Fix gcc12 compilation issues

Resolves: #2047138

ypserv.spec

@@ -2,7 +2,7 @@ Summary: The NIS (Network Information Service) server
 Url: http://www.linux-nis.org/nis/ypserv/index.html
 Name: ypserv
 Version: 4.2
-Release: 3%{?dist}
+Release: 4%{?dist}
 License: GPLv2
 Source0: https://github.com/thkukuk/%{name}/archive/v%{version}.tar.gz
 Source1: ypserv.service
@@ -91,6 +91,8 @@ export CFLAGS="$RPM_OPT_FLAGS -fPIC"
 export CFLAGS="$RPM_OPT_FLAGS -fpic"
 %endif
 
+# Fix gcc12 issues (#2047138)
+export CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2 -Wno-format-overflow"
 
 %configure \
     --enable-checkroot \
@@ -173,6 +175,10 @@ install -m 755 %{SOURCE4} $RPM_BUILD_ROOT%{_libexecdir}/rpc.yppasswdd.env
 %{_includedir}/rpcsvc
 
 %changelog
+* Tue Feb 01 2022 Marek Kulik <mkulik@redhat.com> - 4.2-4
+- Fix gcc12 compilation issues
+- Resolves: #2047138
+
 * Sat Jan 22 2022 Fedora Release Engineering <releng@fedoraproject.org> - 4.2-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_36_Mass_Rebuild