1 This fix has been developed inhouse. Patch has been submitted upstream but 

     2 has not been accepted yet. The details can be found at

     3 https://github.com/att/ast/issues/7

     4 --- INIT.2012-08-01.old/src/cmd/ksh93/sh/subshell.c	2016-03-01 04:01:06.513890578 -0800

     5 +++ INIT.2012-08-01/src/cmd/ksh93/shsubshell.c	2016-03-01 04:02:43.617872391 -0800

     6 @@ -260,9 +260,6 @@

     7  	shp = sp->shp;

     8  	dp = shp->var_tree;

     9  

    10 -	/* don't bother to save if in newer scope */

    11 -	if(sp->var!=shp->var_tree && sp->var!=shp->var_base && shp->last_root==shp->var_tree)

    12 -		return(np);

    13  	if((ap=nv_arrayptr(np)) && (mp=nv_opensub(np)))

    14  	{

    15  		shp->last_root = ap->table;