py-breakpoint-create-fail.exp revision 1.1.1.4
1# Copyright (C) 2016-2020 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 perror "could not run to main" 33 continue 34} 35 36# The following will create a breakpoint Python wrapper whose construction will 37# abort: the requested symbol is not defined. GDB should not keep a reference 38# to the wrapper; however it used to... 39gdb_test "source py-breakpoint-create-fail.py" 40 41# ... and when it did, as a result, the following breakpoint creation (not 42# initiated by the Python API) would dereference the already-freed Python 43# breakpoint wrapper, resulting in undefined behavior, sometimes observed as a 44# gdb crash, and other times causing the next stop to invoke the Python wrapper 45# "stop" method for the object that is not supposed to exist. 46gdb_test "break foo" 47 48set test "continuing to foo" 49gdb_test_multiple "continue" "$test" { 50 -re "MyBP\.stop was invoked\!.*$gdb_prompt $" { 51 fail "$test" 52 } 53 -re "Continuing.*Breakpoint 2, foo.*$gdb_prompt $" { 54 pass "$test" 55 } 56} 57