1# Copyright (C) 2016-2023 Free Software Foundation, Inc.
2#
3# This program is free software; you can redistribute it and/or modify
4# it under the terms of the GNU General Public License as published by
5# the Free Software Foundation; either version 3 of the License, or
6# (at your option) any later version.
7#
8# This program is distributed in the hope that it will be useful,
9# but WITHOUT ANY WARRANTY; without even the implied warranty of
10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11# GNU General Public License for more details.
12#
13# You should have received a copy of the GNU General Public License
14# along with this program.  If not, see <http://www.gnu.org/licenses/>.
15
16# This file is part of the GDB testsuite.  It tests proper handling for
17# breakpoint creation failure.
18
19load_lib gdb-python.exp
20
21standard_testfile
22
23if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile}] } {
24    return -1
25}
26
27# Skip all tests if Python scripting is not enabled.
28if { [skip_python_tests] } { continue }
29
30clean_restart "${testfile}"
31if ![runto_main] {
32    return
33}
34
35# The following will create a breakpoint Python wrapper whose construction will
36# abort: the requested symbol is not defined.  GDB should not keep a reference
37# to the wrapper; however it used to...
38gdb_test "source py-breakpoint-create-fail.py"
39
40# ... and when it did, as a result, the following breakpoint creation (not
41# initiated by the Python API) would dereference the already-freed Python
42# breakpoint wrapper, resulting in undefined behavior, sometimes observed as a
43# gdb crash, and other times causing the next stop to invoke the Python wrapper
44# "stop" method for the object that is not supposed to exist.
45gdb_test "break foo"
46
47set test "continuing to foo"
48gdb_test_multiple "continue" "$test" {
49    -re "MyBP\.stop was invoked\!.*$gdb_prompt $" {
50        fail "$test"
51    }
52    -re "Continuing.*Breakpoint 2, foo.*$gdb_prompt $" {
53        pass "$test"
54    }
55}
56