Change err_undef_protocolref to warn_undef_protocolref (this is consistent with GCC).



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@44840 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Sema/SemaDecl.cpp b/Sema/SemaDecl.cpp
index c77496f..0e3e728 100644
--- a/Sema/SemaDecl.cpp
+++ b/Sema/SemaDecl.cpp
@@ -1202,7 +1202,7 @@
     for (unsigned int i = 0; i != NumProtocols; i++) {
       ObjcProtocolDecl* RefPDecl = ObjcProtocols[ProtocolNames[i]];
       if (!RefPDecl || RefPDecl->isForwardDecl())
-        Diag(ClassLoc, diag::err_undef_protocolref,
+        Diag(ClassLoc, diag::warn_undef_protocolref,
              ProtocolNames[i]->getName(),
              ClassName->getName());
       IDecl->setIntfRefProtocols((int)i, RefPDecl);
@@ -1283,7 +1283,7 @@
     for (unsigned int i = 0; i != NumProtoRefs; i++) {
       ObjcProtocolDecl* RefPDecl = ObjcProtocols[ProtoRefNames[i]];
       if (!RefPDecl || RefPDecl->isForwardDecl())
-        Diag(ProtocolLoc, diag::err_undef_protocolref,
+        Diag(ProtocolLoc, diag::warn_undef_protocolref,
              ProtoRefNames[i]->getName(),
              ProtocolName->getName());
       PDecl->setReferencedProtocols((int)i, RefPDecl);
@@ -1366,7 +1366,7 @@
     for (unsigned int i = 0; i != NumProtoRefs; i++) {
       ObjcProtocolDecl* RefPDecl = ObjcProtocols[ProtoRefNames[i]];
       if (!RefPDecl || RefPDecl->isForwardDecl()) {
-        Diag(CategoryLoc, diag::err_undef_protocolref,
+        Diag(CategoryLoc, diag::warn_undef_protocolref,
              ProtoRefNames[i]->getName(),
              CategoryName->getName());
       }