Implement feature test macros using a script.linaro-local/ci/tcwg_kernel/llvm-master-aarch64-next-allyesconfig

Summary:
This patch implements all the feature test macros libc++ currently supports, as specified by the standard or cppreference prior to C++2a.

The tests and `<version>` header are generated using a script. The script contains a table of each feature test macro, the headers it should be accessible from, and its values of each dialect of C++.
When a new feature test macro is added or needed, the table should be updated and the script re-run.



Reviewers: mclow.lists, jfb, serge-sans-paille

Reviewed By: mclow.lists

Subscribers: arphaman, jfb, ldionne, libcxx-commits

Differential Revision: https://reviews.llvm.org/D56750

1 files changed, 65 insertions, 19 deletions

diff --git a/libcxx/test/std/language.support/support.limits/support.limits.general/shared_mutex.version.pass.cpp b/libcxx/test/std/language.support/support.limits/support.limits.general/shared_mutex.version.pass.cpp
index 33387e89067..a86aebe7027 100644
--- a/libcxx/test/std/language.support/support.limits/support.limits.general/shared_mutex.version.pass.cpp
+++ b/libcxx/test/std/language.support/support.limits/support.limits.general/shared_mutex.version.pass.cpp
@@ -1,4 +1,3 @@
-
 //===----------------------------------------------------------------------===//
 //
 //                     The LLVM Compiler Infrastructure
@@ -8,29 +7,76 @@
 //
 //===----------------------------------------------------------------------===//
 //
-// <shared_mutex> feature macros
+// WARNING: This test was generated by generate_feature_test_macros_tests.py and
+// should not be edited manually.
 
-/*  Constant                                    Value
-    __cpp_lib_shared_mutex                      201505L
-    __cpp_lib_shared_timed_mutex                201402L
+// <shared_mutex>
 
-*/
+// Test the feature test macros defined by <shared_mutex>
 
-// UNSUPPORTED: libcpp-has-no-threads
+/*  Constant                        Value
+    __cpp_lib_shared_mutex          201505L [C++17]
+    __cpp_lib_shared_timed_mutex    201402L [C++14]
+*/
 
 #include <shared_mutex>
-#include <cassert>
 #include "test_macros.h"
 
-int main()
-{
-//  ensure that the macros that are supposed to be defined in <shared_mutex> 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_shared_mutex
+#   error "__cpp_lib_shared_mutex should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_shared_timed_mutex
+#   error "__cpp_lib_shared_timed_mutex should not be defined before c++14"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_shared_mutex
+#   error "__cpp_lib_shared_mutex should not be defined before c++17"
+# endif
+
+# ifndef __cpp_lib_shared_timed_mutex
+#   error "__cpp_lib_shared_timed_mutex should be defined in c++14"
+# endif
+# if __cpp_lib_shared_timed_mutex != 201402L
+#   error "__cpp_lib_shared_timed_mutex should have the value 201402L in c++14"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_shared_mutex
+#   error "__cpp_lib_shared_mutex should be defined in c++17"
+# endif
+# if __cpp_lib_shared_mutex != 201505L
+#   error "__cpp_lib_shared_mutex should have the value 201505L in c++17"
+# endif
+
+# ifndef __cpp_lib_shared_timed_mutex
+#   error "__cpp_lib_shared_timed_mutex should be defined in c++17"
+# endif
+# if __cpp_lib_shared_timed_mutex != 201402L
+#   error "__cpp_lib_shared_timed_mutex should have the value 201402L in c++17"
+# endif
+
+#elif TEST_STD_VER > 17
+
+# ifndef __cpp_lib_shared_mutex
+#   error "__cpp_lib_shared_mutex should be defined in c++2a"
+# endif
+# if __cpp_lib_shared_mutex != 201505L
+#   error "__cpp_lib_shared_mutex should have the value 201505L in c++2a"
+# endif
+
+# ifndef __cpp_lib_shared_timed_mutex
+#   error "__cpp_lib_shared_timed_mutex should be defined in c++2a"
+# endif
+# if __cpp_lib_shared_timed_mutex != 201402L
+#   error "__cpp_lib_shared_timed_mutex should have the value 201402L in c++2a"
+# endif
+
+#endif // TEST_STD_VER > 17
+
+int main() {}