r219745 - vadefs.h: be even more conservative and only define the macros if already defined

[Hans Wennborg]

Author: hans
Date: Tue Oct 14 18:20:25 2014
New Revision: 219745

URL: http://llvm.org/viewvc/llvm-project?rev=219745&view=rev
Log:
vadefs.h: be even more conservative and only define the macros if already defined

Modified:
    cfe/trunk/lib/Headers/vadefs.h

Modified: cfe/trunk/lib/Headers/vadefs.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Headers/vadefs.h?rev=219745&r1=219744&r2=219745&view=diff
==============================================================================
--- cfe/trunk/lib/Headers/vadefs.h (original)
+++ cfe/trunk/lib/Headers/vadefs.h Tue Oct 14 18:20:25 2014
@@ -34,17 +34,16 @@
 /* Override macros from vadefs.h with definitions that work with Clang. */
 #ifdef _crt_va_start
 #undef _crt_va_start
+#define _crt_va_start(ap, param) __builtin_va_start(ap, param)
 #endif
 #ifdef _crt_va_end
 #undef _crt_va_end
+#define _crt_va_end(ap)          __builtin_va_end(ap)
 #endif
 #ifdef _crt_va_arg
 #undef _crt_va_arg
-#endif
-
-#define _crt_va_start(ap, param) __builtin_va_start(ap, param)
-#define _crt_va_end(ap)          __builtin_va_end(ap)
 #define _crt_va_arg(ap, type)    __builtin_va_arg(ap, type)
+#endif
 
 #endif
 #endif