Introduce preliminary support for NSString format-string checking.
Patch by Nikita Zhuk!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@52336 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index a86bc6b..64ab911 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -124,6 +124,7 @@
     id_sprintf,
     id_snprintf,
     id_asprintf,
+    id_NSLog,
     id_vsnprintf,
     id_vasprintf,
     id_vfprintf,