[bash 4.2] `declare -g' bug?

[Clark J. Wang]

See following script result:

bash# cat declare-g.sh
#!/bin/bash

var=global

f1()
{
    declare var=local

    f2
    echo 3.$var
}

f2()
{
    declare -g var

    echo 1.$var
    var=global-changed
    echo 2.$var
}

f1
echo 4.$var
bash# /usr/local/bash-4.2.0/bin/bash declare-g.sh
1.local
2.global-changed
3.global-changed
4.global
bash#

I think the right result should be:

1.global
2.global-changed
3.local
4.global-changed

-- 
Clark