Type information in GCC Tree's

[vinay p <vinaykumar.undefined@xxxxxxxxx>]

Hello,
       Iam working on a project in shape analysis in that I need to find the
type of the variables.i.e
     
struct a
{
  a *ptr;
}

how can i know the type of "ptr".Is there any API to access the Tree's type
information..


--regards
@vinay