make sure that variables on stack are initialized

upstream bug: https://savannah.gnu.org/bugs/?56023

0001-nano-4.0-init-vars.patch

@@ -0,0 +1,42 @@
+From d1d0b8a5a3ceff069f144a5f8ac01a175d96b511 Mon Sep 17 00:00:00 2001
+From: Devin Hussey <husseydevin@gmail.com>
+Date: Thu, 28 Mar 2019 17:28:47 -0400
+Subject: [PATCH] files: initialize a variable before referencing it
+
+The lack of initialization caused a nasty bug on some targets (such as
+ARMv7) which would make it so that ^S would just say "Cancelled".
+
+While x86 (both 64 and 32 bits) seems to initialize 'response' to zero or
+a positive number, ARM does not, and there is usually a negative value in
+its place, which triggers the 'if (response < 0)' check and, as a result,
+the code says "Cancelled".
+
+This fixes https://savannah.gnu.org/bugs/?56023.
+Reported-by: Devin Hussey <husseydevin@gmail.com>
+
+Bug existed since version 4.0, commit 0f9d60a3.
+
+Signed-off-by: Devin Hussey <husseydevin@gmail.com>
+
+Upstream-commit: 7ad232d71470cd8c4dc63aeb02f11c9e8df9ecdb
+Signed-off-by: Kamil Dudka <kdudka@redhat.com>
+---
+ src/files.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/files.c b/src/files.c
+index 84e3f68..fd54c16 100644
+--- a/src/files.c
++++ b/src/files.c
+@@ -2101,7 +2101,7 @@ int do_writeout(bool exiting, bool withprompt)
+ 
+ 	while (TRUE) {
+ 		const char *msg;
+-		int response, choice;
++		int response = 0, choice = 0;
+ 		functionptrtype func;
+ #ifndef NANO_TINY
+ 		const char *formatstr, *backupstr;
+-- 
+2.17.2
+

nano.spec

@@ -1,7 +1,7 @@
 Summary:         A small text editor
 Name:            nano
 Version:         4.0
-Release:         1%{?dist}
+Release:         2%{?dist}
 License:         GPLv3+
 URL:             https://www.nano-editor.org
 Source:          https://www.nano-editor.org/dist/latest/%{name}-%{version}.tar.xz
@@ -17,6 +17,10 @@ BuildRequires:   sed
 BuildRequires:   texinfo
 Conflicts:       filesystem < 3
 
+# make sure that variables on stack are initialized
+# upstream bug: https://savannah.gnu.org/bugs/?56023
+Patch1: 0001-nano-4.0-init-vars.patch
+
 %description
 GNU nano is a small and friendly text editor.
 
@@ -64,6 +68,9 @@ install -m 0644 ./nanorc %{buildroot}%{_sysconfdir}/nanorc
 %{_datadir}/nano
 
 %changelog
+* Tue Apr 02 2019 Kamil Dudka <kdudka@redhat.com> - 4.0-2
+- make sure that variables on stack are initialized
+
 * Mon Mar 25 2019 Kamil Dudka <kdudka@redhat.com> - 4.0-1
 - new upstream release