1 files changed, 42 insertions, 16 deletions
diff --git a/libcxx/test/std/language.support/support.limits/support.limits.general/bit.version.pass.cpp b/libcxx/test/std/language.support/support.limits/support.limits.general/bit.version.pass.cpp
index 5dd7d049a5c..c3e6a56c604 100644
--- a/libcxx/test/std/language.support/support.limits/support.limits.general/bit.version.pass.cpp
+++ b/libcxx/test/std/language.support/support.limits/support.limits.general/bit.version.pass.cpp
@@ -1,4 +1,3 @@
-
 //===----------------------------------------------------------------------===//
 //
 //                     The LLVM Compiler Infrastructure
@@ -8,26 +7,53 @@
 //
 //===----------------------------------------------------------------------===//
 //
-// <bit> feature macros
+// WARNING: This test was generated by generate_feature_test_macros_tests.py and
+// should not be edited manually.
+
+// <bit>
 
-/*  Constant                                    Value
-    __cpp_lib_bit_cast                          201806L
+// Test the feature test macros defined by <bit>
 
+/*  Constant              Value
+    __cpp_lib_bit_cast    201806L [C++2a]
 */
 
 #include <bit>
-#include <cassert>
 #include "test_macros.h"
 
-int main()
-{
-//  ensure that the macros that are supposed to be defined in <bit> are defined.
+#if TEST_STD_VER < 14
 
-/*
-#if !defined(__cpp_lib_fooby)
-# error "__cpp_lib_fooby is not defined"
-#elif __cpp_lib_fooby < 201606L
-# error "__cpp_lib_fooby has an invalid value"
-#endif
-*/
-}
+# ifdef __cpp_lib_bit_cast
+#   error "__cpp_lib_bit_cast should not be defined before c++2a"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_bit_cast
+#   error "__cpp_lib_bit_cast should not be defined before c++2a"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_bit_cast
+#   error "__cpp_lib_bit_cast should not be defined before c++2a"
+# endif
+
+#elif TEST_STD_VER > 17
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_bit_cast
+#     error "__cpp_lib_bit_cast should be defined in c++2a"
+#   endif
+#   if __cpp_lib_bit_cast != 201806L
+#     error "__cpp_lib_bit_cast should have the value 201806L in c++2a"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_bit_cast
+#     error "__cpp_lib_bit_cast should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 17
+
+int main() {}