[llvm] [libc][bazel] Add CPP tests (PR #65941)

[Guillaume Chatelet via llvm-commits]

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@@ -0,0 +1,112 @@
+# This file is licensed under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+# Tests for LLVM libc CPP functions.
+
+package(default_visibility = ["//visibility:public"])
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gchatelet wrote:

I've cargo culted it from the other tests `utils/bazel/llvm-project-overlay/libc/test/src/**/BUILD.bazel`.
I *think* this is because of our internal massaging script that tags everything as public on the "internal -> upstream" path. It's probably fixable but I don't want to bother for now :)

https://github.com/llvm/llvm-project/pull/65941