1 files changed, 1 insertions, 1 deletions
diff --git a/include/clang/Basic/AllDiagnostics.h b/include/clang/Basic/AllDiagnostics.h
index 18a2b8a31871..fc861a1952a5 100644
--- a/include/clang/Basic/AllDiagnostics.h
+++ b/include/clang/Basic/AllDiagnostics.h
@@ -28,7 +28,7 @@
 namespace clang {
 template <size_t SizeOfStr, typename FieldType>
 class StringSizerHelper {
-  char FIELD_TOO_SMALL[SizeOfStr <= FieldType(~0U) ? 1 : -1];
+  static_assert(SizeOfStr <= FieldType(~0U), "Field too small!");
 public:
   enum { Size = SizeOfStr };
 };