diff mbox series

[Committed] PR fortran/87991 -- Pointer data object requires a target

Message ID 20190814042335.GA95792@troutmask.apl.washington.edu
State New
Headers show
Series [Committed] PR fortran/87991 -- Pointer data object requires a target | expand

Commit Message

Steve Kargl Aug. 14, 2019, 4:23 a.m. UTC 
Committed as obviously.

2019-08-13  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/87991
	* resolve.c (check_data_variable): data-stmt-object with pointer
	attribute requires a data-stmt-value with the target attribute.
 
2019-08-13  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/87991
	* gfortran.dg/pr87991.f90: New test.
diff mbox series

Patch

Index: gcc/fortran/resolve.c
===================================================================
--- gcc/fortran/resolve.c	(revision 274398)
+++ gcc/fortran/resolve.c	(working copy)
@@ -15726,8 +15726,6 @@  check_data_variable (gfc_data_variable *var, locus *wh
       return false;
     }
 
-  has_pointer = sym->attr.pointer;
-
   if (gfc_is_coindexed (e))
     {
       gfc_error ("DATA element %qs at %L cannot have a coindex", sym->name,
@@ -15735,19 +15733,30 @@  check_data_variable (gfc_data_variable *var, locus *wh
       return false;
     }
 
+  has_pointer = sym->attr.pointer;
+
   for (ref = e->ref; ref; ref = ref->next)
     {
       if (ref->type == REF_COMPONENT && ref->u.c.component->attr.pointer)
 	has_pointer = 1;
 
-      if (has_pointer
-	    && ref->type == REF_ARRAY
-	    && ref->u.ar.type != AR_FULL)
-	  {
-	    gfc_error ("DATA element %qs at %L is a pointer and so must "
-			"be a full array", sym->name, where);
-	    return false;
-	  }
+      if (has_pointer)
+	{
+	  if (ref->type == REF_ARRAY && ref->u.ar.type != AR_FULL)
+	    {
+	      gfc_error ("DATA element %qs at %L is a pointer and so must "
+			 "be a full array", sym->name, where);
+	      return false;
+	    }
+
+	  if (values.vnode->expr->expr_type == EXPR_CONSTANT)
+	    {
+	      gfc_error ("DATA object near %L has the pointer attribute "
+			 "and the corresponding DATA value is not a valid "
+			 "initial-data-target", where);
+	      return false;
+	    }
+	}
     }
 
   if (e->rank == 0 || has_pointer)
Index: gcc/testsuite/gfortran.dg/pr87991.f90
===================================================================
--- gcc/testsuite/gfortran.dg/pr87991.f90	(nonexistent)
+++ gcc/testsuite/gfortran.dg/pr87991.f90	(working copy)
@@ -0,0 +1,11 @@ 
+! { dg-do compile }
+! { dg-options "-w" }
+! PR fortran/87991
+program p
+   type t
+      character(:), pointer :: c
+   end type
+   type(t) :: x
+   allocate (character(3) :: x%c)
+   data x%c /'abc'/   ! { dg-error "has the pointer attribute" }
+end