From 08a206f3eb2713a17eda636ebb96ed8142a4036d Mon Sep 17 00:00:00 2001
From: Jeffrey Walton <noloader@gmail.com>
Date: Wed, 21 Sep 2016 12:47:26 -0400
Subject: [PATCH] Rewrite 'keylength < MIN_KEYLENGTH' to avoid
 -Wtautological-compare The warning surfaces under earlier Clnag's and GCC's

---
 seckey.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/seckey.h b/seckey.h
index bbf1ea7a..e033c8df 100644
--- a/seckey.h
+++ b/seckey.h
@@ -215,7 +215,8 @@ public:
 	// TODO: Figure out how to make this CRYPTOPP_CONSTEXPR
 	static size_t CRYPTOPP_API StaticGetValidKeyLength(size_t keylength)
 	{
-		if (keylength < (size_t)MIN_KEYLENGTH)
+		// Rewrite 'keylength < MIN_KEYLENGTH' to avoid -Wtautological-compare
+		if ((int)keylength - MIN_KEYLENGTH < 0)
 			return MIN_KEYLENGTH;
 		else if (keylength > (size_t)MAX_KEYLENGTH)
 			return (size_t)MAX_KEYLENGTH;