diff options
Diffstat (limited to 'chapter12/src/main/java')
| -rw-r--r-- | chapter12/src/main/java/com/seaofnodes/simple/node/PhiNode.java | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/chapter12/src/main/java/com/seaofnodes/simple/node/PhiNode.java b/chapter12/src/main/java/com/seaofnodes/simple/node/PhiNode.java index 535db980..ebed8dd1 100644 --- a/chapter12/src/main/java/com/seaofnodes/simple/node/PhiNode.java +++ b/chapter12/src/main/java/com/seaofnodes/simple/node/PhiNode.java @@ -103,7 +103,7 @@ public class PhiNode extends Node { if( region().idom(this) instanceof IfNode iff && iff.pred().addDep(this)==val ) { // Must walk the idom on the null side to make sure we hit False. CFGNode idom = (CFGNode)region().in(nullx); - while( idom.in(0) != iff ) idom = idom.idom(); + while( idom.nIns() > 0 && idom.in(0) != iff ) idom = idom.idom(); if( idom instanceof CProjNode proj && proj._idx==1 ) return val; } |