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 // void shrink_to_fit(); 13 14 #include <string> 15 #include <cassert> 16 17 #include "min_allocator.h" 18 19 template <class S> 20 void 21 test(S s) 22 { 23 typename S::size_type old_cap = s.capacity(); 24 S s0 = s; 25 s.shrink_to_fit(); 26 assert(s.__invariants()); 27 assert(s == s0); 28 assert(s.capacity() <= old_cap); 29 assert(s.capacity() >= s.size()); 30 } 31 32 int main() 33 { 34 { 35 typedef std::string S; 36 S s; 37 test(s); 38 39 s.assign(10, 'a'); 40 s.erase(5); 41 test(s); 42 43 s.assign(100, 'a'); 44 s.erase(50); 45 test(s); 46 } 47 #if __cplusplus >= 201103L 48 { 49 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; 50 S s; 51 test(s); 52 53 s.assign(10, 'a'); 54 s.erase(5); 55 test(s); 56 57 s.assign(100, 'a'); 58 s.erase(50); 59 test(s); 60 } 61 #endif 62 } 63
