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Date: Sat, 25 Aug 2001 00:59:57 -0500
From: Bob McElrath <mcelrath@draal.physics.wisc.edu>
To: linux-kernel@vger.kernel.org
Subject: basic module bug
Message-ID: <20010825005957.Q21497@draal.physics.wisc.edu>
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What's wrong with this minimal module?

    /* test module */
    #ifndef __KERNEL__
    #define __KERNEL__
    #ifndef MODULE
    #define MODULE
    #endif
    #include <linux/module.h>
    #include <linux/kernel.h>
    #include <linux/malloc.h>
    #ifdef MODULE
    int init_module(void)
    #else
    int test_init(void)
    #endif
    {
            return 0;
    }
    #ifdef MODULE
    void cleanup_module(void)
    {
    }
    #endif
    #endif

both egcs 2.91.66 and redhat's gcc 2.96-85 barf on it:

In file included from /usr/src/linux/include/asm/semaphore.h:11,
                 from /usr/src/linux/include/linux/fs.h:198,
                 from /usr/src/linux/include/linux/capability.h:17,
                 from /usr/src/linux/include/linux/binfmts.h:5,
                 from /usr/src/linux/include/linux/sched.h:9,
                 from /usr/src/linux/include/linux/mm.h:4,
                 from /usr/src/linux/include/linux/slab.h:14,
                 from /usr/src/linux/include/linux/malloc.h:4,
                 from test.c:11:
/usr/src/linux/include/asm/current.h:4: global register variable follows a =
function definition
/usr/src/linux/include/asm/current.h:4: warning: call-clobbered register us=
ed for global register variable

What have I done wrong?

Thanks,
-- Bob

Bob McElrath (rsmcelrath@students.wisc.edu)=20
Univ. of Wisconsin at Madison, Department of Physics

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