address PR6502 by downgrading the scope checker's address
of label error to a warning controllable with a -W flag.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97815 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Basic/DiagnosticSemaKinds.td b/include/clang/Basic/DiagnosticSemaKinds.td
index 9f77655..01317de 100644
--- a/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/include/clang/Basic/DiagnosticSemaKinds.td
@@ -1589,9 +1589,9 @@
   "illegal switch case into protected scope">;
 def err_indirect_goto_in_protected_scope : Error<
   "illegal indirect goto in protected scope, unknown effect on scopes">;
-def err_addr_of_label_in_protected_scope : Error<
+def err_addr_of_label_in_protected_scope : Warning<
   "address taken of label in protected scope, jump to it would have "
-  "unknown effect on scope">;
+  "unknown effect on scope">, InGroup<DiagGroup<"label-address-scope">>;
 def note_protected_by_variable_init : Note<
   "jump bypasses variable initialization">;
 def note_protected_by_vla_typedef : Note<
diff --git a/test/Sema/scope-check.c b/test/Sema/scope-check.c
index 7d293f2..1df0186 100644
--- a/test/Sema/scope-check.c
+++ b/test/Sema/scope-check.c
@@ -146,7 +146,7 @@
   
   void *Ptrs[] = {
     &&L2,   // Ok.
-    &&L3   // expected-error {{address taken of label in protected scope, jump to it would have unknown effect on scope}}
+    &&L3   // expected-warning {{address taken of label in protected scope, jump to it would have unknown effect on scope}}
   };
 }