1 files changed, 42 insertions, 0 deletions
diff --git a/libcxx/test/libcxx/utilities/template.bitset/assert.pass.cpp b/libcxx/test/libcxx/utilities/template.bitset/assert.pass.cpp
new file mode 100644
index 0000000..4019bdf
--- /dev/null
+++ b/libcxx/test/libcxx/utilities/template.bitset/assert.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <bitset>
+
+// Test hardening assertions for std::bitset.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: libcpp-hardening-mode=none
+// UNSUPPORTED: c++03
+// XFAIL: libcpp-hardening-mode=debug && availability-verbose_abort-missing
+
+#include <bitset>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+  { // Empty bitset
+    std::bitset<0> c;
+    const auto& const_c = c;
+    TEST_LIBCPP_ASSERT_FAILURE(c[0], "bitset::operator[] index out of bounds");
+    TEST_LIBCPP_ASSERT_FAILURE(const_c[0], "bitset::operator[] index out of bounds");
+    TEST_LIBCPP_ASSERT_FAILURE(c[42], "bitset::operator[] index out of bounds");
+    TEST_LIBCPP_ASSERT_FAILURE(const_c[42], "bitset::operator[] index out of bounds");
+  }
+
+  { // Non-empty bitset
+    std::bitset<4> c(42);
+    const auto& const_c = c;
+    (void)c[3]; // Check that there's no assertion on valid access.
+    TEST_LIBCPP_ASSERT_FAILURE(c[4], "bitset::operator[] index out of bounds");
+    (void)const_c[3]; // Check that there's no assertion on valid access.
+    TEST_LIBCPP_ASSERT_FAILURE(const_c[4], "bitset::operator[] index out of bounds");
+  }
+
+  return 0;
+}