e22f8b7c8c
Switch the license of all .f and .f90 files to GPLv3.
Switch the license of all .s and .S files to GPLv3.
124 lines
3.8 KiB
Text
124 lines
3.8 KiB
Text
# Copyright 2003, 2007 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This is a regression test for the following bug, as of 2003-12-12:
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#
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# Set a breakpoint which will be hit many times. Attach a complex set
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# of commands to it, including a "continue" command. Run the program,
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# so that the breakpoint is hit, its commands get executed, and the
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# program continues and hits the breakpoint again. You will see
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# messages like "warning: Invalid control type in command structure.",
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# or maybe GDB will crash.
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#
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# When the breakpoint is hit, bpstat_stop_status copies the
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# breakpoint's command tree to the bpstat. bpstat_do_actions then
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# calls execute_control_command to run the commands. The 'continue'
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# command invokes the following chain of calls:
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#
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# continue_command
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# -> clear_proceed_status
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# -> bpstat_clear
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# -> free_command_lines
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# -> frees the commands we are currently running.
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#
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# When control does eventually return to execute_control_command, GDB
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# continues to walk the tree of freed command nodes, resulting in the
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# error messages and / or crashes.
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#
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# Since this bug depends on storage being reused between the time that
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# we continue and the time that we fall back to bpstat_do_actions, the
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# reproduction recipe is more delicate than I would like. I welcome
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# suggestions for improving this.
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set prms_id 0
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set bug_id 0
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set testfile "freebpcmd"
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set srcfile ${testfile}.c
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set srcfile1 ${testfile}1.c
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set binfile ${objdir}/${subdir}/${testfile}
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
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untested freebpcmd.exp
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return -1
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}
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}
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gdb_test "break [gdb_get_line_number "euphonium"]" "" "set breakpoint"
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# The goal of all this is to make sure that there's plenty of memory
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# churn, and different amounts of it each time the inferior stops;
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# this seems to make GDB crash more reliably.
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set lines {{if (i%2) == 0}
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{echo "even "}
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{print i}
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{else}
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{echo "odd "}
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{print i}
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{end}
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{set variable $foo = 0}
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{set variable $j = 0}
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{while $j < i}
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{set variable $foo += $j}
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{set variable $j++}
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{end}
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{print $foo}
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{if i != 40}
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{c}
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{end}
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{end}}
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send_gdb "commands\n"
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for {set i 0} {$i < [llength $lines]} {incr i} {
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gdb_expect {
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-re ".*>" {
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send_gdb "[lindex $lines $i]\n"
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}
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-re "$gdb_prompt $" {
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set reason "got top-level prompt early"
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break
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}
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timeout {
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set reason "timeout"
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break
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}
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}
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}
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if {$i >= [llength $lines]} {
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pass "send breakpoint commands"
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} else {
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fail "send breakpoint commands ($reason)"
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}
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gdb_run_cmd
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set timeout 120
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gdb_test_multiple "" "run program with breakpoint commands" {
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-re "warning: Invalid control type in command structure" {
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kfail "gdb/1489" "run program with breakpoint commands"
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}
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-re "$gdb_prompt $" {
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pass "run program with breakpoint commands"
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}
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eof {
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kfail "gdb/1489" "run program with breakpoint commands (GDB died)"
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}
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}
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