Revert "Extension: Mark the default constructor of chrono::duration as conditionally noexcept"; this breaks the gcc5 bot for C++11

This reverts commit c8ca15c95c4c0d6d1356500d5fe49a319ea4ca01.

llvm-svn: 372546

2 files changed, 1 insertions, 48 deletions

diff --git a/libcxx/include/chrono b/libcxx/include/chrono
index a3d1e1a1187..0e4cf9aef3a 100644
--- a/libcxx/include/chrono
+++ b/libcxx/include/chrono
@@ -1063,7 +1063,7 @@ public:
 
     _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
 #ifndef _LIBCPP_CXX03_LANG
-        duration() noexcept(noexcept(_Rep())) = default;
+        duration() = default;
 #else
         duration() {}
 #endif
diff --git a/libcxx/test/libcxx/utilities/time/date.time/duration.noexcept.pass.cpp b/libcxx/test/libcxx/utilities/time/date.time/duration.noexcept.pass.cpp
deleted file mode 100644
index b9d443fd97a..00000000000
--- a/libcxx/test/libcxx/utilities/time/date.time/duration.noexcept.pass.cpp
+++ /dev/null
@@ -1,47 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//  Libc++ adds noexcept to the default constructor to std::chrono::duration
-//    when the underlying type is noexcept default constructible. This makes all
-//    the standard durations noexcept default constructible.
-
-// typedef duration<long long,         nano> nanoseconds;
-// typedef duration<long long,        micro> microseconds;
-// typedef duration<long long,        milli> milliseconds;
-// typedef duration<long long              > seconds;
-// typedef duration<     long, ratio<  60> > minutes;
-// typedef duration<     long, ratio<3600> > hours;
-// 
-// #if _LIBCPP_STD_VER > 17
-// typedef duration<     int, ratio_multiply<ratio<24>, hours::period>>         days;
-// typedef duration<     int, ratio_multiply<ratio<7>,   days::period>>         weeks;
-// typedef duration<     int, ratio_multiply<ratio<146097, 400>, days::period>> years;
-// typedef duration<     int, ratio_divide<years::period, ratio<12>>>           months;
-// #endif
-
-#include <chrono>
-
-#include "test_macros.h"
-
-int main(int, char**) {
-
-    ASSERT_NOEXCEPT(std::chrono::nanoseconds());
-    ASSERT_NOEXCEPT(std::chrono::microseconds());
-    ASSERT_NOEXCEPT(std::chrono::milliseconds());
-    ASSERT_NOEXCEPT(std::chrono::seconds());
-    ASSERT_NOEXCEPT(std::chrono::minutes());
-    ASSERT_NOEXCEPT(std::chrono::hours());
-
-#if TEST_STD_VER > 17
-    ASSERT_NOEXCEPT(std::chrono::days());
-    ASSERT_NOEXCEPT(std::chrono::weeks());
-    ASSERT_NOEXCEPT(std::chrono::years());
-    ASSERT_NOEXCEPT(std::chrono::months());
-#endif
-
-    return 0;
-}