source:
MondoRescue/branches/3.0-mindi-2.1/mindi-busybox/shell/ash_test/ash-vars/var_leak.tests@
3759
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1 | # cat is an external program, variable should not leak out of it. |
2 | # this currently fails with CONFIG_FEATURE_SH_NOFORK=y |
3 | VAR='' |
4 | VAR=val0 cat /dev/null |
5 | echo "should be empty: '$VAR'" |
6 | |
7 | # true is a regular builtin, variable should not leak out of it. |
8 | VAR='' |
9 | VAR=val1 true |
10 | echo "should be empty: '$VAR'" |
11 | |
12 | # ash follows the "special builtin leaks variables" rule here: |
13 | # exec is a special builtin. (bash does not do it) |
14 | VAR='' |
15 | VAR=val2 exec 2>&1 |
16 | echo "should be not empty: '$VAR'" |
17 | |
18 | # ash follows the "function call is a special builtin" rule here |
19 | # (bash does not do it) |
20 | f() { true; } |
21 | VAR='' |
22 | VAR=val3 f |
23 | echo "should be not empty: '$VAR'" |
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