From 90a87d96eaf5b97cd53cb0ee0495b646be7b84bb Mon Sep 17 00:00:00 2001
From: Werner Koch <wk@gnupg.org>
Date: Wed, 26 Aug 2020 15:15:34 +0200
Subject: [PATCH] build: Silence gcc warning -Wformat-zero-length

* configure.ac: Avoid useless gcc warning.  We use an empty string
quite often, for example in log_printhex.
---
 configure.ac | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configure.ac b/configure.ac
index 47d52fbdc..b76f18264 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1620,6 +1620,7 @@ if test "$GCC" = yes; then
         if test x"$_gcc_wopt" = xyes ; then
           mycflags="$mycflags -W -Wno-sign-compare -Wno-format-zero-length"
           mycflags="$mycflags -Wno-missing-field-initializers"
+          mycflags="$mycflags -Wno-format-zero-length"
         fi
 
         AC_MSG_CHECKING([if gcc supports -Wdeclaration-after-statement])