2010-09-04  Tobias Burnus  <burnus@net-b.de>

        PR fortran/45530
	* resolve.c (resolve_fl_namelist): Change constraint checking
	order to prevent endless loop.

2010-09-04  Tobias Burnus  <burnus@net-b.de>

        PR fortran/45530
	* gfortran.dg/namelist_63.f90: New.

Index: gcc/fortran/resolve.c
===================================================================
--- gcc/fortran/resolve.c	(Revision 163859)
+++ gcc/fortran/resolve.c	(Arbeitskopie)
@@ -11566,6 +11566,46 @@ resolve_fl_namelist (gfc_symbol *sym)
   gfc_namelist *nl;
   gfc_symbol *nlsym;
 
+  for (nl = sym->namelist; nl; nl = nl->next)
+    {
+      /* Reject namelist arrays of assumed shape.  */
+      if (nl->sym->as && nl->sym->as->type == AS_ASSUMED_SHAPE
+	  && gfc_notify_std (GFC_STD_F2003, "NAMELIST array object '%s' "
+			     "must not have assumed shape in namelist "
+			     "'%s' at %L", nl->sym->name, sym->name,
+			     &sym->declared_at) == FAILURE)
+	    return FAILURE;
+
+      /* Reject namelist arrays that are not constant shape.  */
+      if (is_non_constant_shape_array (nl->sym))
+	{
+	  gfc_error ("NAMELIST array object '%s' must have constant "
+		     "shape in namelist '%s' at %L", nl->sym->name,
+		     sym->name, &sym->declared_at);
+	  return FAILURE;
+	}
+
+      /* Namelist objects cannot have allocatable or pointer components.  */
+      if (nl->sym->ts.type != BT_DERIVED)
+	continue;
+
+      if (nl->sym->ts.u.derived->attr.alloc_comp)
+	{
+	  gfc_error ("NAMELIST object '%s' in namelist '%s' at %L cannot "
+		     "have ALLOCATABLE components",
+		     nl->sym->name, sym->name, &sym->declared_at);
+	  return FAILURE;
+	}
+
+      if (nl->sym->ts.u.derived->attr.pointer_comp)
+	{
+	  gfc_error ("NAMELIST object '%s' in namelist '%s' at %L cannot "
+		     "have POINTER components", 
+		     nl->sym->name, sym->name, &sym->declared_at);
+	  return FAILURE;
+	}
+    }
+
   /* Reject PRIVATE objects in a PUBLIC namelist.  */
   if (gfc_check_access(sym->attr.access, sym->ns->default_access))
     {
@@ -11607,46 +11647,6 @@ resolve_fl_namelist (gfc_symbol *sym)
 	}
     }
 
-  for (nl = sym->namelist; nl; nl = nl->next)
-    {
-      /* Reject namelist arrays of assumed shape.  */
-      if (nl->sym->as && nl->sym->as->type == AS_ASSUMED_SHAPE
-	  && gfc_notify_std (GFC_STD_F2003, "NAMELIST array object '%s' "
-			     "must not have assumed shape in namelist "
-			     "'%s' at %L", nl->sym->name, sym->name,
-			     &sym->declared_at) == FAILURE)
-	    return FAILURE;
-
-      /* Reject namelist arrays that are not constant shape.  */
-      if (is_non_constant_shape_array (nl->sym))
-	{
-	  gfc_error ("NAMELIST array object '%s' must have constant "
-		     "shape in namelist '%s' at %L", nl->sym->name,
-		     sym->name, &sym->declared_at);
-	  return FAILURE;
-	}
-
-      /* Namelist objects cannot have allocatable or pointer components.  */
-      if (nl->sym->ts.type != BT_DERIVED)
-	continue;
-
-      if (nl->sym->ts.u.derived->attr.alloc_comp)
-	{
-	  gfc_error ("NAMELIST object '%s' in namelist '%s' at %L cannot "
-		     "have ALLOCATABLE components",
-		     nl->sym->name, sym->name, &sym->declared_at);
-	  return FAILURE;
-	}
-
-      if (nl->sym->ts.u.derived->attr.pointer_comp)
-	{
-	  gfc_error ("NAMELIST object '%s' in namelist '%s' at %L cannot "
-		     "have POINTER components", 
-		     nl->sym->name, sym->name, &sym->declared_at);
-	  return FAILURE;
-	}
-    }
-
 
   /* 14.1.2 A module or internal procedure represent local entities
      of the same type as a namelist member and so are not allowed.  */
Index: gcc/testsuite/gfortran.dg/namelist_63.f90
===================================================================
--- gcc/testsuite/gfortran.dg/namelist_63.f90	(Revision 0)
+++ gcc/testsuite/gfortran.dg/namelist_63.f90	(Revision 0)
@@ -0,0 +1,28 @@
+! { dg-do compile }
+!
+! PR fortran/45530
+!
+! Contributed by david.sagan@gmail.com
+!
+program test
+implicit none
+
+type c_struct
+  type (g_struct), pointer :: g
+end type
+
+type g_struct
+  type (p_struct), pointer :: p
+end type
+
+type p_struct
+  type (region_struct), pointer :: r
+end type
+
+type region_struct
+  type (p_struct) plot
+end type
+
+type (c_struct) curve(10)
+namelist / params / curve ! { dg-error "NAMELIST object .curve. in namelist .params. at .1. cannot have POINTER components" }
+end program