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 // size_type max_size() const; 13 14 // NOTE: asan and msan will fail for one of two reasons 15 // 1. If allocator_may_return_null=0 then they will fail because the allocation 16 // returns null. 17 // 2. If allocator_may_return_null=1 then they will fail because the allocation 18 // is too large to succeed. 19 // UNSUPPORTED: asan, msan 20 21 #include <string> 22 #include <cassert> 23 24 #include "min_allocator.h" 25 26 template <class S> 27 void 28 test1(const S& s) 29 { 30 S s2(s); 31 const size_t sz = s2.max_size() - 1; 32 try { s2.resize(sz, 'x'); } 33 catch ( const std::bad_alloc & ) { return ; } 34 assert ( s2.size() == sz ); 35 } 36 37 template <class S> 38 void 39 test2(const S& s) 40 { 41 S s2(s); 42 const size_t sz = s2.max_size(); 43 try { s2.resize(sz, 'x'); } 44 catch ( const std::bad_alloc & ) { return ; } 45 assert ( s.size() == sz ); 46 } 47 48 template <class S> 49 void 50 test(const S& s) 51 { 52 assert(s.max_size() >= s.size()); 53 test1(s); 54 test2(s); 55 } 56 57 int main() 58 { 59 { 60 typedef std::string S; 61 test(S()); 62 test(S("123")); 63 test(S("12345678901234567890123456789012345678901234567890")); 64 } 65 #if __cplusplus >= 201103L 66 { 67 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; 68 test(S()); 69 test(S("123")); 70 test(S("12345678901234567890123456789012345678901234567890")); 71 } 72 #endif 73 } 74