re PR fortran/47507 (PURE functions with VALUE arguments invalidly rejectd)

2011-01-28  Tobias Burnus  <burnus@net-b.de>

        PR fortran/47507
        * resolve.c (resolve_formal_arglist): Allow arguments with VALUE
        attribute also without INTENT.

2011-01-28  Tobias Burnus  <burnus@net-b.de>

        PR fortran/47507
        * gfortran.dg/pure_formal_1.f90: New.

From-SVN: r169372

gcc/fortran/ChangeLog

 2011-01-28  Tobias Burnus  <burnus@net-b.de>
 
+	PR fortran/47507
+	* resolve.c (resolve_formal_arglist): Allow arguments with VALUE
+	attribute also without INTENT.
+
+2011-01-28  Tobias Burnus  <burnus@net-b.de>
+
 	* gfortran.texi (Fortran 2003 status): Mention support for
 	nonconstant namelist variables.
 

gcc/fortran/resolve.c

@@ -338,15 +338,17 @@ 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)
+	  if (proc->attr.function && sym->attr.intent != INTENT_IN
+	      && !sym->attr.value)
 	    gfc_error ("Argument '%s' of pure function '%s' at %L must be "
-		       "INTENT(IN)", sym->name, proc->name,
+		       "INTENT(IN) or VALUE", sym->name, proc->name,
 		       &sym->declared_at);
 
-	  if (proc->attr.subroutine && sym->attr.intent == INTENT_UNKNOWN)
+	  if (proc->attr.subroutine && sym->attr.intent == INTENT_UNKNOWN
+	      && !sym->attr.value)
 	    gfc_error ("Argument '%s' of pure subroutine '%s' at %L must "
-		       "have its INTENT specified", sym->name, proc->name,
-		       &sym->declared_at);
+		       "have its INTENT specified or have the VALUE "
+		       "attribute", sym->name, proc->name, &sym->declared_at);
 	}
 
       if (proc->attr.implicit_pure && !sym->attr.pointer

gcc/testsuite/ChangeLog

+2011-01-28  Tobias Burnus  <burnus@net-b.de>
+
+	PR fortran/47507
+	* gfortran.dg/pure_formal_1.f90: New.
+
 2011-01-28  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/42894

gcc/testsuite/gfortran.dg/pure_formal_1.f90

+! { dg-do compile }
+!
+! PR fortran/47507
+!
+! PURE procedures: Allow arguments w/o INTENT if they are VALUE
+!
+
+pure function f(x)
+  real, VALUE :: x
+  real :: f
+  f = sin(x)
+end function f
+
+pure subroutine sub(x)
+  real, VALUE :: x
+end subroutine sub