| 1 | ## compare_shells: dash bash mksh ash
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| 2 | ## oils_failures_allowed: 2
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| 3 |
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| 4 | #### traps are not active inside subshells $() () trap | cat
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| 5 |
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| 6 | # TODO: should we change this? We're not compatible with bash or busybox ash
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| 7 |
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| 8 | trap 'echo bye' EXIT
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| 9 |
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| 10 | # NOT a subshell
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| 11 | trap > traps.txt
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| 12 | wc -l traps.txt
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| 13 |
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| 14 | echo '( )'
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| 15 | ( trap )
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| 16 |
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| 17 | echo '$(trap)'
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| 18 | echo $(trap)
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| 19 |
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| 20 | echo 'trap | cat'
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| 21 | trap | cat
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| 22 |
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| 23 | ## STDOUT:
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| 24 | 1 traps.txt
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| 25 | ( )
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| 26 | $(trap)
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| 27 |
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| 28 | trap | cat
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| 29 | bye
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| 30 | ## END
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| 31 | ## BUG bash STDOUT:
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| 32 | 1 traps.txt
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| 33 | ( )
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| 34 | trap -- 'echo bye' EXIT
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| 35 | $(trap)
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| 36 | trap -- 'echo bye' EXIT
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| 37 | trap | cat
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| 38 | trap -- 'echo bye' EXIT
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| 39 | bye
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| 40 | ## END
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| 41 | ## BUG-2 ash STDOUT:
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| 42 | 1 traps.txt
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| 43 | ( )
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| 44 | $(trap)
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| 45 | trap -- 'echo bye' EXIT
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| 46 | trap | cat
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| 47 | bye
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| 48 | ## END
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| 49 |
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| 50 |
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| 51 | #### trap accepts/ignores --
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| 52 | trap -- 'echo hi' EXIT
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| 53 | echo ok
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| 54 | ## STDOUT:
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| 55 | ok
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| 56 | hi
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| 57 | ## END
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| 58 |
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| 59 | #### Register invalid trap, remove invalid trap
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| 60 | trap 'foo' SIGINVALID
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| 61 | if test $? -ne 0; then
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| 62 | echo ok
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| 63 | fi
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| 64 |
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| 65 | trap - SIGINVALID
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| 66 | if test $? -ne 0; then
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| 67 | echo ok
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| 68 | fi
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| 69 |
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| 70 | ## STDOUT:
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| 71 | ok
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| 72 | ok
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| 73 | ## END
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| 74 |
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| 75 | #### trap foo gives non-zero error
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| 76 | trap 'foo'
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| 77 | if test $? -ne 0; then
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| 78 | echo ok
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| 79 | fi
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| 80 | ## STDOUT:
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| 81 | ok
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| 82 | ## END
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| 83 | ## BUG mksh STDOUT:
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| 84 | ## END
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| 85 |
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| 86 | #### SIGINT and INT are aliases
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| 87 | trap - SIGINT
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| 88 | echo $?
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| 89 | trap - INT
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| 90 | echo $?
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| 91 | ## STDOUT:
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| 92 | 0
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| 93 | 0
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| 94 | ## END
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| 95 | ## N-I dash STDOUT:
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| 96 | 1
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| 97 | 0
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| 98 | ## END
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| 99 |
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| 100 | #### trap without args prints traps
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| 101 | trap 'echo exit' EXIT
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| 102 | echo status=$?
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| 103 |
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| 104 | trap
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| 105 | echo status=$?
