From 93aaf4fc94c7669391bd101755a1aba1573e5310 Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Fri, 28 Oct 2016 17:07:29 -0700
Subject: [PATCH] Make CSerAction's ForRead() constexpr

The CSerAction's ForRead() method does not depend on any runtime
data, so guarantee that requests to it can be optimized out by
making it constexpr.

Suggested by Cory Fields.
---
 src/serialize.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/serialize.h b/src/serialize.h
index 3b100481d..3b73c5cdf 100644
--- a/src/serialize.h
+++ b/src/serialize.h
@@ -879,11 +879,11 @@ void Unserialize(Stream& is, std::list<T, A>& l)
  */
 struct CSerActionSerialize
 {
-    bool ForRead() const { return false; }
+    constexpr bool ForRead() const { return false; }
 };
 struct CSerActionUnserialize
 {
-    bool ForRead() const { return true; }
+    constexpr bool ForRead() const { return true; }
 };
 
 template<typename Stream, typename T>