[libcxx] [test] Rename _Up to U, etc. NFCI.

This improves readability and (theoretically) improves portability,
as _Ugly names are reserved.

This performs additional de-uglification, so all of these tests
follow the example of iterator.traits/empty.pass.cpp.

llvm-svn: 310761

1 files changed, 4 insertions, 4 deletions

diff --git a/libcxx/test/std/utilities/function.objects/comparisons/transparent.pass.cpp b/libcxx/test/std/utilities/function.objects/comparisons/transparent.pass.cpp
index 40b0f5e0752..ebae262b242 100644
--- a/libcxx/test/std/utilities/function.objects/comparisons/transparent.pass.cpp
+++ b/libcxx/test/std/utilities/function.objects/comparisons/transparent.pass.cpp
@@ -15,11 +15,11 @@ template <class T>
 struct is_transparent
 {
 private:
-    struct __two {char __lx; char __lxx;};
-    template <class _Up> static __two __test(...);
-    template <class _Up> static char __test(typename _Up::is_transparent* = 0);
+    struct two {char lx; char lxx;};
+    template <class U> static two test(...);
+    template <class U> static char test(typename U::is_transparent* = 0);
 public:
-    static const bool value = sizeof(__test<T>(0)) == 1;
+    static const bool value = sizeof(test<T>(0)) == 1;
 };