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[libcxx] [test] Avoid Clang's -Wunused-const-variable in is_constructible.pass.cpp.

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This happens when using Clang with MSVC's STL, so there are no actual uses of this variable.

Fixes D31966.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@300079 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Stephan T. Lavavej
2017-04-12 17:16:38 +00:00
parent a98a45148f
commit 00f804a0a5
1 changed files with 1 additions and 0 deletions
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test/std/utilities/meta/meta.unary/meta.unary.prop/is_constructible.pass.cpp
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@@ -251,6 +251,7 @@ int main()
LIBCPP_STATIC_ASSERT( LIBCPP_STATIC_ASSERT(
clang_disallows_valid_static_cast_bug != clang_disallows_valid_static_cast_bug !=
std::__libcpp_is_constructible<int&&, ExplicitTo<int&&>>::value, ""); std::__libcpp_is_constructible<int&&, ExplicitTo<int&&>>::value, "");
((void)clang_disallows_valid_static_cast_bug); // Prevent unused warning
#else #else
static_assert(clang_disallows_valid_static_cast_bug == false, ""); static_assert(clang_disallows_valid_static_cast_bug == false, "");
LIBCPP_STATIC_ASSERT(std::__libcpp_is_constructible<int&&, ExplicitTo<int&&>>::value, ""); LIBCPP_STATIC_ASSERT(std::__libcpp_is_constructible<int&&, ExplicitTo<int&&>>::value, "");