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Constrain launch ~ operator to defined bits. 

llvm-svn: 185452
This commit is contained in:
Howard Hinnant 2013-07-02 18:01:41 +00:00
parent ca69356d52
commit 3fc9ef22b3
2 changed files with 2 additions and 2 deletions
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2
libcxx/include/future
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@ -443,7 +443,7 @@ _LIBCPP_CONSTEXPR
launch
operator~(launch __x)
{
return static_cast<launch>(~static_cast<__launch_underlying_type>(__x));
return static_cast<launch>(~static_cast<__launch_underlying_type>(__x) & 3);
}
inline _LIBCPP_INLINE_VISIBILITY

2
libcxx/test/thread/futures/futures.overview/launch.pass.cpp
View File

@ -28,7 +28,7 @@ int main()
static_assert(std::launch::any == (std::launch::async | std::launch::deferred), "");
static_assert(std::launch(0) == (std::launch::async & std::launch::deferred), "");
static_assert(std::launch::any == (std::launch::async ^ std::launch::deferred), "");
static_assert(std::launch(~1) == ~std::launch::async, "");
static_assert(std::launch::deferred == ~std::launch::async, "");
std::launch x = std::launch::async;
x &= std::launch::deferred;
assert(x == std::launch(0));