diff mbox series

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

Message ID 2dbc4b40261b91de2148e467ce0fdade5cc89c50.1718117557.git.nicola.vetrini@bugseng.com (mailing list archive)
State Superseded
Headers show
Series address several violations of MISRA Rule 20.7 | expand

Commit Message

Nicola Vetrini June 11, 2024, 3:53 p.m. UTC
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(-)

Comments

Jan Beulich June 12, 2024, 9:13 a.m. UTC | #1
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>
diff mbox series

Patch

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,