[clang] [clang] Use internal linkage for c23 constexpr vars. (PR #97846)

[Dmitriy Chestnykh via cfe-commits]

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@@ -4428,10 +4428,14 @@ void Parser::ParseDeclarationSpecifiers(
 
     // constexpr, consteval, constinit specifiers
     case tok::kw_constexpr:
-      if (getLangOpts().C23)
+      if (getLangOpts().C23) {
         Diag(Tok, diag::warn_c23_compat_keyword) << Tok.getName();
-      isInvalid = DS.SetConstexprSpec(ConstexprSpecKind::Constexpr, Loc,
-                                      PrevSpec, DiagID);
+        isInvalid = DS.SetConstexprSpec(ConstexprSpecKind::Constexpr, Loc,
+                                        PrevSpec, DiagID);
+
+        isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_static, Loc,
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chestnykh wrote:

I need to rework this PR a little bit

https://github.com/llvm/llvm-project/pull/97846