Commit | Line | Data |
---|---|---|
b811d2c2 | 1 | # Copyright 2014-2020 Free Software Foundation, Inc. |
7180e04a PA |
2 | |
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 3 of the License, or | |
6 | # (at your option) any later version. | |
7 | # | |
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. | |
12 | # | |
13 | # You should have received a copy of the GNU General Public License | |
14 | # along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
15 | ||
16 | # Verify that GDB waits for the "attach" command to finish before | |
17 | # processing the following command. | |
18 | # | |
19 | # GDB used to have a race where on async targets, in the small window | |
20 | # between the attach request and the initial stop for the attach, GDB | |
21 | # was still processing user input. | |
22 | # | |
23 | # The issue was originally detected with: | |
24 | # | |
25 | # echo -e "attach PID\nset xxx=1" | gdb | |
26 | # | |
27 | # In that scenario, stdin is not a tty, which disables readline. | |
28 | # Explicitly turning off editing exercises the same code path, and is | |
29 | # simpler to do, so we test with both editing on and off. | |
30 | ||
31 | # The test uses the "attach" command. | |
079670b9 | 32 | if [use_gdb_stub] { |
7180e04a PA |
33 | return |
34 | } | |
35 | ||
36 | standard_testfile | |
37 | ||
38 | if {[build_executable "failed to build" $testfile $srcfile debug]} { | |
39 | return -1 | |
40 | } | |
41 | ||
42 | # Start the program running, and return its PID, ready for attaching. | |
43 | ||
44 | proc start_program {binfile} { | |
45 | global gdb_prompt | |
46 | global decimal | |
47 | ||
48 | clean_restart $binfile | |
49 | ||
50 | if ![runto setup_done] then { | |
bc6c7af4 | 51 | fail "can't run to setup_done" |
7180e04a PA |
52 | return 0 |
53 | } | |
54 | ||
55 | # Get the PID of the test process. | |
56 | set testpid "" | |
57 | set test "get inferior process ID" | |
58 | gdb_test_multiple "p mypid" $test { | |
59 | -re " = ($decimal)\r\n$gdb_prompt $" { | |
60 | set testpid $expect_out(1,string) | |
61 | pass $test | |
62 | } | |
63 | } | |
64 | ||
65 | gdb_test "detach" "Detaching from program: .*" | |
66 | ||
67 | if {$testpid == ""} { | |
68 | return | |
69 | } | |
70 | ||
71 | return $testpid | |
72 | } | |
73 | ||
74 | # Do test proper. EDITING indicates whether "set editing" is on or | |
75 | # off. | |
76 | ||
77 | proc test { editing } { | |
78 | global gdb_prompt | |
79 | global binfile | |
80 | global decimal | |
81 | ||
82 | with_test_prefix "editing $editing" { | |
83 | ||
84 | set testpid [start_program $binfile] | |
85 | if {$testpid == ""} { | |
86 | return | |
87 | } | |
88 | ||
89 | # Enable/disable readline. | |
90 | gdb_test_no_output "set editing $editing" | |
91 | ||
92 | # Send both commands at once. | |
93 | send_gdb "attach $testpid\nprint should_exit = 1\n" | |
94 | ||
95 | # Use gdb_expect directly instead of gdb_test_multiple to | |
96 | # avoid races with the double prompt. | |
97 | set test "attach and print" | |
98 | gdb_expect { | |
99 | -re "Attaching to program.*process $testpid\r\n.*$gdb_prompt.*$decimal = 1\r\n$gdb_prompt $" { | |
100 | pass "$test" | |
101 | } | |
102 | timeout { | |
103 | fail "$test (timeout)" | |
104 | } | |
105 | } | |
106 | ||
107 | # As we've used attach, on quit, we'll detach from the | |
108 | # program. Explicitly kill it in case we failed above. | |
109 | gdb_test "kill" \ | |
110 | "" \ | |
111 | "after attach, exit" \ | |
112 | "Kill the program being debugged.*y or n. $" \ | |
113 | "y" | |
114 | } | |
115 | } | |
116 | ||
117 | foreach editing {"on" "off"} { | |
118 | test $editing | |
119 | } |