diff options
Diffstat (limited to 'test/std/strings/basic.string/string.access/front.pass.cpp')
-rw-r--r-- | test/std/strings/basic.string/string.access/front.pass.cpp | 56 |
1 files changed, 56 insertions, 0 deletions
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 +} |