re PR fortran/29962 (Initialization expressions)

fortran/
2006-12-04  Tobias Burnus  <burnus@net-b.de>

	PR fortran/29962
	* expr.c (check_intrinsic_op): Allow noninteger exponents for F2003.
   
     
testsuite/
2006-12-04  Tobias Burnus  <burnus@net-b.de>

	PR fortran/29962
	* initialization_4.f90: Test noninteger exponents (-std=f95).
	* initialization_5.f90: New test for noninteger exponents with -std=f2003

From-SVN: r119505

gcc/fortran/ChangeLog

+2006-12-04  Tobias Burnus  <burnus@net-b.de>
+
+	PR fortran/29962
+	* expr.c (check_intrinsic_op): Allow noninteger exponents for F2003.
+
 2006-12-04  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/29821

gcc/fortran/expr.c

@@ -1622,9 +1622,11 @@ check_intrinsic_op (gfc_expr * e, try (*check_function) (gfc_expr *))
       if (e->value.op.operator == INTRINSIC_POWER
 	  && check_function == check_init_expr && et0 (op2) != BT_INTEGER)
 	{
-	  gfc_error ("Exponent at %L must be INTEGER for an initialization "
-		     "expression", &op2->where);
-	  return FAILURE;
+	  if (gfc_notify_std (GFC_STD_F2003,"Fortran 2003: Noninteger "
+			      "exponent in an initialization "
+			      "expression at %L", &op2->where)
+	      == FAILURE)
+	    return FAILURE;
 	}
 
       break;

gcc/testsuite/ChangeLog

+2006-12-04  Tobias Burnus  <burnus@net-b.de>
+
+	PR fortran/29962
+	* initialization_4.f90: Test noninteger exponents (-std=f95).
+	* initialization_5.f90: New test for noninteger exponents
+	  with -std=f2003.
+
 2006-12-04  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/29821

gcc/testsuite/gfortran.dg/initialization_4.f90

@@ -3,4 +3,5 @@
 ! { dg-do compile }
 ! { dg-options "-std=f95" }
 real, parameter :: pi = 4.0*Atan(1.0) ! { dg-error "Evaluation of nonstandard initialization expression" }
+real, parameter :: three = 27.0**(1.0/3.0) ! { dg-error "Noninteger exponent in an initialization expression" }
 end

gcc/testsuite/gfortran.dg/initialization_5.f90

+! initialization expression, now allowed in Fortran 2003
+! PR fortran/29962
+! { dg-do run }
+! { dg-options "-std=f2003 -fall-intrinsics" }
+  real, parameter :: three = 27.0**(1.0/3.0)
+  if(abs(three-3.0)>epsilon(three)) call abort()
+end