From a0ec6a58f552c0ea03f6ebfcbe2ebda57640978b Mon Sep 17 00:00:00 2001
From: Saleem Abdulrasool <compnerd@compnerd.org>
Date: Wed, 20 Apr 2016 20:54:55 +0000
Subject: [PATCH] unwind: remove a second instance of -Wexpansion-to-defined

Remove the use of undefined behaviour in the c preprocessor by always defining
the value according to the state that was being checked.  NFC.

llvm-svn: 266916
---
 libunwind/src/config.h | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/libunwind/src/config.h b/libunwind/src/config.h
index b14e591ba425..69f5cc1df0a9 100644
--- a/libunwind/src/config.h
+++ b/libunwind/src/config.h
@@ -86,11 +86,14 @@
   #endif
 #endif
 
-#define _LIBUNWIND_BUILD_ZERO_COST_APIS                                        \
-  (defined(__i386__) || defined(__x86_64__) ||                                 \
-   (!defined(__APPLE__) && defined(__arm__)) ||                                \
-   (defined(__arm64__) || defined(__aarch64__)) ||                             \
-   (defined(__APPLE__) && defined(__mips__)))
+#if defined(__i386__) || defined(__x86_64__) ||                                \
+    (!defined(__APPLE__) && defined(__arm__)) ||                               \
+    (defined(__arm64__) || defined(__aarch64__)) ||                            \
+    (defined(__APPLE__) && defined(__mips__))
+#define _LIBUNWIND_BUILD_ZERO_COST_APIS 1
+#else
+#define _LIBUNWIND_BUILD_ZERO_COST_APIS 0
+#endif
 
 // Macros that define away in non-Debug builds
 #ifdef NDEBUG