xen/self-tests: address violations of MISRA rule 20.7

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>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Release-Acked-by: Oleksii Kurochko <oleksii.kurochko@gmail.com>

diff --git a/xen/include/xen/self-tests.h b/xen/include/xen/self-tests.h
index 42a4cc4d17fe7702948edf5cb400a4bfd2d546b9..58484fe5a8ae2ac93f6be3e93f94f59867814a66 100644 (file)
--- a/xen/include/xen/self-tests.h
+++ b/xen/include/xen/self-tests.h
@@ -19,11 +19,11 @@
 #if !defined(CONFIG_CC_IS_CLANG) || CONFIG_CLANG_VERSION >= 80000
 #define COMPILE_CHECK(fn, val, res)                                     \
     do {                                                                \
-        typeof(fn(val)) real = fn(val);                                 \
+        typeof((fn)(val)) real = (fn)(val);                             \
                                                                         \
         if ( !__builtin_constant_p(real) )                              \
             asm ( ".error \"'" STR(fn(val)) "' not compile-time constant\"" ); \
-        else if ( real != res )                                         \
+        else if ( real != (res) )                                       \
             asm ( ".error \"Compile time check '" STR(fn(val) == res) "' failed\"" ); \
     } while ( 0 )
 #else
@@ -37,9 +37,9 @@
  */
 #define RUNTIME_CHECK(fn, val, res)                     \
     do {                                                \
-        typeof(fn(val)) real = fn(HIDE(val));           \
+        typeof((fn)(val)) real = (fn)(HIDE(val));       \
                                                         \
-        if ( real != res )                              \
+        if ( real != (res) )                            \
             panic("%s: %s(%s) expected %u, got %u\n",   \
                   __func__, #fn, #val, real, res);      \
     } while ( 0 )