From a04026232ea2b65e9adb7bdd608f461b5fff41b3 Mon Sep 17 00:00:00 2001
From: Kuba Mracek <mracek@apple.com>
Date: Fri, 21 Apr 2017 22:58:55 +0000
Subject: [PATCH] Fixup for r301054: Only use
 __attribute__((no_sanitize("memory"))) when it's available.

llvm-svn: 301058
---
 llvm/lib/Fuzzer/FuzzerDefs.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/Fuzzer/FuzzerDefs.h b/llvm/lib/Fuzzer/FuzzerDefs.h
index 939b92f..27f5719 100644
--- a/llvm/lib/Fuzzer/FuzzerDefs.h
+++ b/llvm/lib/Fuzzer/FuzzerDefs.h
@@ -54,7 +54,11 @@
 
 
 #ifdef __clang__  // avoid gcc warning.
-#  define ATTRIBUTE_NO_SANITIZE_MEMORY __attribute__((no_sanitize("memory")))
+#  if __has_attribute(no_sanitize)
+#    define ATTRIBUTE_NO_SANITIZE_MEMORY __attribute__((no_sanitize("memory")))
+#  else
+#    define ATTRIBUTE_NO_SANITIZE_MEMORY
+#  endif
 #  define ALWAYS_INLINE __attribute__((always_inline))
 #else
 #  define ATTRIBUTE_NO_SANITIZE_MEMORY
-- 
2.7.4