Date: Tue, 29 Apr 1997 12:40:05 -0700 (PDT) From: j.loverso@opengroup.org To: freebsd-gnats-submit@freebsd.org Subject: kern/3419: __attribute__((__unused__)) doesn't work Message-ID: <199704291940.MAA05042@hub.freebsd.org> Resent-Message-ID: <199704291950.MAA05586@hub.freebsd.org>
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>Number: 3419
>Category: kern
>Synopsis: __attribute__((__unused__)) doesn't work
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Apr 29 12:50:01 PDT 1997
>Last-Modified:
>Originator: John LoVerso
>Organization:
Open Group Research Inst
>Release: 2.2.1
>Environment:
FreeBSD freebase.osf.org 2.2.1-RELEASE FreeBSD 2.2.1-RELEASE #0: Thu Mar 27 08:40:39 EST 1997 loverso@freebase.osf.org:/usr/src/sys/compile/USEFUL+snd i386
>Description:
The system comes with GCC 2.7.2.1. /usr/include/sys/cdefs.h says:
#if __GNUC__ == 2 && __GNUC_MINOR__ >= 7 || __GNUC__ >= 3
#define __dead
#define __dead2 __attribute__((__noreturn__))
#define __pure
#define __pure2 __attribute__((__const__))
#define __unused __attribute__((__unused__))
#endif
However,I tried to compile Berk DB 2.0. It has code like this:
(starting at line 340)
typedef struct _hoffpage {
u_int8_t type; /* 00: Page type and delete flag. */
u_int8_t __unused[3]; /* 01-03: Padding, unused. */
When it gets compiled, it complains:
../dist/../include/db_page.h:342: parse error before `['
../dist/../include/db_page.h:342: warning: no semicolon at end of struct
or union
It appears that __attribute__((__unused__)) doesn't work.
I'm not sure which catagory this bug is in. Is it kern? (/usr/include/sys/cdef.h)
Is it GNU (gcc). Is it misc?
>How-To-Repeat:
Try to compile DB 2.0
fetch ftp://ftp.sleepycat.com/pub/db.tar.gz
tar zxvf db.tar.gz
cd db-2.0.4/build.unix
../dist/configure
make
>Fix:
Fix GCC?
Fix /usr/include/sys/cdefs.h
>Audit-Trail:
>Unformatted:
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