projects / thirdparty / bash.git / blame
| Commit | Line | Data |
|---|---|---|
| 8868edaf CR |
1 | # This program is free software: you can redistribute it and/or modify |
| 2 | # it under the terms of the GNU General Public License as published by | |
| 3 | # the Free Software Foundation, either version 3 of the License, or | |
| 4 | # (at your option) any later version. | |
| 5 | # | |
| 6 | # This program is distributed in the hope that it will be useful, | |
| 7 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 8 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 9 | # GNU General Public License for more details. | |
| 10 | # | |
| 11 | # You should have received a copy of the GNU General Public License | |
| 12 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 13 | # | |
| a0c0a00f CR |
14 | # test behavior of readonly namerefs and namerefs referencing readonly variables |
| 15 | ||
| 16 | # readonly nameref variable referencing read-write global variable | |
| 17 | ||
| 18 | bar=one | |
| 19 | declare -rn foo0=bar | |
| 20 | unset foo0 # unsets bar | |
| 21 | declare -p bar | |
| 22 | unset -n foo0 # cannot unset | |
| 23 | declare -p foo0 | |
| 24 | ||
| 25 | declare +r foo0 # modifies bar | |
| 26 | declare -p foo0 bar | |
| 27 | declare +r -n foo0 # error | |
| 28 | declare +n foo0 # error | |
| 29 | unset bar | |
| 30 | ||
| 31 | # readonly nameref variable without a value | |
| 32 | typeset -n foo1 | |
| 33 | typeset -r foo1 | |
| 34 | ||
| 35 | typeset -p foo1 | |
| 36 | ||
| 37 | typeset foo1=bar # error | |
| 38 | typeset +r foo1 # no-op, follows nameref chain to nothing | |
| 39 | typeset -p foo1 | |
| 40 | ||
| 41 | # nameref pointing to read-only global variable | |
| 42 | foo2=bar | |
| 43 | typeset -n foo2 | |
| 44 | typeset -r foo2 # changes bar | |
| 45 | ||
| 46 | typeset -p foo2 bar | |
| 47 | ||
| 48 | foo2=bar # error? | |
| 49 | typeset +r foo2 # attempts to change bar, error | |
| 50 | typeset -p foo2 bar # nameref unchanged | |
| 51 | ||
| 52 | # read-only nameref pointing to read-only global variable | |
| 53 | bar3=three | |
| 54 | declare -rn foo3=bar3 | |
| 55 | unset foo3 # unsets bar3 | |
| 56 | ||
| 57 | bar3=three | |
| 58 | declare -p bar3 | |
| 59 | unset -n foo3 # cannot unset | |
| 60 | ||
| 61 | readonly bar3 | |
| 62 | declare +r foo3 # error attempting to reference bar3 | |
| 63 | declare -p foo3 bar3 | |
| 64 | declare +r -n foo3 # error | |
| 65 | ||
| 66 | # readonly nameref pointing to read-write local -- can we remove nameref attr? | |
| 67 | func() | |
| 68 | { | |
| 69 | typeset bar4=four | |
| 70 | ||
| 71 | # readonly nameref | |
| 72 | typeset -n -r foo4=bar4 | |
| 73 | ||
| 74 | typeset -p foo4 bar4 | |
| 75 | ||
| 76 | typeset +n foo4 | |
| 77 | ||
| 78 | typeset -p foo4 | |
| 79 | } | |
| 80 | func | |
| 81 | unset -f func | |
| 82 | ||
| 83 | # readonly nameref pointing to read-write global -- can we remove nameref attr? | |
| 84 | bar4=four | |
| 85 | foo4=bar4 | |
| 86 | # readonly nameref | |
| 87 | typeset -n foo4 | |
| 88 | typeset -r -n foo4 | |
| 89 | ||
| 90 | typeset -p foo4 bar4 | |
| 91 | ||
| 92 | typeset +n foo4 | |
| 93 | typeset -p foo4 | |
| 94 | ||
| 95 | bar4=four | |
| 96 | : ${foo4=bar4} | |
| 97 | ||
| 98 | typeset -p foo4 bar4 | |
| 99 | ||
| 100 | # readonly local nameref without a value -- can we remove nameref attribute? | |
| 101 | func() | |
| 102 | { | |
| 103 | declare -r -n foo5 | |
| 104 | declare -p foo5 | |
| 105 | declare +n foo5 | |
| 106 | declare -p foo5 | |
| 107 | } | |
| 108 | func | |
| 109 | unset -f func | |
| 110 | ||
| 111 | # readonly global nameref without a value -- can we remove nameref attribute? | |
| 112 | declare -n foo5 | |
| 113 | declare -r -n foo5 | |
| 114 | declare -p foo5 | |
| 115 | declare +n foo5 | |
| 116 | declare -p foo5 |