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bug fix for c-torture test execute/bf-sign-2.c
- To: tege at matematik dot su dot se (Torbjorn Granlund), egcs at cygnus dot com
- Subject: bug fix for c-torture test execute/bf-sign-2.c
- From: Joern Rennecke <amylaar at cygnus dot co dot uk>
- Date: Wed, 22 Oct 1997 14:54:04 +0100 (BST)
execute/bf-sign-2.c currently fails for targets with 16 bit ints.
Here is a fix:
Wed Oct 22 14:08:50 1997 J"orn Rennecke <amylaar@cygnus.co.uk>
* execute/bf-sign-2.c (struct X): New member u15.
(main): Check u15. Check for u31 depends on size of int.
Index: testsuite/gcc.c-torture/execute/bf-sign-2.c
===================================================================
RCS file: /cvs/cvsfiles/egcs/gcc/testsuite/gcc.c-torture/execute/bf-sign-2.c,v
retrieving revision 1.1.1.1
diff -p -r1.1.1.1 bf-sign-2.c
*** bf-sign-2.c 1997/08/19 07:36:07 1.1.1.1
--- bf-sign-2.c 1997/10/22 13:09:46
***************
*** 10,16 ****
We test the behavior by subtracting two from the promoted value: this will
result in a negitive value for signed types, a positive value for unsigned
types. This test (of course) assumes that the compiler is correctly
! implementing signed and unsigned arithmatic.
*/
struct X {
--- 10,16 ----
We test the behavior by subtracting two from the promoted value: this will
result in a negitive value for signed types, a positive value for unsigned
types. This test (of course) assumes that the compiler is correctly
! implementing signed and unsigned arithmetic.
*/
struct X {
*************** struct X {
*** 21,26 ****
--- 21,27 ----
unsigned long int u32:32;
unsigned long long ull3 :3;
unsigned long long ull35:35;
+ unsigned u15:15;
};
struct X x;
*************** main ()
*** 36,43 ****
if ((x.s32 - 2) >= 0) /* promoted value should be signed */
abort ();
! if ((x.u31 - 2) >= 0) /* promoted value should be signed */
abort ();
if ((x.u32 - 2) < 0) /* promoted value should be UNsigned */
abort ();
--- 37,55 ----
if ((x.s32 - 2) >= 0) /* promoted value should be signed */
abort ();
! if ((x.u15 - 2) >= 0) /* promoted value should be signed */
abort ();
+
+ if (sizeof (struct { unsigned long u32:32;}) <= sizeof (int))
+ {
+ if ((x.u31 - 2) >= 0) /* promoted value should be signed */
+ abort ();
+ }
+ else
+ {
+ if ((x.u31 - 2) < 0) /* promoted value should be UNsigned */
+ abort ();
+ }
if ((x.u32 - 2) < 0) /* promoted value should be UNsigned */
abort ();