Re: [PATCH] Fix xfail Sparc pattern

[Fernando Nasser <fnasser at redhat dot com>]

"David S. Miller" wrote:
> 
> The xfail here applies to all Sparc platforms, not just sparc-*.
                 ^^^^^^^
> 

David,

You mean _does not_ apply.  The code is actually clearing the 
xfail setting for all architectures.

But before doing this, lets ask some questions areound (see below).



The way this is set up it will normally XFAIL unless one explicitly
unmark it.  A maintenance nightmare.

The comments say that the problem is:

        # The problem is that GDB confuses stepping through the call
        # dummy with hitting the breakpoint at the end of the call
dummy.
        # Will be fixed once all architectures define
        # CALL_DUMMY_BREAKPOINT_OFFSET.

Some architectures (listed in the clear_xfail commands) already define
it.
I suspect that many others may do it as well and noone ever unmarked
the xfail for this test.

Also, HP seems to define CALL_DUMMY_HAS_COMPLETED that also makes this
test
pass.  I wonder if this is some HP equivalent to the above.

The comments also say that this will work, regardless of the macro, for
the targets that:

        # This doesn't occur if the call dummy starts with a call,
        # because we are out of the dummy by the first time the inferior
        # stops.

and also for:

	# It works with the generic inferior function calling code too.

So, here is a question for Andrew:  what is the current status on
CALL_DUMMY_BREAKPOINT_OFFSET (and CALL_DUMMY_HAS_COMPLETED)?

I wonder if we should activate this test and see where it fails and
start marking as XFAILS (KFAILS actually) and entering a bug report 
when we see the regressions.

Regards to all.
Fernando



> 2002-04-17  David S. Miller  <davem@redhat.com>
> 
>         * gdb.base/watchpoint.exp: Fix sparc xfail to be sparc*-*-*
> 
> --- ./testsuite/gdb.base/watchpoint.exp.~1~     Tue Apr 16 10:56:47 2002
> +++ ./testsuite/gdb.base/watchpoint.exp Tue Apr 16 10:58:53 2002
> @@ -390,7 +390,7 @@ proc test_stepping {} {
>         # The following architectures define CALL_DUMMY_BREAKPOINT_OFFSET.
>         clear_xfail "alpha-*-*"
>         clear_xfail "mips*-*-*"
> -       clear_xfail "sparc-*-*"
> +       clear_xfail "sparc*-*-*"
>         clear_xfail "hppa*-*-*bsd*"
>         # It works with the generic inferior function calling code too.
>         clear_xfail "mn10200*-*-*"

-- 
Fernando Nasser
Red Hat Canada Ltd.                     E-Mail:  fnasser@redhat.com
2323 Yonge Street, Suite #300
Toronto, Ontario   M4P 2C9