================
@@ -7337,6 +7337,27 @@ static void handleDeclspecThreadAttr(Sema &S, Decl *D,
const ParsedAttr &AL) {
D->addAttr(::new (S.Context) ThreadAttr(S.Context, AL));
}
+static void handleMSConstexprAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
+ if (!S.getLangOpts().isCompatibleWithMSVC(LangOptions::MSVC2022_3)) {
+ S.Diag(AL.getLoc(), diag::warn_unknown_attribute_ignored)
+ << AL << AL.getRange();
+ return;
+ }
+ auto *FD = cast<FunctionDecl>(D);
+ if (FD->isConstexprSpecified() || FD->isConsteval()) {
+ S.Diag(AL.getLoc(), diag::err_ms_constexpr_not_distinct)
+ << FD->isConsteval() << FD;
+ return;
+ }
+ if (auto *MD = dyn_cast<CXXMethodDecl>(FD)) {
----------------
erichkeane wrote:
Is this bit documented? We allow virtual functions, but only in C++20 or newer
mode? Is there reason for that?
https://github.com/llvm/llvm-project/pull/71300
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