Hi,
When I increment an uninitialized element of an indexed or associative array
from within an arithmetic context, there is no effect in the latest alpha. It
worked in ksh93u. It applies only to arithmetic assignments, but incrementing
via simple assignment works fine.
Can anyone reproduce this regression?
$ ksh -c 'print -v .sh.version'
Version AIJM 93v- 2014-05-09
# Increment from math context broken.
$ ksh -c 'integer i; integer -a arr; ((i++, arr[3]++)); typeset -p arr
i'
typeset -a -l -i arr=()
typeset -l -i i=1
# Simple assignments are fine.
$ ksh -c 'integer i; integer -a arr; i+=1 arr[3]+=1; typeset -p arr i'
typeset -a -l -i arr=([3]=1)
typeset -l -i i=1
# Compound assignments also fine.
$ ksh -c 'integer -a arr; arr+=([3]+=1); typeset -p arr'
typeset -a -l -i arr=([3]=1)
# First example in mksh/zsh.
$ mksh -c 'integer i; integer -a arr; ((i++, arr[3]++)); typeset -p
arr i'
set -A arr
typeset -i arr[3]=1
typeset -i i=1
$ zsh -c 'integer i; integer -a arr; ((i++, arr[3]++)); typeset -p arr
i'
zsh:1: bad option: -a
typeset -a arr
arr=('' '' 1)
typeset -i i=1
--
Dan Douglas
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