| 1 | ## compare_shells: dash bash mksh ash
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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=$?
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| 17 |
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| 18 | trap 'echo hi' KILL
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| 19 | echo status=$?
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| 20 |
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| 21 | trap 'echo hi' STOP
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| 22 | echo status=$?
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| 23 |
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| 24 | trap 'echo hi' TERM
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| 25 | echo status=$?
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| 26 |
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| 27 | ## STDOUT:
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| 28 | status=0
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| 29 | status=0
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| 30 | status=0
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| 31 | status=0
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| 32 | ## END
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| 33 | ## OK osh STDOUT:
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| 34 | status=1
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| 35 | status=1
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| 36 | status=1
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| 37 | status=0
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| 38 | ## END
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| 39 |
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| 40 | #### Register invalid trap
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| 41 | trap 'foo' SIGINVALID
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| 42 | ## status: 1
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| 43 |
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| 44 | #### Remove invalid trap
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| 45 | trap - SIGINVALID
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| 46 | ## status: 1
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| 47 |
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| 48 | #### SIGINT and INT are aliases
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| 49 | trap - SIGINT
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| 50 | echo $?
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| 51 | trap - INT
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| 52 | echo $?
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| 53 | ## STDOUT:
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| 54 | 0
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| 55 | 0
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| 56 | ## END
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| 57 | ## N-I dash STDOUT:
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| 58 | 1
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| 59 | 0
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| 60 | ## END
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| 61 |
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| 62 | #### Invalid trap invocation
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| 63 | trap 'foo'
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| 64 | echo status=$?
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| 65 | ## STDOUT:
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| 66 | status=2
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| 67 | ## END
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| 68 | ## OK dash/ash STDOUT:
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| 69 | status=1
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| 70 | ## END
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| 71 | ## BUG mksh STDOUT:
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| 72 | status=0
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| 73 | ## END
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| 74 |
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| 75 | #### exit 1 when trap code string is invalid
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| 76 | # All shells spew warnings to stderr, but don't actually exit! Bad!
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| 77 | trap 'echo <' EXIT
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| 78 | echo status=$?
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| 79 | ## STDOUT:
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| 80 | status=1
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| 81 | ## END
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| 82 |
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| 83 | ## BUG mksh status: 1
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| 84 | ## BUG mksh STDOUT:
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| 85 | status=0
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| 86 | ## END
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| 87 |
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| 88 | ## BUG ash status: 2
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| 89 | ## BUG ash STDOUT:
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| 90 | status=0
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| 91 | ## END
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| 92 |
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| 93 | ## BUG dash/bash status: 0
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| 94 | ## BUG dash/bash STDOUT:
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| 95 | status=0
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| 96 | ## END
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| 97 |
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| 98 |
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| 99 | #### trap EXIT calling exit
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| 100 | cleanup() {
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| 101 | echo "cleanup [$@]"
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| 102 | exit 42
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| 103 | }
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| 104 | trap 'cleanup x y z' EXIT
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| 105 | ## stdout: cleanup [x y z]
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| 106 | ## status: 42
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| 107 |
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| 108 | #### trap EXIT return status ignored
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| 109 | cleanup() {
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| 110 | echo "cleanup [$@]"
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| 111 | return 42
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| 112 | }
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| 113 | trap 'cleanup x y z' EXIT
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| 114 | ## stdout: cleanup [x y z]
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| 115 | ## status: 0
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| 116 |
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| 117 | #### trap EXIT with PARSE error
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| 118 | trap 'echo FAILED' EXIT
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| 119 | for
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| 120 | ## stdout: FAILED
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| 121 | ## status: 2
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| 122 | ## OK mksh status: 1
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| 123 |
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| 124 | #### trap EXIT with PARSE error and explicit exit
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| 125 | trap 'echo FAILED; exit 0' EXIT
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| 126 | for
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| 127 | ## stdout: FAILED
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| 128 | ## status: 0
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| 129 |
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| 130 | #### trap EXIT with explicit exit
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| 131 | trap 'echo IN TRAP; echo $stdout' EXIT
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| 132 | stdout=FOO
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| 133 | exit 42
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| 134 |
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| 135 | ## status: 42
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| 136 | ## STDOUT:
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| 137 | IN TRAP
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| 138 | FOO
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| 139 | ## END
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| 140 |
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| 141 | #### trap EXIT with command sub / subshell / pipeline
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| 142 | trap 'echo EXIT TRAP' EXIT
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| 143 |
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| 144 | echo $(echo command sub)
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| 145 |
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| 146 | ( echo subshell )
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| 147 |
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| 148 | echo pipeline | cat
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| 149 |
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| 150 | ## STDOUT:
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| 151 | command sub
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| 152 | subshell
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| 153 | pipeline
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| 154 | EXIT TRAP
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| 155 | ## END
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| 156 |
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| 157 | #### trap 0 is equivalent to EXIT
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| 158 | # not sure why this is, but POSIX wants it.
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| 159 | trap 'echo EXIT' 0
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| 160 | echo status=$?
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| 161 | trap - EXIT
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| 162 | echo status=$?
