| 1 | ## compare_shells: dash bash mksh ash
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| 2 | ## oils_failures_allowed: 1
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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 ok
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| 9 | ## STDOUT:
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| 10 | ok
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| 11 | hi
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| 12 | ## END
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| 13 |
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| 14 | #### Register invalid trap
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| 15 | trap 'foo' SIGINVALID
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| 16 | ## status: 1
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| 17 |
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| 18 | #### Remove invalid trap
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| 19 | trap - SIGINVALID
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| 20 | ## status: 1
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| 21 |
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| 22 | #### SIGINT and INT are aliases
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| 23 | trap - SIGINT
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| 24 | echo $?
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| 25 | trap - INT
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| 26 | echo $?
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| 27 | ## STDOUT:
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| 28 | 0
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| 29 | 0
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| 30 | ## END
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| 31 | ## N-I dash STDOUT:
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| 32 | 1
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| 33 | 0
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| 34 | ## END
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| 35 |
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| 36 | #### trap without args prints traps, like trap -p
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| 37 | case $SH in dash) exit ;; esac
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| 38 |
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| 39 | if false; then
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| 40 | # bash breaks the display across lines
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| 41 | trap "true
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| 42 | false" EXIT
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| 43 | fi
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| 44 |
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| 45 | $SH -c '
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| 46 |
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| 47 | trap "true" EXIT
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| 48 |
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| 49 | echo status=$?
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| 50 | trap | grep EXIT
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| 51 | echo status=$?
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| 52 | '
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| 53 |
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| 54 | ## STDOUT:
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| 55 | status=0
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| 56 | trap -- 'true' EXIT
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| 57 | status=0
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| 58 | ## END
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| 59 |
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| 60 | ## BUG mksh/ash STDOUT:
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| 61 | status=0
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| 62 | status=1
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| 63 | ## END
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| 64 |
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| 65 | ## N-I dash STDOUT:
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| 66 | ## END
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| 67 |
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| 68 |
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| 69 | #### trap 'echo hi' KILL (regression test, caught by smoosh suite)
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| 70 | trap 'echo hi' 9
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| 71 | echo status=$?
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| 72 |
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| 73 | trap 'echo hi' KILL
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| 74 | echo status=$?
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| 75 |
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| 76 | trap 'echo hi' STOP
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| 77 | echo status=$?
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| 78 |
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| 79 | trap 'echo hi' TERM
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| 80 | echo status=$?
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| 81 |
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| 82 | ## STDOUT:
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| 83 | status=0
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| 84 | status=0
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| 85 | status=0
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| 86 | status=0
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| 87 | ## END
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| 88 | ## OK osh STDOUT:
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| 89 | status=1
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| 90 | status=1
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| 91 | status=1
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| 92 | status=0
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| 93 | ## END
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| 94 |
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| 95 | #### Invalid trap invocation
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| 96 | trap 'foo'
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| 97 | echo status=$?
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| 98 | ## STDOUT:
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| 99 | status=2
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| 100 | ## END
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| 101 | ## OK dash/ash STDOUT:
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| 102 | status=1
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| 103 | ## END
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| 104 | ## BUG mksh STDOUT:
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| 105 | status=0
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| 106 | ## END
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| 107 |
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| 108 | #### exit 1 when trap code string is invalid
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| 109 | # All shells spew warnings to stderr, but don't actually exit! Bad!
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| 110 | trap 'echo <' EXIT
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| 111 | echo status=$?
