fix build with gcc 10 (#1800195)

tftp-hpa-5.2-gcc10.patch

@@ -0,0 +1,12 @@
+diff -up tftp-hpa-5.2/tftp/tftp.c.gcc10 tftp-hpa-5.2/tftp/tftp.c
+--- tftp-hpa-5.2/tftp/tftp.c.gcc10	2020-05-04 00:56:28.787896509 +0200
++++ tftp-hpa-5.2/tftp/tftp.c	2020-05-04 00:58:42.502901005 +0200
+@@ -48,7 +48,7 @@ extern int maxtimeout;
+ #define PKTSIZE    SEGSIZE+4
+ char ackbuf[PKTSIZE];
+ int timeout;
+-sigjmp_buf toplevel;
++extern sigjmp_buf toplevel;
+ sigjmp_buf timeoutbuf;
+ 
+ static void nak(int, const char *);

tftp.spec

@@ -4,7 +4,7 @@
 Summary: The client for the Trivial File Transfer Protocol (TFTP)
 Name: tftp
 Version: 5.2
-Release: 29%{?dist}
+Release: 30%{?dist}
 License: BSD
 URL: http://www.kernel.org/pub/software/network/tftp/
 Source0: http://www.kernel.org/pub/software/network/tftp/tftp-hpa/tftp-hpa-%{version}.tar.bz2
@@ -21,6 +21,7 @@ Patch7: tftp-hpa-0.49-stats.patch
 Patch8: tftp-hpa-5.2-pktinfo.patch
 Patch9: tftp-doc.patch
 Patch10: tftp-enhanced-logging.patch
+Patch11: tftp-hpa-5.2-gcc10.patch
 
 BuildRequires:  gcc
 BuildRequires: readline-devel autoconf systemd-units
@@ -58,6 +59,7 @@ systemd socket activation, and is disabled by default.
 %patch8 -p1 -b .pktinfo
 %patch9 -p1 -b .doc
 %patch10 -p1 -b .logging
+%patch11 -p1 -b .gcc10
 
 %build
 autoreconf
@@ -100,6 +102,9 @@ install -p -m 644 %SOURCE2 ${RPM_BUILD_ROOT}%{_unitdir}
 %{_unitdir}/*
 
 %changelog
+* Sun May 03 2020 Dominik Mierzejewski <rpm@greysector.net> - 5.2-30
+- fix build with gcc 10 (#1800195)
+
 * Fri Jan 31 2020 Fedora Release Engineering <releng@fedoraproject.org> - 5.2-29
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild