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1 | # Copyright 2003, 2007, 2008, 2009, 2010, 2011 |
2 | # Free Software Foundation, Inc. | |
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3 | |
4 | # This program is free software; you can redistribute it and/or modify | |
5 | # it under the terms of the GNU General Public License as published by | |
e22f8b7c | 6 | # the Free Software Foundation; either version 3 of the License, or |
1b3bb3d0 | 7 | # (at your option) any later version. |
e22f8b7c | 8 | # |
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9 | # This program is distributed in the hope that it will be useful, |
10 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | # GNU General Public License for more details. | |
e22f8b7c | 13 | # |
1b3bb3d0 | 14 | # You should have received a copy of the GNU General Public License |
e22f8b7c | 15 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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16 | |
17 | ||
18 | # This is a regression test for the following bug, as of 2003-12-12: | |
19 | # | |
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. | |
26 | # | |
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: | |
31 | # | |
32 | # continue_command | |
33 | # -> clear_proceed_status | |
34 | # -> bpstat_clear | |
35 | # -> free_command_lines | |
36 | # -> frees the commands we are currently running. | |
37 | # | |
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. | |
41 | # | |
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. | |
46 | ||
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47 | |
48 | set testfile "freebpcmd" | |
49 | set srcfile ${testfile}.c | |
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50 | set binfile ${objdir}/${subdir}/${testfile} |
51 | ||
52 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { | |
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53 | untested freebpcmd.exp |
54 | return -1 | |
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55 | } |
56 | ||
57 | gdb_exit | |
58 | gdb_start | |
59 | gdb_reinitialize_dir $srcdir/$subdir | |
60 | gdb_load ${binfile} | |
61 | ||
f6978de9 MS |
62 | gdb_test "break ${srcfile}:[gdb_get_line_number "euphonium"]" ".*" \ |
63 | "set breakpoint" | |
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64 | |
65 | # The goal of all this is to make sure that there's plenty of memory | |
66 | # churn, and different amounts of it each time the inferior stops; | |
67 | # this seems to make GDB crash more reliably. | |
68 | set lines {{if (i%2) == 0} | |
69 | {echo "even "} | |
70 | {print i} | |
71 | {else} | |
72 | {echo "odd "} | |
73 | {print i} | |
74 | {end} | |
75 | {set variable $foo = 0} | |
76 | {set variable $j = 0} | |
77 | {while $j < i} | |
78 | {set variable $foo += $j} | |
79 | {set variable $j++} | |
80 | {end} | |
81 | {print $foo} | |
82 | {if i != 40} | |
83 | {c} | |
84 | {end} | |
85 | {end}} | |
86 | ||
87 | send_gdb "commands\n" | |
88 | for {set i 0} {$i < [llength $lines]} {incr i} { | |
89 | gdb_expect { | |
90 | -re ".*>" { | |
91 | send_gdb "[lindex $lines $i]\n" | |
92 | } | |
93 | -re "$gdb_prompt $" { | |
94 | set reason "got top-level prompt early" | |
95 | break | |
96 | } | |
97 | timeout { | |
98 | set reason "timeout" | |
99 | break | |
100 | } | |
101 | } | |
102 | } | |
103 | if {$i >= [llength $lines]} { | |
104 | pass "send breakpoint commands" | |
105 | } else { | |
106 | fail "send breakpoint commands ($reason)" | |
107 | } | |
108 | ||
109 | gdb_run_cmd | |
c65016bd | 110 | |
97f2ed50 | 111 | set prev_timeout $timeout |
c65016bd MK |
112 | set timeout 120 |
113 | ||
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114 | gdb_test_multiple "" "run program with breakpoint commands" { |
115 | -re "warning: Invalid control type in command structure" { | |
80e4b428 | 116 | kfail "gdb/1489" "run program with breakpoint commands" |
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117 | } |
118 | -re "$gdb_prompt $" { | |
119 | pass "run program with breakpoint commands" | |
120 | } | |
121 | eof { | |
80e4b428 | 122 | kfail "gdb/1489" "run program with breakpoint commands (GDB died)" |
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123 | } |
124 | } | |
97f2ed50 DJ |
125 | |
126 | set timeout $prev_timeout |