[clang] [Clang] use constant evaluation context for constexpr if conditions (PR #123667)

[Oleksandr T. via cfe-commits]

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@@ -0,0 +1,10 @@
+// RUN: %clang_cc1 -std=c++26 -verify %s
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a-tarasyuk wrote:

@frederick-vs-ja I've updated the test

https://github.com/llvm/llvm-project/pull/123667