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SubjectRe: ftrace breaks sparc64 build

On Mon, 5 Jan 2009, Sam Ravnborg wrote:

> >
> > Probably the same issue. The problem is that the first use of a variable
> > is in the OR section of an if statement that does a return.
> >
> > if (x || !(y = init_me())
> > return;
> >
> > use_me(y);
> >
>
> More warnings:
> fs/partitions/check.c: In function `rescan_partitions':
> fs/partitions/check.c:511: warning: 'state' might be used uninitialized in this function
>
> => follow same pattern
>
> fs/compat_ioctl.c: In function `ppp_sock_fprog_ioctl_trans':
> fs/compat_ioctl.c:859: warning: 'fptr32' might be used uninitialized in this function
> fs/compat_ioctl.c: In function `do_fontx_ioctl':
> fs/compat_ioctl.c:1082: warning: 'data' might be used uninitialized in this function
> fs/compat_ioctl.c: In function `do_atmif_sioc':
> fs/compat_ioctl.c:1302: warning: 'data' might be used uninitialized in this function
> fs/compat_ioctl.c: In function `do_atm_ioctl':
> fs/compat_ioctl.c:1272: warning: 'data' might be used uninitialized in this function
> fs/compat_ioctl.c: In function `mtd_rw_oob':
> fs/compat_ioctl.c:1421: warning: 'data' might be used uninitialized in this function
> fs/compat_ioctl.c: In function `do_usbdevfs_discsignal':
> fs/compat_ioctl.c:1650: warning: 'uctx' might be used uninitialized in this function
>
> This is:
> if (get_user(flen, &u_fprog32->len) ||
> get_user(fptr32, &u_fprog32->filter))
> return -EFAULT;

Is this all sparc cross compiler? I'm trying to reproduce it on x86 with
no avail :-(

I would like to test other ways to change the macro, but to do so, I need
to get a compiler that will produce the warnings that you see. What
version of gcc are you using?

Thanks,

-- Steve




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