| 1 | ## compare_shells: dash bash mksh
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| 2 | ## oils_failures_allowed: 0
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| 3 |
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| 4 | # builtin-trap.test.sh
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| 5 |
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| 6 | #### trap accepts/ignores --
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| 7 | trap -- 'echo hi' EXIT
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| 8 | echo done
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| 9 | ## STDOUT:
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| 10 | done
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| 11 | hi
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| 12 | ## END
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| 13 |
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| 14 | #### trap 'echo hi' KILL (regression test, caught by smoosh suite)
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| 15 | trap 'echo hi' 9
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| 16 | echo status=$?
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| 17 | trap 'echo hi' KILL
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| 18 | echo status=$?
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| 19 | trap 'echo hi' STOP
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| 20 | echo status=$?
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| 21 | trap 'echo hi' TERM
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| 22 | echo status=$?
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| 23 | ## STDOUT:
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| 24 | status=0
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| 25 | status=0
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| 26 | status=0
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| 27 | status=0
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| 28 | ## END
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| 29 | ## OK osh STDOUT:
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| 30 | status=1
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| 31 | status=1
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| 32 | status=1
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| 33 | status=0
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| 34 | ## END
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| 35 |
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| 36 | #### Register invalid trap
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| 37 | trap 'foo' SIGINVALID
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| 38 | ## status: 1
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| 39 |
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| 40 | #### Remove invalid trap
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| 41 | trap - SIGINVALID
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| 42 | ## status: 1
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| 43 |
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| 44 | #### SIGINT and INT are aliases
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| 45 | trap - SIGINT
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| 46 | echo $?
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| 47 | trap - INT
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| 48 | echo $?
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| 49 | ## STDOUT:
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| 50 | 0
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| 51 | 0
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| 52 | ## END
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| 53 | ## N-I dash STDOUT:
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| 54 | 1
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| 55 | 0
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| 56 | ## END
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| 57 |
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| 58 | #### Invalid trap invocation
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| 59 | trap 'foo'
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| 60 | echo status=$?
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| 61 | ## stdout: status=2
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| 62 | ## OK dash stdout: status=1
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| 63 | ## BUG mksh stdout: status=0
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| 64 |
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| 65 | #### exit 1 when trap code string is invalid
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| 66 | # All shells spew warnings to stderr, but don't actually exit! Bad!
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| 67 | trap 'echo <' EXIT
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| 68 | echo status=$?
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| 69 | ## stdout: status=1
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| 70 | ## BUG mksh status: 1
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| 71 | ## BUG mksh stdout: status=0
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| 72 | ## BUG dash/bash status: 0
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| 73 | ## BUG dash/bash stdout: status=0
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| 74 |
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| 75 | #### trap EXIT calling exit
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| 76 | cleanup() {
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| 77 | echo "cleanup [$@]"
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| 78 | exit 42
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| 79 | }
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| 80 | trap 'cleanup x y z' EXIT
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| 81 | ## stdout: cleanup [x y z]
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| 82 | ## status: 42
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| 83 |
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| 84 | #### trap EXIT return status ignored
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| 85 | cleanup() {
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| 86 | echo "cleanup [$@]"
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| 87 | return 42
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| 88 | }
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| 89 | trap 'cleanup x y z' EXIT
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| 90 | ## stdout: cleanup [x y z]
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| 91 | ## status: 0
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| 92 |
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| 93 | #### trap EXIT with PARSE error
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| 94 | trap 'echo FAILED' EXIT
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| 95 | for
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| 96 | ## stdout: FAILED
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| 97 | ## status: 2
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| 98 | ## OK mksh status: 1
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| 99 |
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| 100 | #### trap EXIT with PARSE error and explicit exit
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| 101 | trap 'echo FAILED; exit 0' EXIT
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| 102 | for
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| 103 | ## stdout: FAILED
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| 104 | ## status: 0
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| 105 |
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| 106 | #### trap EXIT with explicit exit
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| 107 | trap 'echo IN TRAP; echo $stdout' EXIT
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| 108 | stdout=FOO
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| 109 | exit 42
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| 110 |
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| 111 | ## status: 42
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| 112 | ## STDOUT:
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| 113 | IN TRAP
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| 114 | FOO
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| 115 | ## END
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| 116 |
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| 117 | #### trap EXIT with command sub / subshell / pipeline
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| 118 | trap 'echo EXIT TRAP' EXIT
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| 119 |
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| 120 | echo $(echo command sub)
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| 121 |
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| 122 | ( echo subshell )
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| 123 |
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| 124 | echo pipeline | cat
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| 125 |
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| 126 | ## STDOUT:
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| 127 | command sub
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| 128 | subshell
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| 129 | pipeline
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| 130 | EXIT TRAP
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| 131 | ## END
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| 132 |
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| 133 | #### trap 0 is equivalent to EXIT
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| 134 | # not sure why this is, but POSIX wants it.
