Fix fortran/93686 -- ICE matching data statements with derived-type pointers.

gcc/fortran/ChangeLog:

2020-04-06  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/93686
	* decl.c (gfc_match_data): Handle data matching for derived type
	pointers.

gcc/testsuite/ChangeLog:

2020-04-06  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/93686
	* gfortran.dg/pr93686_1.f90: New test.
	* gfortran.dg/pr93686_2.f90: Likewise.
	* gfortran.dg/pr93686_3.f90: Likewise.
	* gfortran.dg/pr93686_4.f90: Likewise.

gcc/fortran/ChangeLog

+2020-04-06  Steven G. Kargl  <kargl@gcc.gnu.org>
+
+	PR fortran/93686
+	* decl.c (gfc_match_data): Handle data matching for derived type
+	pointers.
+
 2020-04-02  Tobias Burnus  <tobias@codesourcery.com>
 
 	* gfortran.h (gfc_resolve_formal_arglist): Add prototype.

gcc/fortran/decl.c

@@ -696,6 +696,10 @@ gfc_match_data (void)
 	  /* F2008:C567 (R536) A data-i-do-object or a variable that appears
 	     as a data-stmt-object shall not be an object designator in which
 	     a pointer appears other than as the entire rightmost part-ref.  */
+	  if (!e->ref && e->ts.type == BT_DERIVED
+	      && e->symtree->n.sym->attr.pointer)
+	    goto partref;
+
 	  ref = e->ref;
 	  if (e->symtree->n.sym->ts.type == BT_DERIVED
 	      && e->symtree->n.sym->attr.pointer

gcc/testsuite/ChangeLog

+2020-04-06  Steven G. Kargl  <kargl@gcc.gnu.org>
+
+	PR fortran/93686
+	* gfortran.dg/pr93686_1.f90: New test.
+	* gfortran.dg/pr93686_2.f90: Likewise.
+	* gfortran.dg/pr93686_3.f90: Likewise.
+	* gfortran.dg/pr93686_4.f90: Likewise.
+
 2020-04-06  Joel Brobecker  <brobecker@adacore.com>
 
 	* gcc.target/arm/div64-unwinding.c: Skip on vxworks_kernel targets.

gcc/testsuite/gfortran.dg/pr93686_1.f90

+! { dg-do compile }
+! PR fortran/93686
+
+program p
+   type t
+      integer :: a
+   end type
+   type(t), pointer :: x
+   data x /t(2)/ ! { dg-error "part-ref with pointer attribute near ... is not rightmost part-ref of data-stmt-object" }
+end

gcc/testsuite/gfortran.dg/pr93686_2.f90

+! { dg-do compile }
+! PR fortran/93686
+
+program p
+   type t
+      integer :: a = 1
+   end type
+   type(t), pointer :: x
+   data x /t(2)/ ! { dg-error "part-ref with pointer attribute near ... is not rightmost part-ref of data-stmt-object" }
+end

gcc/testsuite/gfortran.dg/pr93686_3.f90

+! { dg-do compile }
+! PR fortran/93686
+
+program p
+   type t
+   end type
+   type(t), pointer :: x
+   data x /t()/ ! { dg-error "part-ref with pointer attribute near ... is not rightmost part-ref of data-stmt-object" }
+end

gcc/testsuite/gfortran.dg/pr93686_4.f90

+! { dg-do compile }
+! PR fortran/93686
+
+type t
+end type
+type(t), pointer :: x
+data x / ! { dg-error "part-ref with pointer attribute near ... is not rightmost part-ref of data-stmt-object" }
+end