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| 106 |
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| 107 | ## STDOUT:
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| 108 | status=0
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| 109 | trap -- 'echo exit' EXIT
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| 110 | status=0
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| 111 | exit
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| 112 | ## END
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| 113 |
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| 114 | #### print trap handler with multiple lines
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| 115 | trap 'echo 1
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| 116 | echo 2
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| 117 | echo 3' INT
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| 118 |
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| 119 | trap
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| 120 | ## STDOUT:
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| 121 | trap -- 'echo 1
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| 122 | echo 2
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| 123 | echo 3' SIGINT
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| 124 | ## END
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| 125 | ## OK dash/ash STDOUT:
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| 126 | trap -- 'echo 1
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| 127 | echo 2
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| 128 | echo 3' INT
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| 129 | ## END
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| 130 | ## OK mksh STDOUT:
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| 131 | trap -- $'echo 1\necho 2\necho 3' INT
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| 132 | ## END
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| 133 |
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| 134 | #### trap -p is like trap: it prints the handlers and full signal names
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| 135 | case $SH in dash) exit ;; esac
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| 136 | trap "echo INT" INT
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| 137 | trap "echo EXIT" EXIT
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| 138 | trap -p
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| 139 | ## STDOUT:
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| 140 | trap -- 'echo EXIT' EXIT
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| 141 | trap -- 'echo INT' SIGINT
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| 142 | EXIT
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| 143 | ## END
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| 144 | ## N-I mksh status: 1
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| 145 | ## N-I ash status: 2
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| 146 | ## N-I mksh/ash STDOUT:
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| 147 | EXIT
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| 148 | ## END
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| 149 | ## N-I dash STDOUT:
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| 150 | ## END
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| 151 |
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| 152 | #### Register the same handler for multiple signals
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| 153 | trap 'echo test' TERM 2 EXIT
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| 154 | trap
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| 155 | ## STDOUT:
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| 156 | trap -- 'echo test' EXIT
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| 157 | trap -- 'echo test' SIGINT
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| 158 | trap -- 'echo test' SIGTERM
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| 159 | test
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| 160 | ## END
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| 161 | ## OK dash/mksh/ash STDOUT:
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| 162 | trap -- 'echo test' EXIT
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| 163 | trap -- 'echo test' INT
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| 164 | trap -- 'echo test' TERM
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| 165 | test
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| 166 | ## END
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| 167 |
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| 168 | #### Remove multiple handlers with trap -
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| 169 | trap "echo int" INT
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| 170 | trap "echo e" EXIT
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| 171 | trap - int 0 3
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| 172 | trap
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| 173 |
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| 174 | echo ---
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| 175 | trap "echo int" INT
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| 176 | trap "echo e" EXIT
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| 177 | trap - int 0 -99
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| 178 | if test $? -ne 0; then
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| 179 | echo ok
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| 180 | fi
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| 181 | ## STDOUT:
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| 182 | ---
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| 183 | ok
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| 184 | ## END
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| 185 |
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| 186 | #### trap EXIT clears the EXIT trap
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| 187 | trap "echo INT" INT
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| 188 | trap "echo EXIT" EXIT
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| 189 | trap
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| 190 | echo ---
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| 191 | trap EXIT
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| 192 | trap
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| 193 | echo ---
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| 194 | trap INT
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| 195 | trap
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| 196 | ## STDOUT:
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| 197 | trap -- 'echo EXIT' EXIT
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| 198 | trap -- 'echo INT' SIGINT
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| 199 | ---
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| 200 | trap -- 'echo INT' SIGINT
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| 201 | ---
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| 202 | ## END
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| 203 | ## OK dash/ash STDOUT:
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| 204 | trap -- 'echo EXIT' EXIT
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| 205 | trap -- 'echo INT' INT
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| 206 | ---
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| 207 | trap -- 'echo INT' INT
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| 208 | ---
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| 209 | ## END
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| 210 | ## BUG mksh STDOUT:
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| 211 | trap -- 'echo EXIT' EXIT
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| 212 | trap -- 'echo INT' INT
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| 213 | ---
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| 214 | trap -- 'echo EXIT' EXIT
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| 215 | trap -- 'echo INT' INT
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| 216 | ---
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| 217 | trap -- 'echo EXIT' EXIT
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| 218 | trap -- 'echo INT' INT
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| 219 | EXIT
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| 220 | ## END
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| 221 |
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| 222 | #### trap 0 is equivalent to trap EXIT
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| 223 | trap "echo INT" INT
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| 224 | trap "echo EXIT" 0 # EXIT
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| 225 | trap
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| 226 | echo ---
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| 227 | trap 0
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| 228 | trap
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| 229 | ## STDOUT:
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| 230 | trap -- 'echo EXIT' EXIT
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| 231 | trap -- 'echo INT' SIGINT
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| 232 | ---
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| 233 | trap -- 'echo INT' SIGINT
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| 234 | ## END
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| 235 | ## OK dash/ash/mksh STDOUT:
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| 236 | trap -- 'echo EXIT' EXIT
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| 237 | trap -- 'echo INT' INT
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| 238 | ---
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| 239 | trap -- 'echo INT' INT
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| 240 | ## END
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| 241 |
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| 242 | #### trap 1 is equivalent to SIGHUP; HUP is equivalent to SIGHUP
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| 243 | trap 'echo HUP' SIGHUP
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| 244 | echo status=$?