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| 112 | ## STDOUT:
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| 113 | status=1
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| 114 | ## END
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| 115 |
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| 116 | ## BUG mksh status: 1
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| 117 | ## BUG mksh STDOUT:
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| 118 | status=0
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| 119 | ## END
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| 120 |
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| 121 | ## BUG ash status: 2
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| 122 | ## BUG ash STDOUT:
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| 123 | status=0
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| 124 | ## END
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| 125 |
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| 126 | ## BUG dash/bash status: 0
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| 127 | ## BUG dash/bash STDOUT:
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| 128 | status=0
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| 129 | ## END
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| 130 |
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| 131 |
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| 132 | #### trap EXIT calling exit
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| 133 | cleanup() {
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| 134 | echo "cleanup [$@]"
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| 135 | exit 42
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| 136 | }
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| 137 | trap 'cleanup x y z' EXIT
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| 138 | ## stdout: cleanup [x y z]
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| 139 | ## status: 42
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| 140 |
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| 141 | #### trap EXIT return status ignored
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| 142 | cleanup() {
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| 143 | echo "cleanup [$@]"
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| 144 | return 42
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| 145 | }
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| 146 | trap 'cleanup x y z' EXIT
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| 147 | ## stdout: cleanup [x y z]
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| 148 | ## status: 0
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| 149 |
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| 150 | #### trap EXIT with PARSE error
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| 151 | trap 'echo FAILED' EXIT
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| 152 | for
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| 153 | ## stdout: FAILED
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| 154 | ## status: 2
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| 155 | ## OK mksh status: 1
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| 156 |
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| 157 | #### trap EXIT with PARSE error and explicit exit
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| 158 | trap 'echo FAILED; exit 0' EXIT
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| 159 | for
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| 160 | ## stdout: FAILED
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| 161 | ## status: 0
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| 162 |
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| 163 | #### trap EXIT with explicit exit
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| 164 | trap 'echo IN TRAP; echo $stdout' EXIT
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| 165 | stdout=FOO
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| 166 | exit 42
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| 167 |
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| 168 | ## status: 42
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| 169 | ## STDOUT:
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| 170 | IN TRAP
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| 171 | FOO
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| 172 | ## END
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| 173 |
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| 174 | #### trap EXIT with command sub / subshell / pipeline
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| 175 | trap 'echo EXIT TRAP' EXIT
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| 176 |
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| 177 | echo $(echo command sub)
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| 178 |
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| 179 | ( echo subshell )
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| 180 |
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| 181 | echo pipeline | cat
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| 182 |
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| 183 | ## STDOUT:
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| 184 | command sub
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| 185 | subshell
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| 186 | pipeline
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| 187 | EXIT TRAP
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| 188 | ## END
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| 189 |
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| 190 | #### trap 0 is equivalent to EXIT
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| 191 | # not sure why this is, but POSIX wants it.
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| 192 | trap 'echo EXIT' 0
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| 193 | echo status=$?
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| 194 | trap - EXIT
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| 195 | echo status=$?
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| 196 | ## status: 0
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| 197 | ## STDOUT:
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| 198 | status=0
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| 199 | status=0
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| 200 | ## END
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| 201 |
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| 202 | #### trap 1 is equivalent to SIGHUP; HUP is equivalent to SIGHUP
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| 203 | trap 'echo HUP' SIGHUP
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| 204 | echo status=$?
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| 205 | trap 'echo HUP' HUP
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| 206 | echo status=$?
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| 207 | trap 'echo HUP' 1
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| 208 | echo status=$?
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| 209 | trap - HUP
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| 210 | echo status=$?
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| 211 | ## status: 0
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| 212 | ## STDOUT:
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| 213 | status=0
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| 214 | status=0
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| 215 | status=0
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| 216 | status=0
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| 217 | ## END
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| 218 | ## N-I dash STDOUT:
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| 219 | status=1
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| 220 | status=0
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| 221 | status=0
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| 222 | status=0
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| 223 | ## END
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| 224 |
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| 225 | #### eval in the exit trap (regression for issue #293)
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| 226 | trap 'eval "echo hi"' 0
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| 227 | ## STDOUT:
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| 228 | hi
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| 229 | ## END
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| 230 |
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| 231 |
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| 232 | #### exit codes for traps are isolated
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| 233 |
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| 234 | trap 'echo USR1 trap status=$?; ( exit 42 )' USR1
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| 235 |
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| 236 | echo before=$?
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| 237 |
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| 238 | # Equivalent to 'kill -USR1 $$' except OSH doesn't have "kill" yet.
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| 239 | # /bin/kill doesn't exist on Debian unless 'procps' is installed.
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| 240 | sh -c "kill -USR1 $$"
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| 241 | echo after=$?
