diff --git a/test/std/language.support/support.types/byteops/and.assign.pass.cpp b/test/std/language.support/support.types/byteops/and.assign.pass.cpp
index 22bea5939..dec241eb0 100644
--- a/test/std/language.support/support.types/byteops/and.assign.pass.cpp
+++ b/test/std/language.support/support.types/byteops/and.assign.pass.cpp
@@ -12,8 +12,8 @@
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 // The following compilers don't like "std::byte b1{1}"
-// XFAIL: clang-3.5, clang-3.6, clang-3.7, clang-3.8
-// XFAIL: apple-clang-6, apple-clang-7, apple-clang-8.0
+// UNSUPPORTED: clang-3.5, clang-3.6, clang-3.7, clang-3.8
+// UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8.0
 
 // constexpr byte& operator &=(byte l, byte r) noexcept;
 
diff --git a/test/std/language.support/support.types/byteops/and.pass.cpp b/test/std/language.support/support.types/byteops/and.pass.cpp
index 36ec406e6..22da6e3e0 100644
--- a/test/std/language.support/support.types/byteops/and.pass.cpp
+++ b/test/std/language.support/support.types/byteops/and.pass.cpp
@@ -12,8 +12,8 @@
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 // The following compilers don't like "std::byte b1{1}"
-// XFAIL: clang-3.5, clang-3.6, clang-3.7, clang-3.8
-// XFAIL: apple-clang-6, apple-clang-7, apple-clang-8.0
+// UNSUPPORTED: clang-3.5, clang-3.6, clang-3.7, clang-3.8
+// UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8.0
 
 // constexpr byte operator&(byte l, byte r) noexcept;
 
diff --git a/test/std/language.support/support.types/byteops/lshift.assign.pass.cpp b/test/std/language.support/support.types/byteops/lshift.assign.pass.cpp
index f4658650f..f7e0dee9c 100644
--- a/test/std/language.support/support.types/byteops/lshift.assign.pass.cpp
+++ b/test/std/language.support/support.types/byteops/lshift.assign.pass.cpp
@@ -12,8 +12,8 @@
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 // The following compilers don't like "std::byte b1{1}"
-// XFAIL: clang-3.5, clang-3.6, clang-3.7, clang-3.8
-// XFAIL: apple-clang-6, apple-clang-7, apple-clang-8.0
+// UNSUPPORTED: clang-3.5, clang-3.6, clang-3.7, clang-3.8
+// UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8.0
 
 // template <class IntegerType>
 //   constexpr byte& operator<<=(byte& b, IntegerType shift) noexcept;
diff --git a/test/std/language.support/support.types/byteops/lshift.pass.cpp b/test/std/language.support/support.types/byteops/lshift.pass.cpp
index 595549341..b4a832519 100644
--- a/test/std/language.support/support.types/byteops/lshift.pass.cpp
+++ b/test/std/language.support/support.types/byteops/lshift.pass.cpp
@@ -12,8 +12,8 @@
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 // The following compilers don't like "std::byte b1{1}"
-// XFAIL: clang-3.5, clang-3.6, clang-3.7, clang-3.8
-// XFAIL: apple-clang-6, apple-clang-7, apple-clang-8.0
+// UNSUPPORTED: clang-3.5, clang-3.6, clang-3.7, clang-3.8
+// UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8.0
 
 // template <class IntegerType>
 //    constexpr byte operator <<(byte b, IntegerType shift) noexcept;
diff --git a/test/std/language.support/support.types/byteops/not.pass.cpp b/test/std/language.support/support.types/byteops/not.pass.cpp
index 1fcdc287f..734780f19 100644
--- a/test/std/language.support/support.types/byteops/not.pass.cpp
+++ b/test/std/language.support/support.types/byteops/not.pass.cpp
@@ -12,8 +12,8 @@
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 // The following compilers don't like "std::byte b1{1}"
-// XFAIL: clang-3.5, clang-3.6, clang-3.7, clang-3.8
-// XFAIL: apple-clang-6, apple-clang-7, apple-clang-8.0
+// UNSUPPORTED: clang-3.5, clang-3.6, clang-3.7, clang-3.8
+// UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8.0
 
 // constexpr byte operator~(byte b) noexcept;
 
diff --git a/test/std/language.support/support.types/byteops/or.assign.pass.cpp b/test/std/language.support/support.types/byteops/or.assign.pass.cpp
index a90ce48c5..75d6ab4d0 100644
--- a/test/std/language.support/support.types/byteops/or.assign.pass.cpp
+++ b/test/std/language.support/support.types/byteops/or.assign.pass.cpp
@@ -12,8 +12,8 @@
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 // The following compilers don't like "std::byte b1{1}"
-// XFAIL: clang-3.5, clang-3.6, clang-3.7, clang-3.8
-// XFAIL: apple-clang-6, apple-clang-7, apple-clang-8.0
+// UNSUPPORTED: clang-3.5, clang-3.6, clang-3.7, clang-3.8
+// UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8.0
 
