Add patch to fix crash: xmlParserPrintFileContextInternal mangles utf8

libxml2-2.9.8-python3-unicode-errors.patch

@@ -0,0 +1,34 @@
+Index: libxml2-2.9.5/python/libxml.c
+===================================================================
+--- libxml2-2.9.5.orig/python/libxml.c
++++ libxml2-2.9.5/python/libxml.c
+@@ -1620,6 +1620,7 @@ libxml_xmlErrorFuncHandler(ATTRIBUTE_UNU
+     PyObject *message;
+     PyObject *result;
+     char str[1000];
++    unsigned char *ptr = (unsigned char *)str;
+ 
+ #ifdef DEBUG_ERROR
+     printf("libxml_xmlErrorFuncHandler(%p, %s, ...) called\n", ctx, msg);
+@@ -1636,12 +1637,20 @@ libxml_xmlErrorFuncHandler(ATTRIBUTE_UNU
+ 	    str[999] = 0;
+         va_end(ap);
+ 
++#if PY_MAJOR_VERSION >= 3
++        /* Ensure the error string doesn't start at UTF8 continuation. */
++        while (*ptr && (*ptr & 0xc0) == 0x80)
++            ptr++;
++#endif
++
+         list = PyTuple_New(2);
+         PyTuple_SetItem(list, 0, libxml_xmlPythonErrorFuncCtxt);
+         Py_XINCREF(libxml_xmlPythonErrorFuncCtxt);
+-        message = libxml_charPtrConstWrap(str);
++        message = libxml_charPtrConstWrap(ptr);
+         PyTuple_SetItem(list, 1, message);
+         result = PyEval_CallObject(libxml_xmlPythonErrorFuncHandler, list);
++        /* Forget any errors caused in the error handler. */
++        PyErr_Clear();
+         Py_XDECREF(list);
+         Py_XDECREF(result);
+     }

libxml2.spec

@@ -1,6 +1,6 @@
 Name:           libxml2
 Version:        2.9.8
-Release:        4%{?dist}
+Release:        5%{?dist}
 Summary:        Library providing XML and HTML support
 
 License:        MIT
@@ -21,6 +21,9 @@ Patch0010:      0010-Remove-a-misleading-line-from-xmlCharEncOutput.patch
 Patch0011:      0011-Remove-stray-character-from-comment.patch
 Patch0012:      0012-Fix-nullptr-deref-with-XPath-logic-ops.patch
 Patch0013:      0013-Fix-infinite-loop-in-LZMA-decompression.patch
+# Patch from openSUSE.
+# See:  https://bugzilla.gnome.org/show_bug.cgi?id=789714
+Patch0014:      libxml2-2.9.8-python3-unicode-errors.patch
 
 BuildRequires:  autoconf
 BuildRequires:  automake
@@ -182,6 +185,9 @@ gzip -9 -c doc/libxml2-api.xml > doc/libxml2-api.xml.gz
 %{python3_sitearch}/libxml2mod.so
 
 %changelog
+* Sun Jan 06 2019 Björn Esser <besser82@fedoraproject.org> - 2.9.8-5
+- Add patch to fix crash: xmlParserPrintFileContextInternal mangles utf8
+
 * Thu Aug 02 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 2.9.8-4
 - Backport patches from upstream