1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <string> 11 12 // const charT& front() const; 13 // charT& front(); 14 15 #include <string> 16 #include <cassert> 17 18 template <class S> 19 void 20 test(S s) 21 { 22 const S& cs = s; 23 assert(&cs.front() == &cs[0]); 24 assert(&s.front() == &s[0]); 25 s.front() = typename S::value_type('z'); 26 assert(s.front() == typename S::value_type('z')); 27 } 28 29 int main() 30 { 31 typedef std::string S; 32 test(S("1")); 33 test(S("1234567890123456789012345678901234567890")); 34 } 35