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| 242 |
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| 243 | ## STDOUT:
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| 244 | before=0
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| 245 | USR1 trap status=0
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| 246 | after=0
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| 247 | ## END
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| 248 |
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| 249 | #### traps are cleared in subshell (started with &)
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| 250 |
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| 251 | # Test with SIGURG because the default handler is SIG_IGN
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| 252 | #
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| 253 | # If we use SIGUSR1, I think the shell reverts to killing the process
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| 254 |
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| 255 | # https://man7.org/linux/man-pages/man7/signal.7.html
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| 256 |
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| 257 | trap 'echo SIGURG' URG
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| 258 |
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| 259 | kill -URG $$
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| 260 |
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| 261 | # Hm trap doesn't happen here
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| 262 | { echo begin child; sleep 0.1; echo end child; } &
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| 263 | kill -URG $!
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| 264 | wait
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| 265 | echo "wait status $?"
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| 266 |
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| 267 | # In the CI, mksh sometimes gives:
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| 268 | #
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| 269 | # USR1
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| 270 | # begin child
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| 271 | # done
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| 272 | #
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| 273 | # leaving off 'end child'. This seems like a BUG to me?
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| 274 |
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| 275 | ## STDOUT:
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| 276 | SIGURG
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| 277 | begin child
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| 278 | end child
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| 279 | wait status 0
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| 280 | ## END
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| 281 |
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| 282 | #### trap USR1, sleep, SIGINT: non-interactively
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| 283 |
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| 284 | $REPO_ROOT/spec/testdata/builtin-trap-usr1.sh
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| 285 |
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| 286 | ## STDOUT:
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| 287 | usr1
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| 288 | status=0
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| 289 | ## END
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| 290 |
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| 291 | #### trap INT, sleep, SIGINT: non-interactively
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| 292 |
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| 293 | # mksh behaves differently in CI -- maybe when it's not connected to a
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| 294 | # terminal?
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| 295 | case $SH in mksh) echo mksh; exit ;; esac
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| 296 |
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| 297 | $REPO_ROOT/spec/testdata/builtin-trap-int.sh
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| 298 |
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| 299 | ## STDOUT:
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| 300 | status=0
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| 301 | ## END
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| 302 |
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| 303 | ## OK mksh STDOUT:
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| 304 | mksh
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| 305 | ## END
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| 306 |
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| 307 | # Not sure why other shells differ here, but running the trap is consistent
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| 308 | # with interactive cases in test/bugs.sh
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| 309 |
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| 310 | ## OK osh STDOUT:
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| 311 | int
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| 312 | status=0
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| 313 | ## END
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| 314 |
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| 315 | #### trap EXIT, sleep, SIGINT: non-interactively
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| 316 |
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| 317 | $REPO_ROOT/spec/testdata/builtin-trap-exit.sh
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| 318 |
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| 319 | ## STDOUT:
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| 320 | on exit
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| 321 | status=0
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| 322 | ## END
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| 323 |
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| 324 | #### Remove trap with an unsigned integer
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| 325 |
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| 326 | $SH -e -c '
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| 327 | trap "echo noprint" EXIT
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| 328 | trap 0 EXIT
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| 329 | echo ok0
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| 330 | '
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| 331 | echo
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| 332 |
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| 333 | $SH -e -c '
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| 334 | trap "echo noprint" EXIT
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| 335 | trap " 42 " EXIT
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| 336 | echo ok42space
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| 337 | '
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| 338 | echo
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| 339 |
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| 340 | # corner case: sometimes 07 is treated as octal, but not here
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| 341 | $SH -e -c '
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| 342 | trap "echo noprint" EXIT
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| 343 | trap 07 EXIT
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| 344 | echo ok07
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| 345 | '
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| 346 | echo
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| 347 |
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| 348 | $SH -e -c '
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| 349 | trap "echo trap-exit" EXIT
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| 350 | trap -1 EXIT
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| 351 | echo bad
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| 352 | '
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| 353 | if test $? -ne 0; then
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| 354 | echo failure
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| 355 | fi
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| 356 |
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| 357 | ## STDOUT:
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| 358 | ok0
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| 359 |
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| 360 | ok42space
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| 361 |
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| 362 | ok07
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| 363 |
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| 364 | trap-exit
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| 365 | failure
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| 366 | ## END
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