From 61b9a7258a7693d7f3674a5a1daf7b036ff1d382 Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Sun, 6 Sep 2015 18:46:46 +0000
Subject: Import libc++ 3.7.0 release (r246257).

---
 .../basic.string/string.access/front.pass.cpp      | 56 ++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 test/std/strings/basic.string/string.access/front.pass.cpp

(limited to 'test/std/strings/basic.string/string.access/front.pass.cpp')

diff --git a/test/std/strings/basic.string/string.access/front.pass.cpp b/test/std/strings/basic.string/string.access/front.pass.cpp
new file mode 100644
index 000000000000..ed80916f16f0
--- /dev/null
+++ b/test/std/strings/basic.string/string.access/front.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// const charT& front() const;
+//       charT& front();
+
+#ifdef _LIBCPP_DEBUG
+#define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
+#endif
+
+#include <string>
+#include <cassert>
+
+#include "min_allocator.h"
+
+template <class S>
+void
+test(S s)
+{
+    const S& cs = s;
+    assert(&cs.front() == &cs[0]);
+    assert(&s.front() == &s[0]);
+    s.front() = typename S::value_type('z');
+    assert(s.front() == typename S::value_type('z'));
+}
+
+int main()
+{
+    {
+    typedef std::string S;
+    test(S("1"));
+    test(S("1234567890123456789012345678901234567890"));
+    }
+#if __cplusplus >= 201103L
+    {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S("1"));
+    test(S("1234567890123456789012345678901234567890"));
+    }
+#endif
+#ifdef _LIBCPP_DEBUG
+    {
+        std::string s;
+        char c = s.front();
+        assert(false);
+    }
+#endif
+}
-- 
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