================
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, 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
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Ensure that strings which fit within the SSO size can be 
constant-initialized
----------------
shafik wrote:

I think I would also like to see some Sema tests as well, do we expect 
something like this to work: https://godbolt.org/z/x8EvdGfoq

Currently it does not for libstdc++ but does on MSVC.

```cpp
#include <string>

constexpr std::string f() {
    std::string s = "hello world";

    return s;
}

void g() {
    constexpr auto s = f();
}
```

https://github.com/llvm/llvm-project/pull/66576
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