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Fix PR#32605: common_type<T> is not SFINAE-friendly

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@299901 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2017-04-10 23:47:47 +00:00
parent c50c6b79c3
commit a43fe06888
2 changed files with 6 additions and 4 deletions
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6
test/std/utilities/meta/meta.trans/meta.trans.other/common_type.pass.cpp
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@@ -45,6 +45,8 @@ namespace std
template <> struct common_type< ::S<long>, long> {};
template <> struct common_type<long, ::S<long> > {};
template <> struct common_type<::X<float> > {};
template <> struct common_type<::X<double>, ::X<double> > {};
}
#if TEST_STD_VER >= 11
@@ -304,5 +306,7 @@ int main()
static_assert((std::is_same<std::common_type<const int, int>::type, int>::value), "");
static_assert((std::is_same<std::common_type<int, const int>::type, int>::value), "");
static_assert((std::is_same<std::common_type<const int, const int>::type, int>::value), "");
static_assert(no_common_type<X<float> >::value, "");
static_assert(no_common_type<X<double> >::value, "");
}