Bug #880
closed
ksh93 coredumps on 'unset'
100%
Description
The simple test case is:
#!/bin/sh
function do_bar {
typeset IFS
while getopts 'foo:bar' cmd_arg; do
;
done >&2
unset IFS
}
case "$0" in
*) do_bar "$@" ;;
esac
Works (I mean "breaks") only with /usr/bin/i86/ksh.
Originally got it trying to run 'man' shell script from FreeBSD (changing func() -> function func and local -> typeset), running it using /usr/bin/ksh or /usr/bin/amd64/ksh93 makes ksh coredump somewhere else. Even if I'm using it incorrectly, still it shouldn't make the shell dump the core. http://svn.freebsd.org/viewvc/base/head/usr.bin/man/man.sh?revision=220261&view=markup is the script in question.
Related issues
Updated by Roland Mainz about 12 years ago
The problem here is that IFS is a function-local variable. Some older ksh93 versions choke on this (and local typeset -L/-U (uppercase/lowercase variables)) depending on how the heap is laid-out. The upcoming ksh93-integration update all fixes this.
Updated by Andy Fiddaman over 2 years ago
- Related to Feature #13405: ksh93 update to 2012-08-01 added
Updated by Electric Monk over 2 years ago
- Status changed from New to Closed
- % Done changed from 0 to 100
git commit b30d193948be5a7794d7ae3ba0ed9c2f72c88e0f
commit b30d193948be5a7794d7ae3ba0ed9c2f72c88e0f
Author: Andy Fiddaman <omnios@citrus-it.co.uk>
Date: 2021-01-30T17:13:33.000Z
13405 ksh93 update to 2012-08-01
13434 sh: mishandles backslash as last character of a block of input
11750 ksh mkdir builtin doesn't honor special file permissions
9199 ksh93 builtin *grep -v mishandles blank lines, blows up libgcrypt-config
6756 sh (and ksh) have issues with ${1+"$@"}
6520 ksh: sleep could wait forever
4860 ksh93: core in printf
3791 /bin/sh's builtin 'rm' busted: 'rm -f' without arguments returns error
1047 ksh overwrites child core files
880 ksh93 coredumps on 'unset'
499 "interrupted system call" when using "tee" builtin in ksh
Reviewed by: Robert Mustacchi <rm@fingolfin.org>
Reviewed by: Hans Rosenfeld <rosenfeld@grumpf.hope-2000.org>
Reviewed by: Dominik Hassler <hadfl@omnios.org>
Approved by: Rich Lowe <richlowe@richlowe.net>