Fix bug in random.

Test: ./run_test.py --bitness 32 Test: ./run_test.py --bitness 64 Test: ./run_test.py --bitness 64 --host Bug: https://bugs.chromium.org/p/chromium/issues/detail?id=994957 Bug: http://b/139690488 Change-Id: I71708114d7fc8ed90c30b4d32b01d3f3aef7600b (cherry picked from commit a1d1caa3d831030ce802ed335a9743180911d553)
2019-09-10 21:52:53 -07:00
parent 44a8861f2c
commit 819e8133bd
3 changed files with 103 additions and 21 deletions
--- a/test/std/numerics/rand/rand.dis/rand.dist.bern/rand.dist.bern.geo/eval.pass.cpp
+++ b/test/std/numerics/rand/rand.dis/rand.dist.bern/rand.dist.bern.geo/eval.pass.cpp
@@ -29,6 +29,20 @@ sqr(T x)
    return x * x;
 }

+struct Eng : std::mt19937 {
+  using Base = std::mt19937;
+  using Base::Base;
+};
+
+void test_small_inputs() {
+  Eng engine;
+  std::geometric_distribution<std::int16_t> distribution(5.45361e-311);
+  for (auto i=0; i < 1000; ++i) {
+		volatile auto res = distribution(engine);
+      ((void)res);
+  }
+}
+
 void
 test1()
 {
@@ -295,4 +309,5 @@ int main()
    test4();
    test5();
    test6();
+    test_small_inputs();
 }