Fix check

Author: jhuber6

libcxx/test/support/count_new.h

@@ -455,12 +455,21 @@ void operator delete[](void* p, std::nothrow_t const&) TEST_NOEXCEPT {
 #      define USE_ALIGNED_ALLOC
 #    endif
 
+#    if defined(__APPLE__)
+#      if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) &&                                                   \
+           __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101500)
+#        define TEST_HAS_NO_C11_ALIGNED_ALLOC
+#      endif
+#    elif defined(__ANDROID__) && __ANDROID_API__ < 28
+#      define TEST_HAS_NO_C11_ALIGNED_ALLOC
+#    endif
+
 inline void* allocate_aligned_impl(std::size_t size, std::align_val_t align) {
   const std::size_t alignment = static_cast<std::size_t>(align);
   void* ret                   = nullptr;
 #    ifdef USE_ALIGNED_ALLOC
   ret = _aligned_malloc(size, alignment);
-#    elif TEST_STD_VER >= 17
+#    elif TEST_STD_VER >= 17 && !defined(TEST_HAS_NO_C11_ALIGNED_ALLOC)
   size_t rounded_size = (size + alignment - 1) & ~(alignment - 1);
   ret                 = aligned_alloc(alignment, size > rounded_size ? size : rounded_size);
 #    else