[libcxxabi] r228806 - unwind: clean up straggling -Wundef warning

[Saleem Abdulrasool]

Author: compnerd
Date: Tue Feb 10 23:20:44 2015
New Revision: 228806

URL: http://llvm.org/viewvc/llvm-project?rev=228806&view=rev
Log:
unwind: clean up straggling -Wundef warning

Conservatively define __ARM_ARCH to 4 in the case that it is undefined (e.g.
with GCC).

Modified:
    libcxxabi/trunk/src/Unwind/assembly.h

Modified: libcxxabi/trunk/src/Unwind/assembly.h
URL: http://llvm.org/viewvc/llvm-project/libcxxabi/trunk/src/Unwind/assembly.h?rev=228806&r1=228805&r2=228806&view=diff
==============================================================================
--- libcxxabi/trunk/src/Unwind/assembly.h (original)
+++ libcxxabi/trunk/src/Unwind/assembly.h Tue Feb 10 23:20:44 2015
@@ -62,6 +62,10 @@
   SYMBOL_NAME(name):
 
 #if defined(__arm__)
+#if !defined(__ARM_ARCH)
+#define __ARM_ARCH 4
+#endif
+
 #if defined(__ARM_ARCH_4T__) || __ARM_ARCH >= 5
 #define ARM_HAS_BX
 #endif