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24 lines
633 B
Plaintext
Executable File
24 lines
633 B
Plaintext
Executable File
# cat is an external program, variable should not leak out of it.
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# this currently fails with CONFIG_FEATURE_SH_NOFORK=y
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VAR=''
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VAR=val0 cat /dev/null
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echo "should be empty: '$VAR'"
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# true is a regular builtin, variable should not leak out of it.
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VAR=''
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VAR=val1 true
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echo "should be empty: '$VAR'"
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# ash follows the "special builtin leaks variables" rule here:
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# exec is a special builtin. (bash does not do it)
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VAR=''
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VAR=val2 exec 2>&1
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echo "should be not empty: '$VAR'"
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# ash follows the "function call is a special builtin" rule here
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# (bash does not do it)
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f() { true; }
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VAR=''
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VAR=val3 f
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echo "should be not empty: '$VAR'"
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