From a2929a26f5cf3501804fd12071dd6cf6b464a545 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 d26d2d52e..8e37f5672 100644
--- a/src/serialize.h
+++ b/src/serialize.h
@@ -773,11 +773,11 @@ void Unserialize(Stream& is, std::set<K, Pred, A>& m)
  */
 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>