[libc++] Avoid including libc++ private header in std/ test (#79856)

ldionne · web-flow · commit c576ab6bc553 · 2024-01-29T14:19:34.000-05:00
Fixes #79783
diff --git a/libcxx/test/std/containers/sequences/array/size_and_alignment.compile.pass.cpp b/libcxx/test/std/containers/sequences/array/size_and_alignment.compile.pass.cpp
@@ -22,7 +22,10 @@
 #include <array>
 #include <cstddef>
 #include <type_traits>
-#include <__type_traits/datasizeof.h>
+
+#ifdef _LIBCPP_VERSION
+#  include <__type_traits/datasizeof.h>
+#endif
 
 #include "test_macros.h"
 
