fix invalid delete (upstream ticket #11)

pycups-invalid-pointer.patch

@@ -0,0 +1,21 @@
+diff --git a/cupsconnection.c b/cupsconnection.c
+index 132dd25..d54a7fa 100644
+--- a/cupsconnection.c
++++ b/cupsconnection.c
+@@ -3827,7 +3827,7 @@ Connection_printTestPage (Connection *self, PyObject *args, PyObject *kwds)
+   const char *datadir;
+   char filename[PATH_MAX];
+   char uri[HTTP_MAX_URI];
+-  ipp_t *request, *answer;
++  ipp_t *request, *answer = NULL;
+   ipp_attribute_t *attr;
+   char *resource;
+   int jobid = 0;
+@@ -3923,6 +3923,7 @@ Connection_printTestPage (Connection *self, PyObject *args, PyObject *kwds)
+     Connection_end_allow_threads (self);
+     if (answer && ippGetStatusCode (answer) == IPP_NOT_POSSIBLE) {
+       ippDelete (answer);
++      answer = NULL;
+       // Perhaps it's a class, not a printer.
+       construct_uri (uri, sizeof (uri),
+ 		     "ipp://localhost/classes/", printer);

python-cups.spec

@@ -6,7 +6,7 @@
 Summary:       Python bindings for CUPS
 Name:          python-cups
 Version:       2.0.1
-Release:       6%{?dist}
+Release:       7%{?dist}
 # older URL, but still with useful information about pycups
 #URL:           http://cyberelk.net/tim/software/pycups/
 URL:           https://github.com/OpenPrinting/pycups/
@@ -16,6 +16,7 @@ License:       GPLv2+
 # all taken from upstream
 Patch01: 0001-examples-cupstree.py-remove-shebang.patch
 Patch02: 0001-postscriptdriver.prov-ignore-driverless-utilities.patch
+Patch03: pycups-invalid-pointer.patch
 
 # gcc is no longer in buildroot by default
 BuildRequires: gcc
@@ -73,6 +74,9 @@ export PYTHONPATH=%{buildroot}%{python3_sitearch}
 %doc examples html
 
 %changelog
+* Mon Dec 14 2020 Zdenek Dohnal <zdohnal@redhat.com> - 2.0.1-7
+- fix invalid delete (upstream ticket #11)
+
 * Thu Nov 05 2020 Zdenek Dohnal <zdohnal@redhat.com> - 2.0.1-6
 - make is no longer in buildroot by default
 - use smaller git-core instead of git