| 1 | #
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| 2 | # Some shell errors are unrecoverable! Like divide by zero (except in bash.
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| 3 | #
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| 4 | # Any others?
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| 5 |
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| 6 |
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| 7 | #### Unrecoverable: divide by zero in redirect word
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| 8 |
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| 9 | $SH -c '
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| 10 | echo hi > file$(( 42 / 0 )) in
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| 11 | echo inside=$?
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| 12 | '
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| 13 | echo outside=$?
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| 14 |
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| 15 | ## STDOUT:
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| 16 | outside=1
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| 17 | ## END
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| 18 |
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| 19 | ## OK dash/ash STDOUT:
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| 20 | outside=2
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| 21 | ## END
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| 22 |
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| 23 | # bash makes the command fail
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| 24 | ## OK bash STDOUT:
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| 25 | inside=1
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| 26 | outside=0
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| 27 | ## END:
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| 28 |
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| 29 |
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| 30 | #### Unrecoverable: divide by zero in conditional word
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| 31 |
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| 32 | $SH -c '
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| 33 | if test foo$(( 42 / 0 )) = foo; then
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| 34 | echo true
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| 35 | else
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| 36 | echo false
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| 37 | fi
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| 38 | echo inside=$?
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| 39 | '
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| 40 | echo outside=$?
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| 41 |
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| 42 | echo ---
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| 43 |
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| 44 | $SH -c '
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| 45 | if test foo$(( 42 / 0 )) = foo; then
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| 46 | echo true
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| 47 | fi
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| 48 | echo inside=$?
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| 49 | '
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| 50 | echo outside=$?
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| 51 |
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| 52 | ## STDOUT:
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| 53 | outside=1
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| 54 | ---
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| 55 | outside=1
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| 56 | ## END
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| 57 |
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| 58 | ## OK dash/ash STDOUT:
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| 59 | outside=2
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| 60 | ---
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| 61 | outside=2
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| 62 | ## END
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| 63 |
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| 64 | # bash makes the command fail
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| 65 | ## OK bash STDOUT:
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| 66 | inside=1
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| 67 | outside=0
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| 68 | ---
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| 69 | inside=1
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| 70 | outside=0
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| 71 | ## END:
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| 72 |
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| 73 | # weird difference in zsh!
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| 74 |
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| 75 | ## BUG zsh STDOUT:
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| 76 | outside=1
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| 77 | ---
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| 78 | outside=0
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| 79 | ## END
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| 80 |
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| 81 |
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| 82 | #### Unrecoverable: divide by zero in case
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| 83 |
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| 84 | $SH -c '
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| 85 | case $(( 42 / 0 )) in
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| 86 | (*) echo hi ;;
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| 87 | esac
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| 88 | echo inside=$?
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| 89 | '
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| 90 | echo outside=$?
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| 91 |
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| 92 | echo ---
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| 93 |
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| 94 | $SH -c '
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| 95 | case foo in
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| 96 | ( $(( 42 / 0 )) )
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| 97 | echo hi
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| 98 | ;;
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| 99 | esac
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| 100 | echo inside=$?
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| 101 | '
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| 102 | echo outside=$?
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| 103 |
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| 104 | ## STDOUT:
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| 105 | outside=1
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| 106 | ---
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| 107 | outside=1
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| 108 | ## END
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| 109 |
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| 110 | ## OK dash/ash STDOUT:
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| 111 | outside=2
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| 112 | ---
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| 113 | outside=2
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| 114 | ## END
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| 115 |
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| 116 | ## OK bash STDOUT:
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| 117 | inside=1
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| 118 | outside=0
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| 119 | ---
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| 120 | inside=1
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| 121 | outside=0
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| 122 | ## END:
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| 123 |
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| 124 | ## BUG zsh STDOUT:
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| 125 | outside=0
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| 126 | ---
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| 127 | outside=0
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| 128 | ## END
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| 129 |
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| 130 |
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| 131 | #### Unrecoverable: ${undef?message}
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| 132 |
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| 133 | $SH -c '
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| 134 | echo ${undef?message}
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| 135 | echo inside=$?
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| 136 | '
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| 137 | echo outside=$?
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| 138 |
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| 139 | $SH -c '
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| 140 | case ${undef?message} in
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| 141 | (*) echo hi ;;
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| 142 | esac
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| 143 | echo inside=$?
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| 144 | '
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| 145 | echo outside=$?
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| 146 |
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| 147 | ## STDOUT:
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| 148 | outside=1
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| 149 | outside=1
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| 150 | ## END
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| 151 | ## OK dash STDOUT:
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| 152 | outside=2
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| 153 | outside=2
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| 154 | ## END
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| 155 | ## OK bash STDOUT:
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| 156 | outside=127
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| 157 | outside=127
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| 158 | ## END
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| 159 |
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| 160 | #### ${undef} with nounset
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| 161 |
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| 162 | $SH -c '
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| 163 | set -o nounset
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| 164 | case ${undef} in
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| 165 | (*) echo hi ;;
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| 166 | esac
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| 167 | echo inside=$?
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| 168 | '
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| 169 | echo outside=$?
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| 170 |
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| 171 | ## STDOUT:
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| 172 | outside=1
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| 173 | ## END
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| 174 |
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| 175 | ## OK dash STDOUT:
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| 176 | outside=2
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| 177 | ## END
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| 178 |
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| 179 | ## OK bash STDOUT:
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| 180 | outside=127
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| 181 | ## END
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| 182 |
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| 183 | ## BUG zsh STDOUT:
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| 184 | outside=0
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| 185 | ## END
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| 186 |
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