libdnf: backport patch to fix segfault

This is needed to allow libdnf to build OK with python 3.13.1. Without
it, a vague "Could not invoke dnf" error is seen during rootfs (e.g.
when building core-image-full-cmdline), with a return code of -11.

(From OE-Core rev: 5104807bdb952e90e831759266bd830d523e3d16)

Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 85 insertions, 0 deletions

diff --git a/meta/recipes-devtools/libdnf/libdnf/0001-Fix-a-segfault-in-iterator-of-a-ConfigParser-section.patch b/meta/recipes-devtools/libdnf/libdnf/0001-Fix-a-segfault-in-iterator-of-a-ConfigParser-section.patch
new file mode 100644
index 0000000000..1c62d02455
--- /dev/null
+++ b/meta/recipes-devtools/libdnf/libdnf/0001-Fix-a-segfault-in-iterator-of-a-ConfigParser-section.patch
@@ -0,0 +1,84 @@
+From f3302a865b230e021e9defbcea978ed1290a9b2f Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Miro=20Hron=C4=8Dok?= <miro@hroncok.cz>
+Date: Fri, 6 Dec 2024 18:01:16 +0100
+Subject: [PATCH] Fix a segfault in iterator of a ConfigParser section
+
+An iterator should return self on __iter__.
+
+So that this works:
+
+    >>> it1 = iter(sectObj)
+    >>> it2 = iter(it1)
+    >>> it1 is it2
+    True
+
+Previously, this iterator did not return self on __iter__, it was like this:
+
+    class PreserveOrderMapStringStringIterator(object):
+        ...
+        def __iter__(self):
+            return _common_types.PreserveOrderMapStringStringIterator___iter__(self)
+
+And that returned a new Python object.
+
+This fixes https://bugzilla.redhat.com/2330562 by avoiding a second iterator object.
+
+My SWIG skills are close to zero,
+perhaps this is not the best way to return self, but it seems to work.
+
+Upstream-Status: Backport
+(https://github.com/rpm-software-management/libdnf/commit/f3302a865b)
+
+Backport so that it works properly with Python 3.13.1.
+
+Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>
+
+---
+ bindings/swig/common_types.i | 11 +++++++----
+ bindings/swig/conf.i         |  4 ----
+ 2 files changed, 7 insertions(+), 8 deletions(-)
+
+diff --git a/bindings/swig/common_types.i b/bindings/swig/common_types.i
+index c9ae798a..a1f90d9e 100644
+--- a/bindings/swig/common_types.i
++++ b/bindings/swig/common_types.i
+@@ -63,10 +63,6 @@ template<class T>
+ class Iterator {
+ public:
+     Iterator(typename T::iterator _cur, typename T::iterator _end) : cur(_cur), end(_end) {}
+-    Iterator* __iter__()
+-    {
+-      return this;
+-    }
+ 
+     typename T::iterator cur;
+     typename T::iterator end;
+@@ -165,3 +161,10 @@ EXTEND_TEMPLATE_PreserveOrderMapIterator(std::string, std::string)
+ EXTEND_TEMPLATE_PreserveOrderMapIterator(std::string, libdnf::PreserveOrderMap<std::string, std::string>)
+ 
+ %exception;  // beware this resets all exception handlers if you import this file after defining any
++
++%pythoncode %{
++def PreserveOrderMapStringStringIterator___iter__(self):
++    return self
++PreserveOrderMapStringStringIterator.__iter__ = PreserveOrderMapStringStringIterator___iter__
++del PreserveOrderMapStringStringIterator___iter__
++%}
+diff --git a/bindings/swig/conf.i b/bindings/swig/conf.i
+index b6a0ce88..2f77003f 100644
+--- a/bindings/swig/conf.i
++++ b/bindings/swig/conf.i
+@@ -71,10 +71,6 @@ template<class T>
+ class Iterator {
+ public:
+     Iterator(typename T::iterator _cur, typename T::iterator _end) : cur(_cur), end(_end) {}
+-    Iterator* __iter__()
+-    {
+-        return this;
+-    }
+ 
+     typename T::iterator cur;
+     typename T::iterator end;
+-- 
+2.39.5
+
diff --git a/meta/recipes-devtools/libdnf/libdnf_0.73.4.bb b/meta/recipes-devtools/libdnf/libdnf_0.73.4.bb
index 0817da7ca6..5b9e734e82 100644
--- a/meta/recipes-devtools/libdnf/libdnf_0.73.4.bb
+++ b/meta/recipes-devtools/libdnf/libdnf_0.73.4.bb
@@ -11,6 +11,7 @@ SRC_URI = "git://github.com/rpm-software-management/libdnf;branch=dnf-4-master;p
            file://enable_test_data_dir_set.patch \
            file://0001-drop-FindPythonInstDir.cmake.patch \
            file://armarch.patch \
+           file://0001-Fix-a-segfault-in-iterator-of-a-ConfigParser-section.patch \
            "
 
 SRCREV = "79ed383cd5a822e6d8d9d549835383f5c5106204"