1 # Copyright 2003 Free Software Foundation, Inc.
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 2 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this program; if not, write to the Free Software
15 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 # This is a regression test for the following bug, as of 2003-12-12:
20 # Set a breakpoint which will be hit many times. Attach a complex set
21 # of commands to it, including a "continue" command. Run the program,
22 # so that the breakpoint is hit, its commands get executed, and the
23 # program continues and hits the breakpoint again. You will see
24 # messages like "warning: Invalid control type in command structure.",
25 # or maybe GDB will crash.
27 # When the breakpoint is hit, bpstat_stop_status copies the
28 # breakpoint's command tree to the bpstat. bpstat_do_actions then
29 # calls execute_control_command to run the commands. The 'continue'
30 # command invokes the following chain of calls:
33 # -> clear_proceed_status
35 # -> free_command_lines
36 # -> frees the commands we are currently running.
38 # When control does eventually return to execute_control_command, GDB
39 # continues to walk the tree of freed command nodes, resulting in the
40 # error messages and / or crashes.
42 # Since this bug depends on storage being reused between the time that
43 # we continue and the time that we fall back to bpstat_do_actions, the
44 # reproduction recipe is more delicate than I would like. I welcome
45 # suggestions for improving this.
50 set testfile "freebpcmd"
51 set srcfile ${testfile}.c
52 set srcfile1 ${testfile}1.c
53 set binfile ${objdir}/${subdir}/${testfile}
55 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
56 gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
61 gdb_reinitialize_dir $srcdir/$subdir
64 gdb_test "break [gdb_get_line_number "euphonium"]" "" "set breakpoint"
66 # The goal of all this is to make sure that there's plenty of memory
67 # churn, and different amounts of it each time the inferior stops;
68 # this seems to make GDB crash more reliably.
69 set lines {{if (i%2) == 0}
76 {set variable $foo = 0}
79 {set variable $foo += $j}
89 for {set i 0} {$i < [llength $lines]} {incr i} {
92 send_gdb "[lindex $lines $i]\n"
95 set reason "got top-level prompt early"
104 if {$i >= [llength $lines]} {
105 pass "send breakpoint commands"
107 fail "send breakpoint commands ($reason)"
111 gdb_test_multiple "" "run program with breakpoint commands" {
112 -re "warning: Invalid control type in command structure" {
113 kfail "gdb/1489" "run program with breakpoint commands"
115 -re "$gdb_prompt $" {
116 pass "run program with breakpoint commands"
119 kfail "gdb/1489" "run program with breakpoint commands (GDB died)"