From 50ba95fe05cc348496425733554be5fc7d797de1 Mon Sep 17 00:00:00 2001
From: Jack Koenig
Date: Thu, 6 Dec 2018 15:23:08 -0800
Subject: Fix bug in dedup where lots of annotations could prevent dedup (#958)

Iterating on a HashSet could cause identical modules (including
annotations) to not dedup---
 src/main/scala/firrtl/transforms/Dedup.scala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/main')

diff --git a/src/main/scala/firrtl/transforms/Dedup.scala b/src/main/scala/firrtl/transforms/Dedup.scala
index a33eeca6..56ea7cf8 100644
--- a/src/main/scala/firrtl/transforms/Dedup.scala
+++ b/src/main/scala/firrtl/transforms/Dedup.scala
@@ -335,7 +335,7 @@ object DedupModules {
         // Build tag
         val builder = new mutable.ArrayBuffer[Any]()
         agnosticModule.ports.foreach { builder ++= _.serialize }
-        builder ++= agnosticAnnos
+        builder += agnosticAnnos
 
         agnosticModule match {
           case Module(i, n, ps, b) => builder ++= fastSerializedHash(b).toString()//.serialize
-- 
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