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| 245 | trap 'echo HUP' HUP
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| 246 | echo status=$?
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| 247 | trap 'echo HUP' 1
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| 248 | echo status=$?
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| 249 | trap - HUP
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| 250 | echo status=$?
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| 251 | ## status: 0
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| 252 | ## STDOUT:
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| 253 | status=0
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| 254 | status=0
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| 255 | status=0
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| 256 | status=0
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| 257 | ## END
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| 258 | ## N-I dash STDOUT:
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| 259 | status=1
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| 260 | status=0
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| 261 | status=0
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| 262 | status=0
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| 263 | ## END
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| 264 |
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| 265 | #### trap 0 2 resets EXIT AND SIGINT
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| 266 |
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| 267 | trap "echo EXIT" EXIT
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| 268 | echo ---
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| 269 | trap
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| 270 | echo ---
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| 271 | trap 0 2
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| 272 | trap
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| 273 | echo ---
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| 274 | trap "echo INT" INT
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| 275 | trap "echo EXIT" EXIT
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| 276 | trap 2 EXIT
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| 277 | trap
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| 278 |
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| 279 | ## STDOUT:
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| 280 | ---
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| 281 | trap -- 'echo EXIT' EXIT
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| 282 | ---
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| 283 | ---
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| 284 | ## END
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| 285 |
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| 286 | #### trap '' EXIT - printing state
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| 287 |
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| 288 | trap 'echo exit' EXIT
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| 289 | trap
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| 290 | echo
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| 291 |
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| 292 | trap '' EXIT
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| 293 | trap
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| 294 | echo
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| 295 |
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| 296 | trap '# comment' EXIT
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| 297 | trap
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| 298 |
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| 299 | ## STDOUT:
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| 300 | trap -- 'echo exit' EXIT
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| 301 |
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| 302 | trap -- '' EXIT
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| 303 |
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| 304 | trap -- '# comment' EXIT
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| 305 | ## END
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| 306 | ## BUG mksh STDOUT:
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| 307 | trap -- 'echo exit' EXIT
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| 308 |
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| 309 | trap -- EXIT
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| 310 |
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| 311 | trap -- '# comment' EXIT
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| 312 | ## END
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| 313 |
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| 314 | #### trap 'echo hi' KILL (regression test, caught by smoosh suite)
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| 315 | trap 'echo hi' 9
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| 316 | echo status=$?
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| 317 |
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| 318 | trap 'echo hi' KILL
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| 319 | echo status=$?
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| 320 |
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| 321 | trap 'echo hi' STOP
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| 322 | echo status=$?
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| 323 |
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| 324 | trap 'echo hi' TERM
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| 325 | echo status=$?
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| 326 |
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| 327 | ## STDOUT:
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| 328 | status=0
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| 329 | status=0
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| 330 | status=0
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| 331 | status=0
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| 332 | ## END
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| 333 | ## OK osh STDOUT:
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| 334 | status=2
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| 335 | status=2
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| 336 | status=2
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| 337 | status=0
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| 338 | ## END
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| 339 |
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| 340 | #### exit 1 when trap code string is invalid
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| 341 | # All shells spew warnings to stderr, but don't actually exit! Bad!
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| 342 | trap 'echo <' EXIT
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| 343 | echo status=$?
