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# Copyright 2012-2023 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/>.
# Step over breakpoints with displaced stepping on, against Valgrind.
# We can't really use displaced stepping with Valgrind, so what this
# really tests is that GDB falls back to in-line stepping
# automatically instead of getting stuck or crashing.
# Valgrind gdbserver requires gdb with xml support.
require allow_xml_test
load_lib valgrind.exp
if [is_remote target] {
# The test always runs locally.
return 0
}
standard_testfile .c
if {[build_executable "failed to build" $testfile $srcfile {debug}] == -1} {
return -1
}
if { [vgdb_start] == -1 } {
return -1
}
gdb_test_no_output "set displaced-stepping off"
gdb_breakpoint "main" "breakpoint at main"
gdb_test "continue" " stop 0 .*" "continue to main"
delete_breakpoints
set curr_stop 0
foreach displaced { "off" "on" } {
with_test_prefix "displaced $displaced" {
gdb_test_no_output "set displaced-stepping $displaced"
foreach go { "once" "twice" } {
with_test_prefix $go {
gdb_test "break" "Breakpoint .* at .*" "set breakpoint"
# Whether we should see a warning.
set should_warn [expr {$go == "once" && $displaced == "on"}]
incr curr_stop
set msg "step over breakpoint"
set pattern " stop $curr_stop .*$gdb_prompt $"
gdb_test_multiple "next" $msg {
-re "warning: disabling displaced stepping.*$pattern" {
gdb_assert $should_warn $msg
}
-re "$pattern" {
gdb_assert !$should_warn $msg
}
}
}
}
}
}
vgdb_stop
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