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Make swap_noexcept.pass.cpp tests more portable. Patch from STL@microsoft.com.

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See D21820 for more information (https://reviews.llvm.org/D21820).



git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@276590 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier
2016-07-25 00:15:29 +00:00
parent ec1f15d9af
commit f4a698aa30
17 changed files with 148 additions and 255 deletions
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15
test/std/strings/basic.string/string.nonmembers/string.special/swap_noexcept.pass.cpp
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@@ -22,6 +22,7 @@
// This tests a conforming extension
#include <string>
#include <utility>
#include <cassert>
#include "test_macros.h"
@@ -56,30 +57,26 @@ int main()
{
{
typedef std::string C;
C c1, c2;
static_assert(noexcept(swap(c1, c2)), "");
static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
}
{
typedef std::basic_string<char, std::char_traits<char>, test_allocator<char>> C;
C c1, c2;
static_assert(noexcept(swap(c1, c2)), "");
LIBCPP_STATIC_ASSERT(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
}
{
typedef std::basic_string<char, std::char_traits<char>, some_alloc<char>> C;
C c1, c2;
#if TEST_STD_VER >= 14
// In c++14, if POCS is set, swapping the allocator is required not to throw
static_assert( noexcept(swap(c1, c2)), "");
static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
#else
static_assert(!noexcept(swap(c1, c2)), "");
static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
#endif
}
#if TEST_STD_VER >= 14
{
typedef std::basic_string<char, std::char_traits<char>, some_alloc2<char>> C;
C c1, c2;
// if the allocators are always equal, then the swap can be noexcept
static_assert( noexcept(swap(c1, c2)), "");
static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
}
#endif
}