vendor/libc++/libc++-trunk-r300422

1 files changed, 8 insertions, 0 deletions

diff --git a/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.pass.cpp b/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.pass.cpp
index af065b84d1bb1..961b515ef8d88 100644
--- a/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.pass.cpp
+++ b/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.pass.cpp
@@ -8,6 +8,7 @@
 //===----------------------------------------------------------------------===//
 //
 // UNSUPPORTED: c++98, c++03, c++11, c++14
+
 // <numeric>
 
 // template<class _M, class _N>
@@ -129,4 +130,11 @@ int main()
     assert((do_test<long, int>(non_cce)));
     assert((do_test<int, long long>(non_cce)));
     assert((do_test<long long, int>(non_cce)));
+
+//  LWG#2837
+    {
+        auto res = std::gcd((int64_t)1234, (int32_t)-2147483648);
+        static_assert( std::is_same<decltype(res), std::common_type<int64_t, int32_t>::type>::value, "");
+        assert(res == 2);
+    }
 }