From e540b6a266a5998951bf42e1646e41d6993805db Mon Sep 17 00:00:00 2001
From: Hyxogen <8938732+Hyxogen@users.noreply.github.com>
Date: Tue, 13 Feb 2024 14:17:56 +0100
Subject: [PATCH] sema: don't emit warning for unprefixed attribute in C

---
 clang/lib/Sema/SemaDeclAttr.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clang/lib/Sema/SemaDeclAttr.cpp b/clang/lib/Sema/SemaDeclAttr.cpp
index 43d0a91ca9e2..8867fe430a92 100644
--- a/clang/lib/Sema/SemaDeclAttr.cpp
+++ b/clang/lib/Sema/SemaDeclAttr.cpp
@@ -8550,7 +8550,7 @@ static bool MustDelayAttributeArguments(const ParsedAttr &AL) {
 static void checkCheerpUnprefixedDeprecations(Sema &S,
                                               const ParsedAttr &Attr) {
   const IdentifierInfo *scope = Attr.getScopeName();
-  if (!scope || scope->getName() != "cheerp") {
+  if (Attr.isCXX11Attribute() && (!scope || scope->getName() != "cheerp")) {
     S.Diag(Attr.getLoc(), diag::warn_cheerp_deprecated_attribute)
         << Attr.getAttrName();
   }