diff --git a/swig-4.0.2-gcc-12-warning-fix-in-test-case.patch b/swig-4.0.2-gcc-12-warning-fix-in-test-case.patch
new file mode 100644
index 0000000..44e6b16
--- /dev/null
+++ b/swig-4.0.2-gcc-12-warning-fix-in-test-case.patch
@@ -0,0 +1,26 @@
+From 76d5a9ec270a763c892ae28070e391cf99e0b7cd Mon Sep 17 00:00:00 2001
+From: William S Fulton <wsf@fultondesigns.co.uk>
+Date: Tue, 18 Jan 2022 21:37:02 +0000
+Subject: [PATCH] gcc-12 warning fix in test-case
+
+Closes #2145
+---
+ Examples/test-suite/nested_class.i | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Examples/test-suite/nested_class.i b/Examples/test-suite/nested_class.i
+index b10c33949..c778a12cf 100644
+--- a/Examples/test-suite/nested_class.i
++++ b/Examples/test-suite/nested_class.i
+@@ -201,7 +201,7 @@ struct Outer {
+     Integer xx;
+   } MultipleInstanceAnonDerived1, MultipleInstanceAnonDerived2, *MultipleInstanceAnonDerived3, MultipleInstanceAnonDerived4[2];
+ 
+-#if defined(__GNUC__) || defined(_MSC_VER) || defined(SWIG)
++#if (defined(__GNUC__) && __GNUC__ < 12) || defined(_MSC_VER) || defined(SWIG)
+ /* some compilers do not accept these */
+   struct : public InnerMultiple {
+     Integer xx;
+-- 
+2.31.1
+
diff --git a/swig.spec b/swig.spec
index 8d35689..5db556e 100644
--- a/swig.spec
+++ b/swig.spec
@@ -15,7 +15,7 @@
 %endif
 
 %{!?tcl:%global tcl 1}
-%{!?guile:%global guile 0}
+%{!?guile:%global guile 1}
 %{!?lualang:%global lualang 1}
 %{!?perllang:%global perllang 1}
 # Disable PHP test it fails with 8.1.0
@@ -54,7 +54,7 @@
 Summary: Connects C/C++/Objective C to some high-level programming languages
 Name:    swig
 Version: 4.0.2
-Release: 11%{?dist}
+Release: 12%{?dist}
 License: GPLv3+ and BSD
 URL:     http://swig.sourceforge.net/
 Source0: http://downloads.sourceforge.net/project/swig/swig/swig-%{version}/swig-%{version}.tar.gz
@@ -77,13 +77,18 @@ Patch4: swig-4.0.2-Support-PHP8.patch
 Patch5: swig-octave-6.patch
 # Fix overload_simple_cast test with Python 3.10 GH#2044
 Patch6: swig-4.0.2-Fix-overload_simple_cast-test-with-Python-3.10.patch
+# gcc-12 warning fix in test-case
+Patch7: swig-4.0.2-gcc-12-warning-fix-in-test-case.patch
 
+BuildRequires: coreutils
+BuildRequires: findutils
 BuildRequires: make
 BuildRequires: perl-interpreter, pcre-devel
 BuildRequires: python%{python3_pkgversion}-devel
 BuildRequires: autoconf, automake, gawk, dos2unix
 BuildRequires: gcc-c++
 BuildRequires: help2man
+BuildRequires: sed
 BuildRequires: perl-devel
 BuildRequires: perl(base)
 BuildRequires: perl(Config)
@@ -217,6 +222,9 @@ done
 %if ! %{golang}
   --without-go \
 %endif
+%if ! %{guile}
+  --without-guile \
+%endif
 %if %{octave}
   --with-octave=%{_bindir}/octave \
   --without-maximum-compile-warnings \
@@ -347,6 +355,9 @@ install -pm 644 Tools/swig.gdb %{buildroot}%{_datadir}/%{name}/gdb
 %{_datadir}/%{name}/gdb
 
 %changelog
+* Fri Jan 21 2022 Jitka Plesnikova <jplesnik@redhat.com> - 4.0.2-12
+- Fix tests against GCC12, enable Guile tests
+
 * Wed Nov 24 2021 Jitka Plesnikova <jplesnik@redhat.com> - 4.0.2-11
 - Disable PHP test, it fails with PHP 8.1