check-clang: Introduce the feature "non-ms-sdk" to suppress Driver/nostdincxx.cpp on msvc.

llvm-svn: 201484

clang/test/Driver/nostdincxx.cpp

@@ -1,4 +1,6 @@
 // RUN: not %clangxx -nostdinc++ %s 2>&1 | FileCheck %s
-// XFAIL: win32
 // CHECK: file not found
 #include <vector> 
+
+// MSVC has C++ headers in same directory as C headers.
+// REQUIRES: non-ms-sdk

clang/test/lit.cfg

@@ -340,6 +340,10 @@ if os.path.exists("/dev/fd/0") and sys.platform not in ['cygwin']:
 if not re.match(r'.*-win32$', config.target_triple):
     config.available_features.add('dw2')
 
+# Not set on native MS environment.
+if not re.match(r'.*-win32$', config.target_triple):
+    config.available_features.add('non-ms-sdk')
+
 # [PR8833] LLP64-incompatible tests
 if not re.match(r'^x86_64.*-(win32|mingw32)$', config.target_triple):
     config.available_features.add('LP64')