }
+ public <N extends Node> N keep() { addUse(null); return (N)this; }
// Remove bogus null.
public <N extends Node> N unkeep() { delUse(null); return (N)this; }