 // constexpr byte& operator |=(byte l, byte r) noexcept;
 
diff --git a/test/std/language.support/support.types/byteops/or.pass.cpp b/test/std/language.support/support.types/byteops/or.pass.cpp
index ff1c19971..02c547f1d 100644
--- a/test/std/language.support/support.types/byteops/or.pass.cpp
+++ b/test/std/language.support/support.types/byteops/or.pass.cpp
@@ -12,8 +12,8 @@
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 // The following compilers don't like "std::byte b1{1}"
-// XFAIL: clang-3.5, clang-3.6, clang-3.7, clang-3.8
-// XFAIL: apple-clang-6, apple-clang-7, apple-clang-8.0
+// UNSUPPORTED: clang-3.5, clang-3.6, clang-3.7, clang-3.8
+// UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8.0
 
 // constexpr byte operator|(byte l, byte r) noexcept;
 
diff --git a/test/std/language.support/support.types/byteops/rshift.assign.pass.cpp b/test/std/language.support/support.types/byteops/rshift.assign.pass.cpp
index 33f7018af..5b970258f 100644
--- a/test/std/language.support/support.types/byteops/rshift.assign.pass.cpp
+++ b/test/std/language.support/support.types/byteops/rshift.assign.pass.cpp
@@ -12,8 +12,8 @@
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 // The following compilers don't like "std::byte b1{1}"
-// XFAIL: clang-3.5, clang-3.6, clang-3.7, clang-3.8
-// XFAIL: apple-clang-6, apple-clang-7, apple-clang-8.0
+// UNSUPPORTED: clang-3.5, clang-3.6, clang-3.7, clang-3.8
+// UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8.0
 
 // template <class IntegerType>
 //   constexpr byte& operator>>=(byte& b, IntegerType shift) noexcept;
diff --git a/test/std/language.support/support.types/byteops/rshift.pass.cpp b/test/std/language.support/support.types/byteops/rshift.pass.cpp
index c0a518a03..5ff986a70 100644
--- a/test/std/language.support/support.types/byteops/rshift.pass.cpp
+++ b/test/std/language.support/support.types/byteops/rshift.pass.cpp
@@ -12,8 +12,8 @@
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 // The following compilers don't like "std::byte b1{1}"
-// XFAIL: clang-3.5, clang-3.6, clang-3.7, clang-3.8
-// XFAIL: apple-clang-6, apple-clang-7, apple-clang-8.0
+// UNSUPPORTED: clang-3.5, clang-3.6, clang-3.7, clang-3.8
+// UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8.0
 
 // template <class IntegerType>
 //    constexpr byte operator <<(byte b, IntegerType shift) noexcept;
diff --git a/test/std/language.support/support.types/byteops/to_integer.pass.cpp b/test/std/language.support/support.types/byteops/to_integer.pass.cpp
index 79779d915..4aca0be82 100644
--- a/test/std/language.support/support.types/byteops/to_integer.pass.cpp
+++ b/test/std/language.support/support.types/byteops/to_integer.pass.cpp
@@ -12,8 +12,8 @@
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 // The following compilers don't like "std::byte b1{1}"
-// XFAIL: clang-3.5, clang-3.6, clang-3.7, clang-3.8
-// XFAIL: apple-clang-6, apple-clang-7, apple-clang-8.0
+// UNSUPPORTED: clang-3.5, clang-3.6, clang-3.7, clang-3.8
+// UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8.0
 
 // template <class IntegerType>
 //    constexpr IntegerType to_integer(byte b) noexcept;
diff --git a/test/std/language.support/support.types/byteops/xor.assign.pass.cpp b/test/std/language.support/support.types/byteops/xor.assign.pass.cpp
index 07e80a8b5..c9b40177a 100644
--- a/test/std/language.support/support.types/byteops/xor.assign.pass.cpp
+++ b/test/std/language.support/support.types/byteops/xor.assign.pass.cpp
@@ -12,8 +12,8 @@
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 // The following compilers don't like "std::byte b1{1}"
-// XFAIL: clang-3.5, clang-3.6, clang-3.7, clang-3.8
-// XFAIL: apple-clang-6, apple-clang-7, apple-clang-8.0
+// UNSUPPORTED: clang-3.5, clang-3.6, clang-3.7, clang-3.8
+// UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8.0
 
 // constexpr byte& operator ^=(byte l, byte r) noexcept;
 
diff --git a/test/std/language.support/support.types/byteops/xor.pass.cpp b/test/std/language.support/support.types/byteops/xor.pass.cpp
index 1c369fa79..3d0402b30 100644
--- a/test/std/language.support/support.types/byteops/xor.pass.cpp
+++ b/test/std/language.support/support.types/byteops/xor.pass.cpp
@@ -12,8 +12,8 @@
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 // The following compilers don't like "std::byte b1{1}"
-// XFAIL: clang-3.5, clang-3.6, clang-3.7, clang-3.8
-// XFAIL: apple-clang-6, apple-clang-7, apple-clang-8.0
+// UNSUPPORTED: clang-3.5, clang-3.6, clang-3.7, clang-3.8
+// UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8.0
 
 // constexpr byte operator^(byte l, byte r) noexcept;