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| 135 | trap 'echo EXIT' 0
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| 136 | echo status=$?
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| 137 | trap - EXIT
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| 138 | echo status=$?
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| 139 | ## status: 0
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| 140 | ## STDOUT:
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| 141 | status=0
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| 142 | status=0
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| 143 | ## END
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| 144 |
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| 145 | #### trap 1 is equivalent to SIGHUP; HUP is equivalent to SIGHUP
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| 146 | trap 'echo HUP' SIGHUP
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| 147 | echo status=$?
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| 148 | trap 'echo HUP' HUP
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| 149 | echo status=$?
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| 150 | trap 'echo HUP' 1
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| 151 | echo status=$?
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| 152 | trap - HUP
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| 153 | echo status=$?
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| 154 | ## status: 0
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| 155 | ## STDOUT:
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| 156 | status=0
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| 157 | status=0
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| 158 | status=0
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| 159 | status=0
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| 160 | ## END
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| 161 | ## N-I dash STDOUT:
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| 162 | status=1
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| 163 | status=0
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| 164 | status=0
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| 165 | status=0
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| 166 | ## END
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| 167 |
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| 168 | #### eval in the exit trap (regression for issue #293)
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| 169 | trap 'eval "echo hi"' 0
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| 170 | ## STDOUT:
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| 171 | hi
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| 172 | ## END
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| 173 |
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| 174 |
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| 175 | #### exit codes for traps are isolated
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| 176 |
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| 177 | trap 'echo USR1 trap status=$?; ( exit 42 )' USR1
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| 178 |
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| 179 | echo before=$?
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| 180 |
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| 181 | # Equivalent to 'kill -USR1 $$' except OSH doesn't have "kill" yet.
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| 182 | # /bin/kill doesn't exist on Debian unless 'procps' is installed.
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| 183 | sh -c "kill -USR1 $$"
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| 184 | echo after=$?
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| 185 |
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| 186 | ## STDOUT:
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| 187 | before=0
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| 188 | USR1 trap status=0
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| 189 | after=0
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| 190 | ## END
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| 191 |
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| 192 | #### traps are cleared in subshell (started with &)
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| 193 |
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| 194 | # Test with SIGURG because the default handler is SIG_IGN
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| 195 | #
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| 196 | # If we use SIGUSR1, I think the shell reverts to killing the process
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| 197 |
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| 198 | # https://man7.org/linux/man-pages/man7/signal.7.html
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| 199 |
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| 200 | trap 'echo SIGURG' URG
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| 201 |
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| 202 | kill -URG $$
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| 203 |
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| 204 | # Hm trap doesn't happen here
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| 205 | { echo begin child; sleep 0.1; echo end child; } &
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| 206 | kill -URG $!
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| 207 | wait
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| 208 | echo "wait status $?"
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| 209 |
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| 210 | # In the CI, mksh sometimes gives:
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| 211 | #
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| 212 | # USR1
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| 213 | # begin child
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| 214 | # done
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| 215 | #
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| 216 | # leaving off 'end child'. This seems like a BUG to me?
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| 217 |
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| 218 | ## STDOUT:
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| 219 | SIGURG
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| 220 | begin child
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| 221 | end child
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| 222 | wait status 0
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| 223 | ## END
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