mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-27 04:52:05 +08:00
144 lines
4.8 KiB
Plaintext
144 lines
4.8 KiB
Plaintext
# Copyright 2009-2018 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.
|
|
|
|
if { [skip_cplus_tests] } { continue }
|
|
|
|
if [target_info exists gdb,nosignals] {
|
|
verbose "Skipping gdb2495.exp because of nosignals."
|
|
continue
|
|
}
|
|
|
|
# On SPU this test fails because the executable exceeds local storage size.
|
|
if { [istarget "spu*-*-*"] } {
|
|
return 0
|
|
}
|
|
|
|
standard_testfile .cc
|
|
|
|
# Create and source the file that provides information about the compiler
|
|
# used to compile the test case.
|
|
if [get_compiler_info "c++"] {
|
|
return -1
|
|
}
|
|
|
|
# Some targets can't do function calls, so don't even bother with this
|
|
# test.
|
|
if [target_info exists gdb,cannot_call_functions] {
|
|
unsupported "this target can not call functions"
|
|
continue
|
|
}
|
|
|
|
if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug c++}]} {
|
|
return -1
|
|
}
|
|
|
|
if ![runto_main] then {
|
|
perror "couldn't run to main"
|
|
continue
|
|
}
|
|
|
|
# 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] then {
|
|
perror "couldn't run to main"
|
|
continue
|
|
}
|
|
|
|
|
|
# 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 unwindonsignal on"
|
|
|
|
# Check that it is turned on.
|
|
gdb_test "show unwindonsignal" \
|
|
"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)" \
|
|
"To change this behavior use \"set unwindonsignal off\".*"
|
|
|
|
# And reverse - turn off again.
|
|
gdb_test_no_output "set unwindonsignal off"
|
|
|
|
# Check that it is actually turned off.
|
|
gdb_test "show unwindonsignal" \
|
|
"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 unwindonsignal on\".*"
|