Implement static assert

include/assert.h

@@ -40,4 +40,9 @@ extern FOUNDATION_LIBC_NORETURN void foundation_libc_assert(char const * asserti
 #error "bad definition of FOUNDATION_LIBC_ASSERT_DEFAULT!"
 #endif
 
+#if !defined(__cplusplus)
+#undef static_assert
+#define static_assert FOUNDATION_LIBC_STATIC_ASSERT
+#endif
+
 #endif

include/foundation/builtins.h

@@ -12,6 +12,8 @@
 #define FOUNDATION_LIBC_ASSERT FOUNDATION_LIBC_ASSERT_DEFAULT
 #endif
 
+#define FOUNDATION_LIBC_STATIC_ASSERT _Static_assert
+
 #if defined(__clang__)
 
 #define FOUNDATION_LIBC_NORETURN __attribute__((__noreturn__))

test/src/assert-validator.c

@@ -23,3 +23,7 @@ void assert_ok(void) {
 void assert_bad(void) {
     assert(0);
 }
+
+void assert_static(void) {
+    static_assert(sizeof(int) == sizeof(int), "int size check");
+}