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fa52ac9781
Without this patch, BusyBox handles bash pattern substitutions without
a terminating '/' character incorrectly.
Consider the following shell script:
_bootstrapver=5.0.211-r0
_referencesdir="/usr/${_bootstrapver/-*}/Sources"
echo $_referencesdir
This should output `/usr/5.0.211/Sources`. However, without this patch
it instead outputs `/usr/5.0.211Sources`. This is due to the fact that
BusyBox expects the bash pattern substitutions to always be terminated
with a '/' (at least in this part of subvareval) and thus reads passed
the substitution itself and consumes the '/' character which is part of
the literal string. If there is no '/' after the substitution then
BusyBox might perform an out-of-bounds read under certain circumstances.
When replacing the bash pattern substitution with `${_bootstrapver/-*/}`,
or with this patch applied, ash outputs the correct value.
Signed-off-by: Sören Tempel <soeren@soeren-tempel.net>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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| .. | ||
| ash-alias | ||
| ash-arith | ||
| ash-comm | ||
| ash-getopts | ||
| ash-glob | ||
| ash-heredoc | ||
| ash-invert | ||
| ash-misc | ||
| ash-parsing | ||
| ash-psubst | ||
| ash-quoting | ||
| ash-read | ||
| ash-redir | ||
| ash-signals | ||
| ash-standalone | ||
| ash-vars | ||
| ash-z_slow | ||
| .gitignore | ||
| printenv.c | ||
| recho.c | ||
| run-all | ||
| zecho.c | ||