From caf0a3db20bbc03d2261b2c5a112bc0eddd3ca73 Mon Sep 17 00:00:00 2001
From: Alon Zakai <alonzakai@gmail.com>
Date: Thu, 6 Oct 2016 17:37:50 -0700
Subject: Require unique names in binaryen IR (#746)

---
 src/ast_utils.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/ast_utils.h')

diff --git a/src/ast_utils.h b/src/ast_utils.h
index 8124d3a79..861a09aaf 100644
--- a/src/ast_utils.h
+++ b/src/ast_utils.h
@@ -25,8 +25,11 @@
 
 namespace wasm {
 
+// Finds if there are breaks targeting a name. Note that since names are
+// unique in our IR, we just need to look for the name, and do not need
+// to analyze scoping.
 struct BreakSeeker : public PostWalker<BreakSeeker, Visitor<BreakSeeker>> {
-  Name target; // look for this one XXX looking by name may fall prey to duplicate names
+  Name target;
   Index found;
   WasmType valueType;
 
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