[Bug fortran/41479] [4.3/4.4/4.5 Regression] intent(out) for types with default initialization

["burnus at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #8 from burnus at gcc dot gnu dot org  2009-10-02 09:54 -------
(In reply to comment #7)
> Checking the 4.2 branch and trans-expr.c in trunk, it appears that
> this chunk of code in gfc_conv_function_call() has gone missing.

It was removed with the following patch:


Date: Tue Jul 24 19:16:36 2007
New Revision: 126885 / 126886

URL: http://gcc.gnu.org/viewcvs?view=revision&revision=126885
     http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=126886
Log:
2007-07-24 Paul Thomas <pault@gcc.gnu.org>

        PR fortran/31205
        PR fortran/32842
        * trans-expr.c (gfc_conv_function_call): Remove the default
        initialization of intent(out) derived types.

>From http://gcc.gnu.org/ml/gcc-patches/2007-06/msg02151.html:
  (ii) Remove the initialization of derived types with a default
  initializer from the caller to the callee.  The reasons for doing this
  are discussed in the PR (PR31205).  It has a gratifying effect on passing
  derived types with allocatable components, in that the amount of
  generated code goes down (see alloc_comp_basics_1.f90).

Thus I think that part is OK. (Doing the default initialization in the caller
leads to wrong code if the caller does not know the interface of called
procedure.) However, some callee initialization is now missing.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41479