# problems with fix for posix interp 217 introduced in bash-4.2 declare -ax array array[$(( $( echo -n 1001 ) - 1001 ))]=1 echo ${array[0]} echo ${array[@]} unset 'array[0]' array[$( echo -n 1001 ) - 1001 ]=1 echo ${array[0]} unset 'array[0]' array[$(( 1001 - $( echo -n 1001 ) ))]=1 echo ${array[0]} array[$(( 1001 - $( echo -n 1001 ) ))]=1 echo ${array[0]} unset 'array[0]' array[1001 - $( echo -n 1001 )]=1 echo ${array[0]}