diff --git a/llvm/include/llvm/ADT/StringRef.h b/llvm/include/llvm/ADT/StringRef.h
--- a/llvm/include/llvm/ADT/StringRef.h
+++ b/llvm/include/llvm/ADT/StringRef.h
@@ -857,7 +857,7 @@
   public:
     template <size_t N>
     constexpr StringLiteral(const char (&Str)[N])
-#if defined(__clang__) && __has_attribute(enable_if)
+#if !__INTELLISENSE__ && defined(__clang__) && __has_attribute(enable_if)
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wgcc-compat"
         __attribute((enable_if(__builtin_strlen(Str) == N - 1,