#define XSTRINGIFY(x) #x
#define STRINGIFY(x) XSTRINGIFY(x)
+#define XCONCATENATE(x, y) x ## y
+#define CONCATENATE(x, y) XCONCATENATE(x, y)
+
+#define UNIQUE(prefix) CONCATENATE(prefix, __LINE__)
+
/* Rounds up */
#define ALIGN4(l) (((l) + 3) & ~3)
#if defined(static_assert)
#define assert_cc(expr) static_assert(expr, #expr)
#else
-#define assert___cc(expr, line) struct _assert_struct_ ## line { char x[(expr) ? 0 : -1]; }
-#define assert__cc(expr, line) assert___cc((expr), line)
-#define assert_cc(expr) assert__cc((expr), __LINE__)
+#define assert_cc(expr) struct UNIQUE(_assert_struct_) { char x[(expr) ? 0 : -1]; };
#endif
#define assert_return(expr, r) \