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 // UNSUPPORTED: libcpp-no-exceptions 11 // <string> 12 13 // size_type max_size() const; 14 15 // NOTE: asan and msan will fail for one of two reasons 16 // 1. If allocator_may_return_null=0 then they will fail because the allocation 17 // returns null. 18 // 2. If allocator_may_return_null=1 then they will fail because the allocation 19 // is too large to succeed. 20 // UNSUPPORTED: sanitizer-new-delete 21 22 #include <string> 23 #include <cassert> 24 25 #include "min_allocator.h" 26 27 template <class S> 28 void 29 test1(const S& s) 30 { 31 S s2(s); 32 const size_t sz = s2.max_size() - 1; 33 try { s2.resize(sz, 'x'); } 34 catch ( const std::bad_alloc & ) { return ; } 35 assert ( s2.size() == sz ); 36 } 37 38 template <class S> 39 void 40 test2(const S& s) 41 { 42 S s2(s); 43 const size_t sz = s2.max_size(); 44 try { s2.resize(sz, 'x'); } 45 catch ( const std::bad_alloc & ) { return ; } 46 assert ( s.size() == sz ); 47 } 48 49 template <class S> 50 void 51 test(const S& s) 52 { 53 assert(s.max_size() >= s.size()); 54 test1(s); 55 test2(s); 56 } 57 58 int main() 59 { 60 { 61 typedef std::string S; 62 test(S()); 63 test(S("123")); 64 test(S("12345678901234567890123456789012345678901234567890")); 65 } 66 #if TEST_STD_VER >= 11 67 { 68 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; 69 test(S()); 70 test(S("123")); 71 test(S("12345678901234567890123456789012345678901234567890")); 72 } 73 #endif 74 } 75
