Add support for differentiating between attributes ignored when handled and

unknown attributes that we discard. Add a diagnostic group for unknown
attribute warnings to allow turning these off when we don't care. Also
consolidates the tests for this case.

llvm-svn: 107864

1 files changed, 2 insertions, 1 deletions

diff --git a/clang/lib/Sema/SemaDeclAttr.cpp b/clang/lib/Sema/SemaDeclAttr.cpp
index b7e275a9d4b..3b82f58be43 100644
--- a/clang/lib/Sema/SemaDeclAttr.cpp
+++ b/clang/lib/Sema/SemaDeclAttr.cpp
@@ -2069,7 +2069,8 @@ static void ProcessDeclAttribute(Scope *scope, Decl *D,
     // Ask target about the attribute.
     const TargetAttributesSema &TargetAttrs = S.getTargetAttributesSema();
     if (!TargetAttrs.ProcessDeclAttribute(scope, D, Attr, S))
-      S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName();
+      S.Diag(Attr.getLoc(), diag::warn_unknown_attribute_ignored)
+        << Attr.getName();
     break;
   }
 }