gdb/testsuite/gdb.python/py-finish-breakpoint2.exp

# Copyright (C) 2011-2023 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# This file is part of the GDB testsuite.  It tests the mechanism
# exposing values to Python.

load_lib gdb-python.exp

require allow_python_tests

standard_testfile .cc

if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug c++}]} {
    return -1
}

if {![runto_main]} {
    return 0
}

set pyfile [gdb_remote_download host \
		${srcdir}/${subdir}/${testfile}.py]

#
# Check FinishBreakpoints against C++ exceptions
#

gdb_breakpoint [gdb_get_line_number "Break before exception"]
gdb_breakpoint [gdb_get_line_number "Break after exception 2"]

gdb_test "source $pyfile" ".*Python script imported.*" \
         "import python scripts"
         
gdb_breakpoint "throw_exception_1"

#
# Part 1.
#

gdb_test "continue" "Breakpoint .*throw_exception_1.*" "run to exception 1"

# Count breakpoints before setting finishbreakpoint.
gdb_test "python print (len(gdb.breakpoints()))" "4" "check BP count"

gdb_test "python ExceptionFinishBreakpoint(gdb.newest_frame())" \
    "init ExceptionFinishBreakpoint" "set FinishBP after the exception"

gdb_test "continue" "Break before exception.*" \
    "break before exception"

set need_continue 0
gdb_test_multiple "continue" "finishBP out-of-scope" {
    -re -wrap "exception did not finish.*" {
	# Out-of-scope.  For instance on x86_64 with unix/-m32.
	pass $gdb_test_name
    }
    -re -wrap "stopped at ExceptionFinishBreakpoint.*" {
	# Triggered despite the fact that the function call never finished.
	# It just so happens to be that the frame return address at which the
	# breakpoint is set, is also the first instruction after the exception
	# has been handled.  For instance on x86_64 with unix/-m64.
	kfail python/29909 $gdb_test_name
	set need_continue 1
    }
}

# Count breakpoints, check that the finishbreakpoint has been removed.
gdb_test "python print (len(gdb.breakpoints()))" "4" "check finish BP removal"

#
# Part 2.
#

if { $need_continue } {
    gdb_test "continue" ".*Breakpoint.* throw_exception_1.*" \
	"continue to second exception"
}
gdb_test "python ExceptionFinishBreakpoint(gdb.newest_frame())" \
    "init ExceptionFinishBreakpoint" "set FinishBP after the exception again"

gdb_test "continue" "Break before exception.*" \
    "break before exception again"

gdb_test "continue" ".*exception did not finish.*" "FinishBreakpoint with exception thrown not caught"