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Re: Patch for Microsoft bitfield layout
- From: Richard Sandiford <rsandifo at redhat dot com>
- To: gcc-patches at gcc dot gnu dot org
- Cc: donnte at microsoft dot com
- Date: 27 Nov 2002 15:22:49 +0000
- Subject: Re: Patch for Microsoft bitfield layout
- References: <wvnbs4nhzvc.fsf@talisman.cambridge.redhat.com>
Richard Sandiford <rsandifo@redhat.com> writes:
> *** /dev/null Tue Nov 14 21:44:43 2000
> --- testsuite/gcc.dg/bitfld-5.c Tue Nov 12 12:46:32 2002
> ***************
> *** 0 ****
> --- 1,12 ----
> + /* { dg-options "" } */
> + #include <limits.h>
> +
> + struct s
> + {
> + int i1 : sizeof (int) * CHAR_BIT;
> + int i2 : sizeof (int) * CHAR_BIT;
> + int i3 : sizeof (int) * CHAR_BIT;
> + int i4 : sizeof (int) * CHAR_BIT;
> + };
> +
> + int f[sizeof (struct s) != sizeof (int) * 4 ? -1 : 1];
This test case wasn't enough to show the problem on interix
because its BIGGEST_ALIGNMENT is 128 (vs. 64 for sh64-elf).
I've applied the following patch as an obvious extension
of the test above.
Richard
Index: ChangeLog
===================================================================
RCS file: /cvs/gcc/gcc/gcc/testsuite/ChangeLog,v
retrieving revision 1.2236
diff -c -p -d -r1.2236 ChangeLog
*** ChangeLog 27 Nov 2002 13:49:30 -0000 1.2236
--- ChangeLog 27 Nov 2002 15:17:08 -0000
***************
*** 1,3 ****
--- 1,7 ----
+ 2002-11-27 Richard Sandiford <rsandifo@redhat.com>
+
+ * gcc.dg/bitfld-6.c: New test.
+
Wed Nov 27 14:37:34 CET 2002 Jan Hubicka <jh@suse.cz>
* gcc.c-torture/execute/20021127.[cx]: New test.
Index: gcc.dg/bitfld-6.c
===================================================================
RCS file: gcc.dg/bitfld-6.c
diff -N gcc.dg/bitfld-6.c
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- gcc.dg/bitfld-6.c 27 Nov 2002 15:17:08 -0000
***************
*** 0 ****
--- 1,16 ----
+ /* { dg-options "" } */
+ #include <limits.h>
+
+ struct s
+ {
+ int i1 : sizeof (int) * CHAR_BIT;
+ int i2 : sizeof (int) * CHAR_BIT;
+ int i3 : sizeof (int) * CHAR_BIT;
+ int i4 : sizeof (int) * CHAR_BIT;
+ int i5 : sizeof (int) * CHAR_BIT;
+ int i6 : sizeof (int) * CHAR_BIT;
+ int i7 : sizeof (int) * CHAR_BIT;
+ int i8 : sizeof (int) * CHAR_BIT;
+ };
+
+ int f[sizeof (struct s) != sizeof (int) * 8 ? -1 : 1];