//===----------------------------------------------------------------------===// // // 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& back() const; // charT& back(); #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.back() == &cs[cs.size()-1]); assert(&s.back() == &s[cs.size()-1]); s.back() = typename S::value_type('z'); assert(s.back() == 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.back(); assert(false); } #endif }