assert: add static_assert if using c11

core/include/assert.h

@@ -109,6 +109,20 @@ NORETURN void _assert_failure(const char *file, unsigned line);
 #define assert(cond) ((cond) ? (void)0 : core_panic(PANIC_ASSERT_FAIL, assert_crash_message))
 #endif
 
+#if !defined __cplusplus
+#if __STDC_VERSION__ >= 201112L
+/**
+ * @brief c11 static_assert() macro
+ */
+#define static_assert(...) _Static_assert(__VA_ARGS__)
+#else
+/**
+ * @brief static_assert dummy for c-version < c11
+ */
+#define static_assert(...) struct static_assert_dummy
+#endif
+#endif
+
 #ifdef __cplusplus
 }
 #endif