From 0b357ed2abd95162787a4cfb16ba1dc3963a6ba2 Mon Sep 17 00:00:00 2001
From: Asiri Rathnayake <asiri.rathnayake@arm.com>
Date: Thu, 13 Oct 2016 18:40:57 +0000
Subject: [PATCH] [libcxxabi] Fix gcc build after r284128

NFC.

llvm-svn: 284141
---
 libcxxabi/src/config.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libcxxabi/src/config.h b/libcxxabi/src/config.h
index d30c49b57eaa..625ad1b41c64 100644
--- a/libcxxabi/src/config.h
+++ b/libcxxabi/src/config.h
@@ -16,6 +16,10 @@
 
 #include <unistd.h>
 
+#ifndef __has_attribute
+  #define __has_attribute(x) 0
+#endif
+
 // Configure inline visibility attributes
 #if defined(_WIN32)
  #if defined(_MSC_VER) && !defined(__clang__)