Small fix for STATIC_ASSERT.

src/checks.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 233 matching lines @@
 // This macro joins two tokens.  If one of the tokens is a macro the
 // helper call causes it to be resolved before joining.
 #define SEMI_STATIC_JOIN(a, b) SEMI_STATIC_JOIN_HELPER(a, b)
 #define SEMI_STATIC_JOIN_HELPER(a, b) a##b
 // Causes an error during compilation of the condition is not
 // statically known to be true.  It is formulated as a typedef so that
 // it can be used wherever a typedef can be used.  Beware that this
 // actually causes each use to introduce a new defined type with a
 // name depending on the source line.
 template <int> class StaticAssertionHelper { };
-#define STATIC_CHECK(test)                                                  \
-  typedef                                                                   \
-    StaticAssertionHelper<sizeof(StaticAssertion<static_cast<bool>(test)>)> \
+#define STATIC_CHECK(test)                                                    \
+  typedef                                                                     \
+    StaticAssertionHelper<sizeof(StaticAssertion<static_cast<bool>((test))>)> \
     SEMI_STATIC_JOIN(__StaticAssertTypedef__, __LINE__)
 
 
 namespace v8 { namespace internal {
 
 bool EnableSlowAsserts();
 
 } }  // namespace v8::internal
 
 // The ASSERT macro is equivalent to CHECK except that it only
@@ skipping 20 matching lines @@
 // Static asserts has no impact on runtime performance, so they can be
 // safely enabled in release mode. Moreover, the ((void) 0) expression
 // obeys different syntax rules than typedef's, e.g. it can't appear
 // inside class declaration, this leads to inconsistency between debug
 // and release compilation modes behavior.
 #define STATIC_ASSERT(test)  STATIC_CHECK(test)
 
 #define ASSERT_NOT_NULL(p)  ASSERT_NE(NULL, p)
 
 #endif  // V8_CHECKS_H_