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| 344 | ## STDOUT:
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| 345 | status=1
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| 346 | ## END
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| 347 |
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| 348 | ## BUG mksh status: 1
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| 349 | ## BUG mksh STDOUT:
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| 350 | status=0
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| 351 | ## END
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| 352 |
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| 353 | ## BUG ash status: 2
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| 354 | ## BUG ash STDOUT:
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| 355 | status=0
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| 356 | ## END
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| 357 |
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| 358 | ## BUG dash/bash status: 0
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| 359 | ## BUG dash/bash STDOUT:
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| 360 | status=0
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| 361 | ## END
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| 362 |
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| 363 |
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| 364 | #### trap EXIT calling exit
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| 365 | cleanup() {
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| 366 | echo "cleanup [$@]"
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| 367 | exit 42
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| 368 | }
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| 369 | trap 'cleanup x y z' EXIT
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| 370 | ## stdout: cleanup [x y z]
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| 371 | ## status: 42
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| 372 |
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| 373 | #### trap EXIT return status ignored
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| 374 | cleanup() {
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| 375 | echo "cleanup [$@]"
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| 376 | return 42
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| 377 | }
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| 378 | trap 'cleanup x y z' EXIT
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| 379 | ## stdout: cleanup [x y z]
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| 380 | ## status: 0
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| 381 |
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| 382 | #### trap EXIT with PARSE error
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| 383 | trap 'echo FAILED' EXIT
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| 384 | for
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| 385 | ## stdout: FAILED
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| 386 | ## status: 2
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| 387 | ## OK mksh status: 1
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| 388 |
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| 389 | #### trap EXIT with PARSE error and explicit exit
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| 390 | trap 'echo FAILED; exit 0' EXIT
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| 391 | for
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| 392 | ## stdout: FAILED
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| 393 | ## status: 0
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| 394 |
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| 395 | #### trap EXIT with explicit exit
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| 396 | trap 'echo IN TRAP; echo $stdout' EXIT
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| 397 | stdout=FOO
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| 398 | exit 42
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| 399 |
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| 400 | ## status: 42
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| 401 | ## STDOUT:
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| 402 | IN TRAP
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| 403 | FOO
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| 404 | ## END
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| 405 |
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| 406 | #### trap EXIT with command sub / subshell / pipeline
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| 407 | trap 'echo EXIT TRAP' EXIT
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| 408 |
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| 409 | echo $(echo command sub)
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| 410 |
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| 411 | ( echo subshell )
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| 412 |
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| 413 | echo pipeline | cat
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| 414 |
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| 415 | ## STDOUT:
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| 416 | command sub
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| 417 | subshell
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| 418 | pipeline
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| 419 | EXIT TRAP
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| 420 | ## END
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| 421 |
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| 422 | #### eval in the exit trap (regression for issue #293)
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| 423 | trap 'eval "echo hi"' 0
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| 424 | ## STDOUT:
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| 425 | hi
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| 426 | ## END
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| 427 |
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| 428 |
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| 429 | #### exit codes for traps are isolated
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| 430 |
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| 431 | trap 'echo USR1 trap status=$?; ( exit 42 )' USR1
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| 432 |
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| 433 | echo before=$?
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| 434 |
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| 435 | # Equivalent to 'kill -USR1 $$' except OSH doesn't have "kill" yet.
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| 436 | # /bin/kill doesn't exist on Debian unless 'procps' is installed.
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| 437 | sh -c "kill -USR1 $$"
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| 438 | echo after=$?
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| 439 |
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| 440 | ## STDOUT:
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| 441 | before=0
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| 442 | USR1 trap status=0
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| 443 | after=0
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| 444 | ## END
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| 445 |
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| 446 | #### traps are cleared in subshell (started with &)
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| 447 |
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| 448 | # Test with SIGURG because the default handler is SIG_IGN
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| 449 | #
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| 450 | # If we use SIGUSR1, I think the shell reverts to killing the process
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| 451 |
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| 452 | # https://man7.org/linux/man-pages/man7/signal.7.html
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| 453 |
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| 454 | trap 'echo SIGURG' URG
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| 455 |
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| 456 | kill -URG $$
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| 457 |
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| 458 | # Hm trap doesn't happen here
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| 459 | { echo begin child; sleep 0.1; echo end child; } &
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| 460 | kill -URG $!
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| 461 | wait
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| 462 | echo "wait status $?"
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| 463 |
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| 464 | # In the CI, mksh sometimes gives:
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| 465 | #
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| 466 | # USR1
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| 467 | # begin child
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| 468 | # done
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| 469 | #
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| 470 | # leaving off 'end child'. This seems like a BUG to me?
