Re: deallocating derived type arrays with allocatable components

[Brooks Moses <brooks dot moses at codesourcery dot com>]

Chris Talley wrote:
> I have a derived type array that contains allocatable components. If I
> deallocate the derived type array, does gfortran deallocate the
> allocatable components for me or do I have to deallocate them myself
> prior to deallocating the derived type array. Currently, I am
> currently using gcc4.2.0-20070307.
> Thanks for your help!

They are automatically deallocated for you.  This is a requirement of 
the Fortran standard regarding allocatable components (and is one of the 
reasons why allocatable components didn't appear in GFortran until 
version 4.2; it took a fair bit of work to get it all right).

In general, you can work from the axiom that it is never possible to 
leak memory using allocatable arrays and components.

(Note that this is not true of derived types with pointer components, 
however.)

- Brooks