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-rw-r--r--libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/seed_sseq.pass.cpp50
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diff --git a/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/seed_sseq.pass.cpp b/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/seed_sseq.pass.cpp
new file mode 100644
index 00000000000..33292a041af
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+++ b/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/seed_sseq.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, size_t w, size_t n, size_t m, size_t r,
+// UIntType a, size_t u, UIntType d, size_t s,
+// UIntType b, size_t t, UIntType c, size_t l, UIntType f>
+// class mersenne_twister_engine;
+
+// template<class Sseq> void seed(Sseq& q);
+
+#include <random>
+#include <cassert>
+
+void
+test1()
+{
+ unsigned a[] = {3, 5, 7};
+ std::seed_seq sseq(a, a+3);
+ std::mt19937 e1;
+ std::mt19937 e2(sseq);
+ assert(e1 != e2);
+ e1.seed(sseq);
+ assert(e1 == e2);
+}
+
+void
+test2()
+{
+ unsigned a[] = {3, 5, 7};
+ std::seed_seq sseq(a, a+3);
+ std::mt19937_64 e1;
+ std::mt19937_64 e2(sseq);
+ assert(e1 != e2);
+ e1.seed(sseq);
+ assert(e1 == e2);
+}
+
+int main()
+{
+ test1();
+ test2();
+}
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