[PATCH] gdb/testsuite: fix gdb.python/py-unwind.exp with python >= 3.11

[Ilya Leoshkevich]

Python 3.11 changed the AttributeError message - see commit
0cb765b2cec9 ("bpo-46730: Add more info to @property AttributeError
messages (GH-31311)").  Add the new message to the expectations.
---
 gdb/testsuite/gdb.python/py-unwind.exp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gdb/testsuite/gdb.python/py-unwind.exp b/gdb/testsuite/gdb.python/py-unwind.exp
index e7c4c23dae2..807f63d5089 100644
--- a/gdb/testsuite/gdb.python/py-unwind.exp
+++ b/gdb/testsuite/gdb.python/py-unwind.exp
@@ -105,9 +105,11 @@ check_info_unwinder "info unwinder after failed disable" on
 # unwider.  Doing this is bad as the new name might clash with an
 # already registered name, which violates the promises made during
 # 'register_unwinder'.
+set pattern_1 "can't set attribute(?: 'name')?"
+set pattern_2 "property 'name' of 'TestUnwinder' object has no setter"
 gdb_test "python global_test_unwinder.name = \"foo\"" \
     [multi_line \
-	 "AttributeError: can't set attribute(?: 'name')?" \
+	 "AttributeError: (?:${pattern_1}|${pattern_2})" \
 	 "Error while executing Python code\\."]
 check_info_unwinder "info unwinder after failed name change" on
 
-- 
2.40.1