[Patch, fortran] PR31211 - wrong code generated for pointer returning function as actual argument

[Paul Richard Thomas]

:ADDPATCH fortran:

This one is easy.  Scalar pointer functions were de-referenced in
gfc_conv_expr_reference and then an address expression built.  This
did not help the cause when the result was null()!  The fix adds an
extra block to this function, such that the pointer result is
returned.  Note that arrays are handled, correctly elsewhere.

Bootstrapped and regtested on x86_ia64 - OK for trunk?

Paul

2007-07-27  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/31211
	* trans-expr.c (gfc_conv_expr_reference): Add block for case of
	scalar pointer functions so that NULL result is correctly
	handled.

2007-07-27  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/31211
	* gfortran.dg/actual_pointer_function_1.f90: New test.

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