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| 471 |
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| 472 | ## STDOUT:
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| 473 | SIGURG
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| 474 | begin child
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| 475 | end child
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| 476 | wait status 0
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| 477 | ## END
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| 478 |
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| 479 | #### trap USR1, sleep, SIGINT: non-interactively
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| 480 |
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| 481 | $REPO_ROOT/spec/testdata/builtin-trap-usr1.sh
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| 482 |
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| 483 | ## STDOUT:
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| 484 | usr1
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| 485 | status=0
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| 486 | ## END
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| 487 |
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| 488 | #### trap INT, sleep, SIGINT: non-interactively
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| 489 |
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| 490 | # mksh behaves differently in CI -- maybe when it's not connected to a
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| 491 | # terminal?
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| 492 | case $SH in mksh) echo mksh; exit ;; esac
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| 493 |
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| 494 | $REPO_ROOT/spec/testdata/builtin-trap-int.sh
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| 495 |
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| 496 | ## STDOUT:
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| 497 | status=0
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| 498 | ## END
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| 499 |
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| 500 | ## OK mksh STDOUT:
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| 501 | mksh
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| 502 | ## END
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| 503 |
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| 504 | # Not sure why other shells differ here, but running the trap is consistent
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| 505 | # with interactive cases in test/bugs.sh
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| 506 |
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| 507 | ## OK osh STDOUT:
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| 508 | int
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| 509 | status=0
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| 510 | ## END
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| 511 |
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| 512 | #### trap EXIT, sleep, SIGINT: non-interactively
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| 513 |
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| 514 | $REPO_ROOT/spec/testdata/builtin-trap-exit.sh
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| 515 |
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| 516 | ## STDOUT:
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| 517 | on exit
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| 518 | status=0
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| 519 | ## END
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| 520 |
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| 521 | #### Remove trap with an unsigned integer
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| 522 |
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| 523 | $SH -e -c '
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| 524 | trap "echo noprint" EXIT
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| 525 | trap 0 EXIT
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| 526 | echo ok0
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| 527 | '
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| 528 | echo
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| 529 |
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| 530 | $SH -e -c '
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| 531 | trap "echo noprint" EXIT
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| 532 | trap " 42 " EXIT
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| 533 | echo ok42space
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| 534 | '
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| 535 | echo
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| 536 |
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| 537 | # corner case: sometimes 07 is treated as octal, but not here
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| 538 | $SH -e -c '
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| 539 | trap "echo noprint" EXIT
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| 540 | trap 07 EXIT
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| 541 | echo ok07
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| 542 | '
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| 543 | echo
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| 544 |
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| 545 | $SH -e -c '
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| 546 | trap "echo trap-exit" EXIT
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| 547 | trap -1 EXIT
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| 548 | echo bad
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| 549 | '
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| 550 | if test $? -ne 0; then
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| 551 | echo failure
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| 552 | fi
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| 553 |
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| 554 | ## STDOUT:
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| 555 | ok0
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| 556 |
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| 557 | ok42space
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| 558 |
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| 559 | ok07
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| 560 |
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| 561 | trap-exit
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| 562 | failure
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| 563 | ## END
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| 564 |
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| 565 | #### trap '' sets handler to empty string (SIG_IGN)
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| 566 |
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| 567 | trap '' USR1
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| 568 | trap
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| 569 |
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| 570 | ## STDOUT:
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| 571 | trap -- '' SIGUSR1
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| 572 | ## END
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| 573 |
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| 574 | #### trap '' with multiple signals
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| 575 |
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| 576 | trap '' USR1 USR2
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| 577 | trap
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| 578 |
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| 579 | ## STDOUT:
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| 580 | trap -- '' SIGUSR1
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| 581 | trap -- '' SIGUSR2
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| 582 | ## END
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| 583 |
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| 584 | #### trap '' rejects hooks
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| 585 |
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| 586 | trap '' EXIT
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| 587 | echo should not get here
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| 588 |
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| 589 | ## STDOUT:
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| 590 | ## END
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| 591 | ## status: 2
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| 592 |
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| 593 | #### trap '' rejects STOP signal
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| 594 |
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| 595 | trap '' STOP
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| 596 | echo should not get here
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| 597 |
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| 598 | ## STDOUT:
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| 599 | ## END
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| 600 | ## status: 2
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| 601 |
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| 602 | #### trap '' rejects KILL signal
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| 603 |
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| 604 | trap '' KILL
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| 605 | echo should not get here
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| 606 |
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| 607 | ## STDOUT:
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| 608 | ## END
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| 609 | ## status: 2
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