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Need one more swap overload for swapping two lvalue vector<bool>::reference's.

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@178016 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Howard Hinnant
2013-03-26 13:48:57 +00:00
parent 782da33d1c
commit d9cdb2dcfd
2 changed files with 20 additions and 0 deletions
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10
include/__bit_reference
View File

@@ -81,6 +81,16 @@ class __bit_reference<_Cp, false>
{
};
template <class _Cp>
_LIBCPP_INLINE_VISIBILITY inline
void
swap(__bit_reference<_Cp> __x, __bit_reference<_Cp> __y) _NOEXCEPT
{
bool __t = __x;
__x = __y;
__y = __t;
}
template <class _Cp, class _Dp>
_LIBCPP_INLINE_VISIBILITY inline
void

10
test/containers/sequences/vector.bool/swap.pass.cpp
View File

@@ -51,4 +51,14 @@ int main()
assert(v1.get_allocator() == A(2));
assert(v2.get_allocator() == A(1));
}
{
std::vector<bool> v(2);
std::vector<bool>::reference r1 = v[0];
std::vector<bool>::reference r2 = v[1];
r1 = true;
using std::swap;
swap(r1, r2);
assert(v[0] == false);
assert(v[1] == true);
}
}