1 files changed, 4 insertions, 3 deletions
diff --git a/src/cfg/domtree.h b/src/cfg/domtree.h
index 5e54f7c32..5753a3114 100644
--- a/src/cfg/domtree.h
+++ b/src/cfg/domtree.h
@@ -47,6 +47,10 @@ namespace wasm {
 template<typename BasicBlock> struct DomTree {
   std::vector<Index> iDoms;
 
+  // Use a nonsense value to indicate what has yet to be initialized or what is
+  // irrelevant.
+  enum { nonsense = Index(-1) };
+
   DomTree(std::vector<std::unique_ptr<BasicBlock>>& blocks);
 };
 
@@ -84,9 +88,6 @@ DomTree<BasicBlock>::DomTree(std::vector<std::unique_ptr<BasicBlock>>& blocks) {
     blockIndices[blocks[i].get()] = i;
   }
 
-  // Use a nonsense value to indicate what has yet to be initialized.
-  const Index nonsense = -1;
-
   // Initialize the iDoms array. The entry starts with its own index, which is
   // used as a guard value in effect (we will never process it, and we will fix
   // up this value at the very end). All other nodes start with a nonsense value