mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2025-02-11 13:02:10 +08:00
7879fba359
We now have unwind-on-timeout and unwind-on-terminating-exception, and then the odd one out unwindonsignal. I'm not a great fan of these squashed together command names, so in this commit I propose renaming this to unwind-on-signal. Obviously I've added the hidden alias unwindonsignal so any existing GDB scripts will keep working. There's one test that I've extended to test the alias works, but in most of the other test scripts I've changed over to use the new name. The docs are updated to reference the new name. Reviewed-By: Eli Zaretskii <eliz@gnu.org> Tested-By: Luis Machado <luis.machado@arm.com> Tested-By: Keith Seitz <keiths@redhat.com>
132 lines
4.7 KiB
Plaintext
132 lines
4.7 KiB
Plaintext
# Copyright 2009-2024 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/>.
|
|
|
|
|
|
# In gdb inferior function calls, if a C++ exception is raised in the
|
|
# dummy-frame, and the exception handler is (normally, and expected to
|
|
# be) out-of-frame, the default C++ handler will (wrongly) be called
|
|
# in an inferior function call.
|
|
# This is incorrect as an exception can normally and legally be handled
|
|
# out-of-frame. The confines of the dummy frame prevent the unwinder
|
|
# from finding the correct handler (or any handler, unless it is
|
|
# in-frame). The default handler calls std::terminate. This will kill
|
|
# the inferior. Assert that terminate should never be called in an
|
|
# inferior function call. These tests test the functionality around
|
|
# unwinding that sequence and also tests the flag behaviour gating this
|
|
# functionality.
|
|
#
|
|
# PR c++/9600.
|
|
|
|
# This test is largely based of gdb.base/callfuncs.exp.
|
|
|
|
require allow_cplus_tests
|
|
|
|
require {!target_info exists gdb,nosignals}
|
|
|
|
standard_testfile .cc
|
|
|
|
# Some targets can't do function calls, so don't even bother with this
|
|
# test.
|
|
require {!target_info exists gdb,cannot_call_functions}
|
|
|
|
if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug c++}]} {
|
|
return -1
|
|
}
|
|
|
|
if {![runto_main]} {
|
|
return
|
|
}
|
|
|
|
# See http://sourceware.org/gdb/bugs/2495
|
|
|
|
# Test normal baseline behaviour. Call a function that
|
|
# does not raise an exception.
|
|
gdb_test "p exceptions.no_throw_function()" " = 1"
|
|
# And one that does but handles it in-frame.
|
|
gdb_test "p exceptions.throw_function_with_handler()" " = 2"
|
|
# Both should return normally.
|
|
|
|
# Test basic unwind. Call a function that raises an exception but
|
|
# does not handle it. It should be rewound.
|
|
gdb_test "p exceptions.throw_function()" \
|
|
"The program being debugged entered a std::terminate call, .*" \
|
|
"call a function that raises an exception without a handler."
|
|
|
|
# Make sure that after rewinding we are back at the call parent.
|
|
gdb_test "bt" \
|
|
"#0 main.*" \
|
|
"bt after returning from a popped frame"
|
|
|
|
# Make sure the only breakpoint is the one set via the runto_main
|
|
# call and that the std::terminate breakpoint has evaporated and
|
|
# cleaned-up.
|
|
gdb_test "info breakpoints" \
|
|
"gdb2495\.cc.*"
|
|
|
|
# Turn off this new behaviour.
|
|
gdb_test_no_output "set unwind-on-terminating-exception off"
|
|
|
|
# Check that it is turned off.
|
|
gdb_test "show unwind-on-terminating-exception" \
|
|
"exception is unhandled while in a call dummy is off.*" \
|
|
"turn off unwind on terminating exception flag"
|
|
|
|
# Check that the old behaviour is restored.
|
|
gdb_test "p exceptions.throw_function()" \
|
|
"The program being debugged was signaled while in a function called .*" \
|
|
"call a function that raises an exception with unwinding off.."
|
|
|
|
# Restart the inferior back at main.
|
|
if {![runto_main]} {
|
|
return
|
|
}
|
|
|
|
|
|
# Check to see if the new behaviour alters the unwind signal
|
|
# behaviour; it should not. Test both on and off states.
|
|
|
|
# Turn on unwind on signal behaviour.
|
|
gdb_test_no_output "set unwind-on-signal on"
|
|
|
|
# Check that it is turned on.
|
|
gdb_test "show unwind-on-signal" \
|
|
"signal is received while in a call dummy is on.*" \
|
|
"turn on unwind on signal"
|
|
|
|
# Check to see if new behaviour interferes with
|
|
# normal signal handling in inferior function calls.
|
|
gdb_test "p exceptions.raise_signal(1)" \
|
|
[multi_line \
|
|
"The program being debugged received signal SIGABRT, Aborted" \
|
|
"while in a function called from GDB\\. GDB has restored the context" \
|
|
"to what it was before the call\\. To change this behavior use" \
|
|
"\"set unwind-on-signal off\"\\. Evaluation of the expression containing" \
|
|
"the function \\(SimpleException::raise_signal\\(int\\)\\) will be abandoned\\."]\
|
|
"check for unwind-on-signal off message"
|
|
|
|
# And reverse - turn off again.
|
|
gdb_test_no_output "set unwind-on-signal off"
|
|
|
|
# Check that it is actually turned off.
|
|
gdb_test "show unwind-on-signal" \
|
|
"signal is received while in a call dummy is off.*" \
|
|
"turn off unwind on signal"
|
|
|
|
# Check to see if new behaviour interferes with
|
|
# normal signal handling in inferior function calls.
|
|
gdb_test "p exceptions.raise_signal(1)" \
|
|
"To change this behavior use \"set unwind-on-signal on\".*" \
|
|
"check for unwind-on-signal on message"
|