re PR fortran/47550 (PURE with VALUE and w/o INTENT: add gfc_notify_std (GFC_STD_F2008 ?)

2011-02-11  Tobias Burnus  <burnus@net-b.de>

        PR fortran/47550
        * resolve.c (resolve_formal_arglist): PURE with VALUE
        and no INTENT: Add -std= diagnostics.

2011-02-11  Tobias Burnus  <burnus@net-b.de>

        PR fortran/47550
        * gfortran.dg/pure_formal_2.f90: New.

From-SVN: r170060

gcc/fortran/ChangeLog

+2011-02-11  Tobias Burnus  <burnus@net-b.de>
+
+	PR fortran/47550
+	* resolve.c (resolve_formal_arglist): PURE with VALUE
+	and no INTENT: Add -std= diagnostics.
+
 2011-02-09  Janus Weil  <janus@gcc.gnu.org>
 
 	PR fortran/47352

gcc/fortran/resolve.c

@@ -341,18 +341,32 @@ resolve_formal_arglist (gfc_symbol *proc)
       if (gfc_pure (proc) && !sym->attr.pointer
 	  && sym->attr.flavor != FL_PROCEDURE)
 	{
-	  if (proc->attr.function && sym->attr.intent != INTENT_IN
-	      && !sym->attr.value)
+	  if (proc->attr.function && sym->attr.intent != INTENT_IN)
+	    {
+	      if (sym->attr.value)
+		gfc_notify_std (GFC_STD_F2008, "Fortran 2008: Argument '%s' "
+				"of pure function '%s' at %L with VALUE "
+				"attribute but without INTENT(IN)", sym->name,
+				proc->name, &sym->declared_at);
+	      else
 		gfc_error ("Argument '%s' of pure function '%s' at %L must be "
 			   "INTENT(IN) or VALUE", sym->name, proc->name,
 			   &sym->declared_at);
+	    }
 
-	  if (proc->attr.subroutine && sym->attr.intent == INTENT_UNKNOWN
-	      && !sym->attr.value)
+	  if (proc->attr.subroutine && sym->attr.intent == INTENT_UNKNOWN)
+	    {
+	      if (sym->attr.value)
+		gfc_notify_std (GFC_STD_F2008, "Fortran 2008: Argument '%s' "
+				"of pure subroutine '%s' at %L with VALUE "
+				"attribute but without INTENT", sym->name,
+				proc->name, &sym->declared_at);
+	      else
 		gfc_error ("Argument '%s' of pure subroutine '%s' at %L must "
 		       "have its INTENT specified or have the VALUE "
 		       "attribute", sym->name, proc->name, &sym->declared_at);
 	    }
+	}
 
       if (proc->attr.implicit_pure && !sym->attr.pointer
 	  && sym->attr.flavor != FL_PROCEDURE)

gcc/testsuite/ChangeLog

+2011-02-11  Tobias Burnus  <burnus@net-b.de>
+
+	PR fortran/47550
+	* gfortran.dg/pure_formal_2.f90: New.
+
 2011-02-11  Pat Haugen <pthaugen@us.ibm.com>
 
 	PR rtl-optimization/47614

gcc/testsuite/gfortran.dg/pure_formal_2.f90

+! { dg-do compile }
+! { dg-options "-std=f2003" }
+!
+! PR fortran/47550
+! Follow up to: PR fortran/47507
+!
+! PURE procedures: Allow arguments w/o INTENT if they are VALUE
+!
+
+pure function f(x) ! { dg-error "Fortran 2008: Argument 'x' of pure function" }
+  real, VALUE :: x
+  real :: f
+  f = sin(x)
+end function f
+
+pure subroutine sub(x) ! { dg-error "Fortran 2008: Argument 'x' of pure subroutine" }
+  real, VALUE :: x
+end subroutine sub