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Re: [Xen-devel] [PATCH v11 1/9] xen: use __UINTPTR_TYPE__ for uintptr_t
- To: Stefano Stabellini <sstabellini@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Fri, 8 Mar 2019 14:18:22 +0000
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- Cc: Stefano Stabellini <stefanos@xxxxxxxxxx>, wei.liu2@xxxxxxxxxx, konrad.wilk@xxxxxxxxxx, George.Dunlap@xxxxxxxxxxxxx, tim@xxxxxxx, ian.jackson@xxxxxxxxxxxxx, George.Dunlap@xxxxxxxxxx, julien.grall@xxxxxxx, JBeulich@xxxxxxxx, ian.jackson@xxxxxxxxxx
- Delivery-date: Fri, 08 Mar 2019 14:19:13 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Openpgp: preference=signencrypt
On 05/03/2019 22:38, Stefano Stabellini wrote:
> Use __UINTPTR_TYPE__ to define uintptr_t. A later patch will make use of
> __PTRDIFF_TYPE__ to define ptrdiff_t.
>
> Signed-off-by: Stefano Stabellini <stefanos@xxxxxxxxxx>
> Reviewed-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
> CC: jbeulich@xxxxxxxx
> CC: andrew.cooper3@xxxxxxxxxx
> CC: julien.grall@xxxxxxx
> CC: George.Dunlap@xxxxxxxxxxxxx
> CC: ian.jackson@xxxxxxxxxxxxx
> CC: konrad.wilk@xxxxxxxxxx
> CC: tim@xxxxxxx
> CC: wei.liu2@xxxxxxxxxx
> ---
> Changes in v11:
> - split patch
> ---
> xen/include/xen/types.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/xen/include/xen/types.h b/xen/include/xen/types.h
> index 03f0fe6..1059fab 100644
> --- a/xen/include/xen/types.h
> +++ b/xen/include/xen/types.h
> @@ -52,7 +52,7 @@ typedef __u32 __be32;
> typedef __u64 __le64;
> typedef __u64 __be64;
>
> -typedef unsigned int __attribute__((__mode__(__pointer__))) uintptr_t;
> +typedef __UINTPTR_TYPE__ uintptr_t;
I've already raised an objected to this once, so I'm going to be very
blunt and crystal clear.
NACK.
Stop messing around with GCC-isms and use the spec-compliant way of
getting uintptr_t (and others).
#include <stdint.h>
That way, *any* compiler will give you a working uintptr_t, not just
those which are emulating GCC's internals.
This isn't rocket science, and I know all of us have better things to be
doing that wasting time arguing over aspects which are unrelated to
actually fixing the problem.
~Andrew
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