| 1 | # Copyright (C) 2014-2018 Free Software Foundation, Inc. |
| 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 | if [target_info exists gdb,nointerrupts] { |
| 17 | verbose "Skipping double-prompt-target-event-error.exp because of nointerrupts." |
| 18 | return |
| 19 | } |
| 20 | |
| 21 | standard_testfile |
| 22 | |
| 23 | if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug] == -1} { |
| 24 | return -1 |
| 25 | } |
| 26 | |
| 27 | # Test throwing an error while GDB is handling a target event. We use |
| 28 | # a ctrl-c/quit in a pagination prompt to emulate an error. COMMAND |
| 29 | # is either "continue" or "wrapcont". The latter is a continue issued |
| 30 | # from a user-defined command. That exercises the case of the |
| 31 | # interpreter forced sync, which was the case that originally had a |
| 32 | # bug. |
| 33 | |
| 34 | proc cancel_pagination_in_target_event { command } { |
| 35 | global binfile srcfile |
| 36 | global gdb_prompt pagination_prompt |
| 37 | |
| 38 | set testline [gdb_get_line_number "after sleep"] |
| 39 | |
| 40 | with_test_prefix "ctrlc target event: $command" { |
| 41 | clean_restart $binfile |
| 42 | |
| 43 | if ![runto_main] then { |
| 44 | fail "can't run to main" |
| 45 | return 0 |
| 46 | } |
| 47 | |
| 48 | gdb_test "b $srcfile:$testline" \ |
| 49 | "Breakpoint .*$srcfile, line $testline.*" \ |
| 50 | "set breakpoint" |
| 51 | |
| 52 | gdb_test_no_output "set height 2" |
| 53 | |
| 54 | if { $command == "wrapcont" } { |
| 55 | gdb_test_multiple "define wrapcont" "define user command: wrapcont" { |
| 56 | -re "Type commands for definition of \"wrapcont\".\r\nEnd with a line saying just \"end\".\r\n>$" { |
| 57 | # Note that "Continuing." is ommitted when |
| 58 | # "continue" is issued from a user-defined |
| 59 | # command. Issue it ourselves. |
| 60 | gdb_test "echo Continuing\.\ncontinue\nend" "" \ |
| 61 | "define user command: wrapcont" |
| 62 | } |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | # Wait for pagination prompt after the "Continuing" line, |
| 67 | # indicating the program was running and then stopped. |
| 68 | set saw_continuing 0 |
| 69 | set test "continue to pagination" |
| 70 | gdb_test_multiple "$command" $test { |
| 71 | -re "$pagination_prompt$" { |
| 72 | if {$saw_continuing} { |
| 73 | pass $test |
| 74 | } else { |
| 75 | send_gdb "\n" |
| 76 | exp_continue |
| 77 | } |
| 78 | } |
| 79 | -re "Continuing" { |
| 80 | set saw_continuing 1 |
| 81 | exp_continue |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | # We're now stopped in a pagination query while handling a |
| 86 | # target event (printing where the program stopped). Quitting |
| 87 | # the pagination should result in only one prompt being |
| 88 | # output. |
| 89 | send_gdb "\003p 1\n" |
| 90 | |
| 91 | # Note gdb_test_multiple has a default match for the prompt, |
| 92 | # which issues a FAIL. Consume the first prompt. |
| 93 | set test "first prompt" |
| 94 | gdb_test_multiple "" $test { |
| 95 | -re "$gdb_prompt" { |
| 96 | pass "first prompt" |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | # We should only see one prompt more, and it should be |
| 101 | # preceeded by print's output. |
| 102 | set test "no double prompt" |
| 103 | gdb_test_multiple "" $test { |
| 104 | -re "$gdb_prompt.*$gdb_prompt $" { |
| 105 | # The bug is present, and expect managed to read |
| 106 | # enough characters into the buffer to fill it with |
| 107 | # both prompts. |
| 108 | fail $test |
| 109 | } |
| 110 | -re " = 1\r\n$gdb_prompt $" { |
| 111 | pass $test |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | # In case the board file wants to send further commands. |
| 116 | gdb_test_no_output "set height unlimited" |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | foreach variant { "continue" "wrapcont" } { |
| 121 | cancel_pagination_in_target_event $variant |
| 122 | } |