data_1.f90: Fix integer oveflow in integer literal constant.

2006-09-07  Steven G. Kargl  <kargls@comcast.net>

	* gfortran.fortran-torture/compile/data_1.f90: Fix integer oveflow
	in integer literal constant.
  	* gfortran.dg/enum_8.f90: Ditto.
	* gfortran.dg/g77/20030326-1.f: Ditto.

2006-09-07  Steven G. Kargl  <kargls@comcast.net>

	* gfortran.h (gfc_integer_info): Eliminate max_int.
	* arith.c (gfc_arith_init_1): Remove initialization of max_int.
	(gfc_arith_done_1): Remove clearing of max_int.
	(gfc_check_integer_range): Fix range chekcing of overflow.
	* simplify.c (gfc_simplify_not): Construct mask that was max_int.

From-SVN: r116753

gcc/fortran/ChangeLog

-2006-09-05 Paul Thomas <pault@gcc.gnu.org>
+2006-09-07  Steven G. Kargl  <kargls@comcast.net>
+
+	* gfortran.h (gfc_integer_info): Eliminate max_int.
+	* arith.c (gfc_arith_init_1): Remove initialization of max_int.
+	(gfc_arith_done_1): Remove clearing of max_int.
+	(gfc_check_integer_range): Fix range chekcing of overflow.
+	* simplify.c (gfc_simplify_not): Construct mask that was max_int.
+
+2006-09-05  Paul Thomas <pault@gcc.gnu.org>
 
 	PR fortran/28908
 	* gfortran.h : Restore the gfc_dt_list structure and reference

gcc/fortran/arith.c

@@ -195,7 +195,7 @@ gfc_arith_init_1 (void)
       /* These are the numbers that are actually representable by the
          target.  For bases other than two, this needs to be changed.  */
       if (int_info->radix != 2)
-        gfc_internal_error ("Fix min_int, max_int calculation");
+        gfc_internal_error ("Fix min_int calculation");
 
       /* See PRs 13490 and 17912, related to integer ranges.
          The pedantic_min_int exists for range checking when a program
@@ -210,10 +210,6 @@ gfc_arith_init_1 (void)
       mpz_init (int_info->min_int);
       mpz_sub_ui (int_info->min_int, int_info->pedantic_min_int, 1);
 
-      mpz_init (int_info->max_int);
-      mpz_add (int_info->max_int, int_info->huge, int_info->huge);
-      mpz_add_ui (int_info->max_int, int_info->max_int, 1);
-
       /* Range  */
       mpfr_set_z (a, int_info->huge, GFC_RND_MODE);
       mpfr_log10 (a, a, GFC_RND_MODE);
@@ -321,7 +317,6 @@ gfc_arith_done_1 (void)
   for (ip = gfc_integer_kinds; ip->kind; ip++)
     {
       mpz_clear (ip->min_int);
-      mpz_clear (ip->max_int);
       mpz_clear (ip->pedantic_min_int);
       mpz_clear (ip->huge);
     }
@@ -356,7 +351,7 @@ gfc_check_integer_range (mpz_t p, int kind)
     }
 
   if (mpz_cmp (p, gfc_integer_kinds[i].min_int) < 0
-      || mpz_cmp (p, gfc_integer_kinds[i].max_int) > 0)
+      || mpz_cmp (p, gfc_integer_kinds[i].huge) > 0)
     result = ARITH_OVERFLOW;
 
   return result;

gcc/fortran/gfortran.h

@@ -1299,7 +1299,7 @@ gfc_expr;
 typedef struct
 {
   /* Values really representable by the target.  */
-  mpz_t huge, pedantic_min_int, min_int, max_int;
+  mpz_t huge, pedantic_min_int, min_int;
 
   int kind, radix, digits, bit_size, range;
 

gcc/fortran/simplify.c

@@ -2590,6 +2590,7 @@ gfc_simplify_not (gfc_expr * e)
 {
   gfc_expr *result;
   int i;
+  mpz_t mask;
 
   if (e->expr_type != EXPR_CONSTANT)
     return NULL;
@@ -2599,15 +2600,20 @@ gfc_simplify_not (gfc_expr * e)
   mpz_com (result->value.integer, e->value.integer);
 
   /* Because of how GMP handles numbers, the result must be ANDed with
-     the max_int mask.  For radices <> 2, this will require change.  */
+     a mask.  For radices <> 2, this will require change.  */
 
   i = gfc_validate_kind (BT_INTEGER, e->ts.kind, false);
 
-  mpz_and (result->value.integer, result->value.integer,
-	   gfc_integer_kinds[i].max_int);
+  mpz_init (mask);
+  mpz_add (mask, gfc_integer_kinds[i].huge, gfc_integer_kinds[i].huge);
+  mpz_add_ui (mask, mask, 1);
+
+  mpz_and (result->value.integer, result->value.integer, mask);
 
   twos_complement (result->value.integer, gfc_integer_kinds[i].bit_size);
 
+  mpz_clear (mask);
+
   return range_check (result, "NOT");
 }
 

gcc/testsuite/ChangeLog

+2006-09-07  Steven G. Kargl  <kargls@comcast.net>
+
+	* gfortran.fortran-torture/compile/data_1.f90: Fix integer oveflow
+	in integer literal constant.
+  	* gfortran.dg/enum_8.f90: Ditto.
+	* gfortran.dg/g77/20030326-1.f: Ditto.
+
 2006-09-07  Feng Wang  <fengwang@nudt.edu.cn>
 
 	* gfortran.fortran-torture/execute/intrinsic_set_exponent.f90: Fix

gcc/testsuite/gfortran.dg/enum_8.f90

@@ -5,7 +5,7 @@
 program main
   implicit none
   enum, bind (c)
-    enumerator :: pp , qq = 4294967295, rr  ! { dg-error "not initialized with integer" }
+    enumerator :: pp, qq = 4294967295, rr ! { dg-error "too big for its kind" }
   end enum  ! { dg-error "has no ENUMERATORS" }
 
   enum, bind (c)

gcc/testsuite/gfortran.dg/g77/20030326-1.f

@@ -6,5 +6,5 @@
 ! For gfortran, see PR 13490
 !
        integer c
-       c = -2147483648 / (-1) ! { dg-warning "outside symmetric range" "" }
+       c = -2147483648 / (-1) ! { dg-error "too big for its kind" "" }
        end

gcc/testsuite/gfortran.fortran-torture/compile/data_1.f90

@@ -7,5 +7,5 @@ DATA y /a(1.)/ ! used to give an error about non-PARAMETER
 END
 ! this tests the fix for PR 13940
 SUBROUTINE a
-DATA i /x'f95f95f9'/
+DATA i /z'f95f95'/
 END