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Update value of __cpp_lib_chrono feature-test macro

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* include/std/chrono (__cpp_lib_chrono): Update macro value to
	indicate support for P0505R0.
	* testsuite/20_util/duration/arithmetic/constexpr_c++17.cc: Check
	for updated macro.

From-SVN: r253959
This commit is contained in:
Jonathan Wakely 2017-10-20 22:05:11 +01:00 • committed by Jonathan Wakely
parent af8630301d
commit 233fa165ad
3 changed files with 14 additions and 2 deletions
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5
libstdc++-v3/ChangeLog
View file

@ -1,5 +1,10 @@
2017-10-20 Jonathan Wakely <jwakely@redhat.com>
* include/std/chrono (__cpp_lib_chrono): Update macro value to
indicate support for P0505R0.
* testsuite/20_util/duration/arithmetic/constexpr_c++17.cc: Check
for updated macro.
* include/c_global/cstddef: Define __cpp_lib_byte feature-test macro.
* testsuite/18_support/byte/requirements.cc: Check macro.

4
libstdc++-v3/include/std/chrono
View file

@ -214,8 +214,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
treat_as_floating_point<_Rep>::value;
#endif // C++17
#if __cplusplus > 201402L
# define __cpp_lib_chrono 201510
#if __cplusplus >= 201703L
# define __cpp_lib_chrono 201611
template<typename _ToDur, typename _Rep, typename _Period>
constexpr __enable_if_is_duration<_ToDur>

7
libstdc++-v3/testsuite/20_util/duration/arithmetic/constexpr_c++17.cc
View file

@ -20,6 +20,13 @@
#include <chrono>
#include <testsuite_common_types.h>
#ifndef __cpp_lib_chrono
# error "Feature-test macro for constexpr <chrono> missing"
#elif __cpp_lib_chrono != 201611
# error "Feature-test macro for constexpr <chrono> has wrong value"
#endif
constexpr auto test_operators()
{
std::chrono::nanoseconds d1 { 1 };