145 lines
1.7 KiB
Text
145 lines
1.7 KiB
Text
# bug in bash up to and including bash-3.0 (including patches)
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#
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# problem is conflict between CTLNUL used internally to denote quoted null
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# characters and its value (0x7f) appearing in the expansion of a variable
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#
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unset x
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recho "xxx${x}yyy"
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y=$'\177'
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recho "xxx${y}yyy"
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unset y
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unset undef
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set ""
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recho ${undef-"x$*y"}
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set $'\177'
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recho ${undef-"x$*y"}
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shift $#
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f()
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{
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recho "-${*-x}-"
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}
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f ''
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f $'\177'
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unset -f f
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x=12345
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recho "${x:6:1}"
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x=
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recho "${x:0:1}"
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y=$'\177'
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recho "${y:0:1}"
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y=xxx$'\177'yyy
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recho "${y:3:3}"
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unset x y
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eval tmp=`printf "$'\\\\\x%x'\n" 127`
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printf "%#1x\n" "'$tmp"
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x=$'\177'
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printf "%#1x\n" "'$x"
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a=127
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eval c=\$\'\\$(printf '%o' $a)\'
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printf "%#1x\n" "'$c"
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recho "$c"
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recho "$c"@
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recho @"$c"@
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recho @"$c"
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recho "$c"
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recho "$c@"
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recho "@$c@"
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recho "@$c"
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unset tmp x a c
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qtest()
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{
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recho ${#q} "${q}" ${q}
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}
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q=$'\x7f'
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qtest
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q=${q}a
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qtest
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q=$'\x7fa'
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qtest
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q="${q}a"
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qtest
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unset -f qtest
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unset q
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set -- ''
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recho "${*:1}"
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recho ${*:1}
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recho -${*:1}-
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recho -"${*:1}"-
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set $'\177'
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recho "${*:1}"
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recho "-${*:1}-"
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recho ${*:1}
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recho -${*:1}-
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shift $#
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DEL=`awk 'END{printf("%c", 0+127)}' </dev/null`
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T1=a\ $DEL
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T2="a $DEL"
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set -- x $(echo $T1|wc -c) $(echo $T2|wc -c); shift
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L1=$1; L2=$2
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case "$L1/$L2" in
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4/4) echo ok;;
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*) echo CTLNUL bug: L1=$L1, L2=$L2;;
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esac
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x=$'\177'
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recho "aaa${x}bbb"
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recho ccc"${x}"ddd
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recho eee"$x"fff
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recho ggg"$(echo $x)"hhh
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x=
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recho "aaa${x}bbb"
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recho ccc"${x}"ddd
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recho eee"$x"fff
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recho ggg"$(echo $x)"hhh
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set -- $'\177'
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recho "aaa${1}bbb"
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recho ccc"${1}"ddd
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recho eee"$1"fff
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recho ggg"$(echo $1)"hhh
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set -- ""
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recho "aaa${1}bbb"
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recho ccc"${1}"ddd
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recho eee"$1"fff
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recho ggg"$(echo $1)"hhh
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recho aaa$'\177'bbb
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recho ccc""ddd
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recho "eeefff"
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recho ggg"$(echo $'\177')"hhh
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${THIS_SH} ./iquote1.sub
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