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Diffstat (limited to 'libstdc++-v3/testsuite/21_strings/basic_string/element_access/char/2.cc')
-rw-r--r-- | libstdc++-v3/testsuite/21_strings/basic_string/element_access/char/2.cc | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/21_strings/basic_string/element_access/char/2.cc b/libstdc++-v3/testsuite/21_strings/basic_string/element_access/char/2.cc new file mode 100644 index 00000000000..fbfa0136b67 --- /dev/null +++ b/libstdc++-v3/testsuite/21_strings/basic_string/element_access/char/2.cc @@ -0,0 +1,115 @@ +// 1999-06-08 bkoz + +// Copyright (C) 1999, 2003 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 2, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// You should have received a copy of the GNU General Public License along +// with this library; see the file COPYING. If not, write to the Free +// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, +// USA. + +// 21.3 template class basic_string + +#include <string> +#include <stdexcept> +#include <testsuite_hooks.h> + +// Do a quick sanity check on known problems with element access and +// ref-counted strings. These should all pass, regardless of the +// underlying string implementation, of course. +bool test01(void) +{ + bool test = true; + typedef std::string::size_type csize_type; + typedef std::string::iterator siterator; + typedef std::string::reverse_iterator sriterator; + csize_type npos = std::string::npos; + csize_type csz01, csz02; + siterator it1; + sriterator rit1; + + std::string str01("montara beach, half moon bay"); + const std::string str02("ocean beach, san francisco"); + std::string str03; + + // 21.3 p 5 + + // References, pointers, and iterators referring to the elements of + // a basic_string may be invalidated by the following uses of that + // basic_string object: + + // ... + + // Susequent to any of the above uses except the forms of insert() + // and erase() which return iterators, the first call to non-const + // member functions operator[](), at(), begin(), rbegin(), end(), or + // rend() + + str03 = str01; + it1 = str01.begin(); + *it1 = 'x'; + VERIFY( str01[0] == 'x' ); + VERIFY( str03[0] == 'm' ); + + str03 = str01; + csz01 = str01.size(); + rit1 = str01.rbegin(); // NB: Pointing at one-past the end, so ... + *rit1 = 'z'; // ... but it's taken care of here + VERIFY( str01[csz01 - 1] == 'z' ); + VERIFY( str03[csz01 - 1] == 'y' ); + + str03 = str01; + csz01 = str01.size(); + std::string::reference r1 = str01.at(csz01 - 2); + VERIFY( str03 == str01 ); + r1 = 'd'; + VERIFY( str01[csz01 - 2] == 'd' ); + VERIFY( str03[csz01 - 2] == 'a' ); + + str03 = str01; + csz01 = str01.size(); + std::string::reference r2 = str01[csz01 - 3]; + VERIFY( str03 == str01 ); + r2 = 'w'; + VERIFY( str01[csz01 - 3] == 'w' ); + VERIFY( str03[csz01 - 3] == 'b' ); + + str03 = str01; + csz02 = str01.size(); + it1 = str01.end(); + VERIFY( str03 == str01 ); + --it1; + *it1 = 'q'; + VERIFY( str01[csz02 - 1] == 'q' ); + VERIFY( str03[csz02 - 1] == 'z' ); + + str03 = str01; + rit1 = str01.rend(); + VERIFY( str03 == str01 ); + --rit1; + *rit1 = 'p'; + VERIFY( str01[0] == 'p' ); + VERIFY( str03[0] == 'x' ); + + // need to also test for const begin/const end +#ifdef DEBUG_ASSERT + assert(test); +#endif + return test; +} + +int main() +{ + test01(); + return 0; +} |