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Bug 16599 part 2: Make std::pair's constructors and comparison operators (and make_pair) constexpr.

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@186430 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2013-07-16 17:45:44 +00:00
parent 01a0e90783
commit 206f6cdc33
8 changed files with 135 additions and 30 deletions
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28
test/utilities/utility/pairs/pairs.pair/const_first_const_second.pass.cpp
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@@ -22,9 +22,20 @@ class A
public:
A(int data) : data_(data) {}
bool operator==(const A& a) {return data_ == a.data_;}
bool operator==(const A& a) const {return data_ == a.data_;}
};
#if _LIBCPP_STD_VER > 11
class AC
{
int data_;
public:
constexpr AC(int data) : data_(data) {}
constexpr bool operator==(const AC& a) const {return data_ == a.data_;}
};
#endif
int main()
{
{
@@ -39,4 +50,19 @@ int main()
assert(p.first == A(1));
assert(p.second == 2);
}
#if _LIBCPP_STD_VER > 11
{
typedef std::pair<float, short*> P;
constexpr P p(3.5f, 0);
static_assert(p.first == 3.5f, "");
static_assert(p.second == nullptr, "");
}
{
typedef std::pair<AC, int> P;
constexpr P p(1, 2);
static_assert(p.first == AC(1), "");
static_assert(p.second == 2, "");
}
#endif
}