Hello Mikey,
On Thu, Mar 07, 2013 at 10:14:30AM +1100, Michael Neuling wrote:
> Philippe De Muyter <p...@macqel.be> wrote:
>
> > On Thu, Mar 07, 2013 at 09:09:48AM +1100, Michael Neuling wrote:
> > > > bisect tells me that since your commit
> > > > 9422de3e953d0e60eb95f5430a9dd803eec1c6d7
> > > > "powerpc: Hardware breakpoints rewrite to handle non DABR breakpoint
> > > > registers",
> > > > compiling linux fails with :
> > > >
> > > > cc1: warnings being treated as errors
> > > > arch/powerpc/kernel/ptrace.c: In function 'arch_ptrace':
> > > > arch/powerpc/kernel/ptrace.c:1450: warning: 'brk.len' is used
> > > > uninitialized in this function
> > > > arch/powerpc/kernel/ptrace.c:1352: note: 'brk.len' was declared here
> > > >
> > > > could you look at that ?
> > >
> > > Sure.
> >
> > I use gcc-4.2.2, and my .config follows.
>
> I'm a bit lost.
>
> I don't have 4.2.2 (which is ancient BTW) and I can't hit this on
> 4.3,4.5 or 4.6 with your config. It compiles fine.
>
> Also:
>
> > arch/powerpc/kernel/ptrace.c:1450: warning: 'brk.len' is used
> > uninitialized in this function
> > arch/powerpc/kernel/ptrace.c:1352: note: 'brk.len' was declared here
>
> These line numbers make no sense at all WRT v3.9-rc1. brk.len is neither
> declared or used in those lines:
those were the line numbers just after your commit
In 3.9-rc1 they are :
cc1: warnings being treated as errors
arch/powerpc/kernel/ptrace.c: In function 'arch_ptrace':
arch/powerpc/kernel/ptrace.c:1479: warning: 'brk.len' is used uninitialized in
this function
arch/powerpc/kernel/ptrace.c:1381: note: 'brk.len' was declared here
if (child->thread.hw_brk.address)
return -ENOSPC;
1479: child->thread.hw_brk = brk;
return 1;
#endif /* !CONFIG_PPC_ADV_DEBUG_DVCS */
Philippe
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