[clang] [clang] Improve constexpr-unknown diagnostics. (PR #146288)

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github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions cpp -- clang/lib/AST/ExprConstant.cpp clang/test/SemaCXX/constant-expression-cxx11.cpp clang/test/SemaCXX/constant-expression-p2280r4.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/AST/ExprConstant.cpp b/clang/lib/AST/ExprConstant.cpp
index f94536585..a59d0b9fa 100644
--- a/clang/lib/AST/ExprConstant.cpp
+++ b/clang/lib/AST/ExprConstant.cpp
@@ -4475,7 +4475,8 @@ static CompleteObject findCompleteObject(EvalInfo &Info, const Expr *E,
     // a null BaseVal. Any constexpr-unknown variable seen here is an error:
     // we can't access a constexpr-unknown object.
     if (!BaseVal) {
-      Info.FFDiag(E, diag::note_constexpr_access_unknown_variable, 1) << AK << VD;
+      Info.FFDiag(E, diag::note_constexpr_access_unknown_variable, 1)
+          << AK << VD;
       Info.Note(VD->getLocation(), diag::note_declared_at);
       return CompleteObject();
     }

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https://github.com/llvm/llvm-project/pull/146288