[clang] [Clang] Improve support for expression messages in `static_assert` (PR #73234)

[Vlad Serebrennikov via cfe-commits]

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@@ -0,0 +1,30 @@
+// RUN: %clang_cc1 -std=c++2c -verify %s
+
+namespace dr2798 { // dr2798: 17 drafting
+#if __cpp_static_assert >= 202306
+struct string {
+    constexpr string() {
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Endilll wrote:

Is there a reason not to format this test with clang-format?

https://github.com/llvm/llvm-project/pull/73234