[XEN PATCH 3/6] xen/guest_access: address violations of MISRA rule 20.7

Nicola Vetrini posted 6 patches 5 months, 1 week ago
There is a newer version of this series
[XEN PATCH 3/6] xen/guest_access: address violations of MISRA rule 20.7
Posted by Nicola Vetrini 5 months, 1 week ago
MISRA C Rule 20.7 states: "Expressions resulting from the expansion
of macro parameters shall be enclosed in parentheses". Therefore, some
macro definitions should gain additional parentheses to ensure that all
current and future users will be safe with respect to expansions that
can possibly alter the semantics of the passed-in macro parameter.

No functional change.

Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
---
 xen/include/xen/guest_access.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/include/xen/guest_access.h b/xen/include/xen/guest_access.h
index af33ae3ab652..8bd2a124e823 100644
--- a/xen/include/xen/guest_access.h
+++ b/xen/include/xen/guest_access.h
@@ -49,9 +49,9 @@
     ((XEN_GUEST_HANDLE(type)) { &(hnd).p->fld })
 
 #define guest_handle_from_ptr(ptr, type)        \
-    ((XEN_GUEST_HANDLE_PARAM(type)) { (type *)ptr })
+    ((XEN_GUEST_HANDLE_PARAM(type)) { (type *)(ptr) })
 #define const_guest_handle_from_ptr(ptr, type)  \
-    ((XEN_GUEST_HANDLE_PARAM(const_##type)) { (const type *)ptr })
+    ((XEN_GUEST_HANDLE_PARAM(const_##type)) { (const type *)(ptr) })
 
 /*
  * Copy an array of objects to guest context via a guest handle,
-- 
2.34.1
Re: [XEN PATCH 3/6] xen/guest_access: address violations of MISRA rule 20.7
Posted by Jan Beulich 5 months, 1 week ago
On 11.06.2024 17:53, Nicola Vetrini wrote:
> MISRA C Rule 20.7 states: "Expressions resulting from the expansion
> of macro parameters shall be enclosed in parentheses". Therefore, some
> macro definitions should gain additional parentheses to ensure that all
> current and future users will be safe with respect to expansions that
> can possibly alter the semantics of the passed-in macro parameter.
> 
> No functional change.
> 
> Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>

Acked-by: Jan Beulich <jbeulich@suse.com>