From 0bcfeb9dcd0885e37cda8b209209c18c9822a481 Mon Sep 17 00:00:00 2001
From: "kenton@google.com"
 <kenton@google.com@630680e5-0e50-0410-840e-4b1c322b438d>
Date: Fri, 14 Aug 2009 01:21:01 +0000
Subject: Don't use RTTI in down_cast if GOOGLE_PROTOBUF_NO_RTTI is defined. 
 Patch from Chris Masone (of Google).

---
 src/google/protobuf/stubs/common.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/google/protobuf/stubs/common.h b/src/google/protobuf/stubs/common.h
index c789a776..3f002373 100644
--- a/src/google/protobuf/stubs/common.h
+++ b/src/google/protobuf/stubs/common.h
@@ -283,7 +283,9 @@ inline To down_cast(From* f) {                   // so we only accept pointers
     implicit_cast<From*, To>(0);
   }
 
+#if !defined(NDEBUG) && !defined(GOOGLE_PROTOBUF_NO_RTTI)
   assert(f == NULL || dynamic_cast<To>(f) != NULL);  // RTTI: debug mode only!
+#endif
   return static_cast<To>(f);
 }
 
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