From ace00175c40156e0523de77857f172f3f6a47d32 Mon Sep 17 00:00:00 2001
From: Will Wray <will@dash.org>
Date: Thu, 14 Sep 2017 07:42:49 -0400
Subject: [PATCH]  build: silence gcc7's implicit fallthrough warning (#1622)

This is a well-intentioned but realistically annoying warning. Unfortunately,
it's too easy for a warning in one header to cause dozens of repeated warnings.
https://github.com/bitcoin/bitcoin/pull/10489
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index dad34ecd0e..1370101f73 100644
--- a/configure.ac
+++ b/configure.ac
@@ -202,7 +202,7 @@ fi
 ##       compatibility with the legacy buildsystem.
 ##
 if test "x$CXXFLAGS_overridden" = "xno"; then
-  CXXFLAGS="$CXXFLAGS -Wall -Wextra -Wformat -Wformat-security -Wno-unused-parameter -Wno-self-assign"
+  CXXFLAGS="$CXXFLAGS -Wall -Wextra -Wformat -Wformat-security -Wno-unused-parameter -Wno-self-assign -Wno-implicit-fallthrough"
 fi
 CPPFLAGS="$CPPFLAGS -DHAVE_BUILD_INFO -D__STDC_FORMAT_MACROS"