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| 163 | ## status: 0
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| 164 | ## STDOUT:
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| 165 | status=0
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| 166 | status=0
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| 167 | ## END
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| 168 |
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| 169 | #### trap 1 is equivalent to SIGHUP; HUP is equivalent to SIGHUP
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| 170 | trap 'echo HUP' SIGHUP
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| 171 | echo status=$?
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| 172 | trap 'echo HUP' HUP
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| 173 | echo status=$?
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| 174 | trap 'echo HUP' 1
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| 175 | echo status=$?
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| 176 | trap - HUP
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| 177 | echo status=$?
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| 178 | ## status: 0
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| 179 | ## STDOUT:
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| 180 | status=0
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| 181 | status=0
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| 182 | status=0
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| 183 | status=0
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| 184 | ## END
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| 185 | ## N-I dash STDOUT:
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| 186 | status=1
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| 187 | status=0
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| 188 | status=0
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| 189 | status=0
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| 190 | ## END
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| 191 |
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| 192 | #### eval in the exit trap (regression for issue #293)
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| 193 | trap 'eval "echo hi"' 0
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| 194 | ## STDOUT:
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| 195 | hi
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| 196 | ## END
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| 197 |
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| 198 |
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| 199 | #### exit codes for traps are isolated
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| 200 |
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| 201 | trap 'echo USR1 trap status=$?; ( exit 42 )' USR1
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| 202 |
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| 203 | echo before=$?
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| 204 |
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| 205 | # Equivalent to 'kill -USR1 $$' except OSH doesn't have "kill" yet.
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| 206 | # /bin/kill doesn't exist on Debian unless 'procps' is installed.
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| 207 | sh -c "kill -USR1 $$"
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| 208 | echo after=$?
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| 209 |
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| 210 | ## STDOUT:
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| 211 | before=0
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| 212 | USR1 trap status=0
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| 213 | after=0
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| 214 | ## END
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| 215 |
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| 216 | #### traps are cleared in subshell (started with &)
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| 217 |
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| 218 | # Test with SIGURG because the default handler is SIG_IGN
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| 219 | #
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| 220 | # If we use SIGUSR1, I think the shell reverts to killing the process
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| 221 |
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| 222 | # https://man7.org/linux/man-pages/man7/signal.7.html
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| 223 |
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| 224 | trap 'echo SIGURG' URG
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| 225 |
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| 226 | kill -URG $$
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| 227 |
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| 228 | # Hm trap doesn't happen here
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| 229 | { echo begin child; sleep 0.1; echo end child; } &
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| 230 | kill -URG $!
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| 231 | wait
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| 232 | echo "wait status $?"
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| 233 |
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| 234 | # In the CI, mksh sometimes gives:
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| 235 | #
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| 236 | # USR1
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| 237 | # begin child
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| 238 | # done
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| 239 | #
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| 240 | # leaving off 'end child'. This seems like a BUG to me?
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| 241 |
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| 242 | ## STDOUT:
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| 243 | SIGURG
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| 244 | begin child
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| 245 | end child
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| 246 | wait status 0
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| 247 | ## END
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| 248 |
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| 249 |
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| 250 | #### DEBUG trap remains on during USR1 trap?
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| 251 |
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| 252 | case $SH in dash|mksh|ash) exit ;; esac
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| 253 |
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| 254 | trap 'false; echo $LINENO usr1' USR1
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| 255 | trap 'false; echo $LINENO dbg' DEBUG
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| 256 |
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| 257 | sh -c "kill -USR1 $$"
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| 258 | echo after=$?
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| 259 |
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| 260 | ## STDOUT:
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| 261 | 6 dbg
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| 262 | 1 dbg
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| 263 | 1 dbg
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| 264 | 1 usr1
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| 265 | 7 dbg
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| 266 | after=0
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| 267 | ## END
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| 268 |
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| 269 | ## N-I dash/mksh/ash STDOUT:
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| 270 | ## END
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| 271 |
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| 272 | #### ERR trap and USR1 trap
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| 273 |
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| 274 | case $SH in dash|mksh|ash) exit ;; esac
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| 275 |
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| 276 | trap 'false; echo $LINENO usr1' USR1
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| 277 | trap 'false; echo $LINENO err' ERR
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| 278 |
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| 279 | sh -c "kill -USR1 $$"
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| 280 | echo after=$?
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| 281 |
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| 282 | ## STDOUT:
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| 283 | 1 err
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| 284 | 1 usr1
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| 285 | after=0
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| 286 | ## END
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| 287 |
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| 288 | ## N-I dash/mksh/ash STDOUT:
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| 289 | ## END
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| 290 |
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| 291 | #### DEBUG trap and ERR trap
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| 292 |
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| 293 | case $SH in dash|mksh|ash) exit ;; esac
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| 294 |
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| 295 | trap 'false; echo $LINENO err' ERR
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| 296 | trap 'false; echo $LINENO debug' DEBUG
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| 297 |
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| 298 | false
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| 299 | echo after=$?
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| 300 |
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| 301 | ## STDOUT:
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| 302 | 6 err
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| 303 | 6 debug
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| 304 | 6 debug
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| 305 | 6 debug
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| 306 | 6 err
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| 307 | 7 err
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| 308 | 7 debug
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| 309 | after=1
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| 310 | ## END
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| 311 |
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| 312 | ## N-I dash/mksh/ash STDOUT:
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| 313 | ## END
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