Merge pull request swiftlang#34143 from drodriguez/windows-xfail-msvc-2017-test

[windows] XFAIL crash-in-user-code test in MSVC 2017

Author: drodriguez

test/Frontend/crash-in-user-code.swift

@@ -8,6 +8,8 @@
 // UNSUPPORTED: OS=tvos
 // UNSUPPORTED: OS=watchos
 
+// XFAIL: MSVC_VER=15.0
+
 // CHECK: Stack dump:
 // CHECK-NEXT: Program arguments:
 // CHECK-NEXT: Swift version

test/lit.cfg

@@ -2018,8 +2018,6 @@ if copy_env is not None:
   for key in copy_env.split(':'):
     config.environment[key] = os.environ[key]
 
-lit_config.note("Available features: " + ", ".join(sorted(config.available_features)))
-
 # On macOS reflection information is read through the dyld APIs
 # On other platorms, this information is exported through extra
 # entry points in the Swift runtime that are only available in debug builds.
@@ -2040,3 +2038,9 @@ if kIsWindows:
   config.substitutions.append( ('%diff', 'diff --strip-trailing-cr') )
 else:
   config.substitutions.append( ('%diff', 'diff') )
+
+visual_studio_version = os.environ.get('VisualStudioVersion')
+if kIsWindows and visual_studio_version:
+  config.available_features.add('MSVC_VER=%s' % visual_studio_version)
+
+lit_config.note("Available features: " + ", ".join(sorted(config.available_features)))