From: Jonathan Wakely Date: Wed, 28 Nov 2018 16:53:35 +0000 (+0000) Subject: PR libstdc++/83511 add default argument to basic_string_view::substr X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0a1369fa9598019354484651f1a16dd8cf7d70c9;p=gcc.git PR libstdc++/83511 add default argument to basic_string_view::substr PR libstdc++/83511 * include/std/string_view (basic_string_view::substr): Add default argument to first parameter. * include/experimental/string_view (basic_string_view::substr): Likewise. * testsuite/21_strings/basic_string_view/operations/substr/char/ 83511.cc: New test. * testsuite/21_strings/basic_string_view/operations/substr/wchar_t/ 83511.cc: New test. * testsuite/experimental/string_view/operations/substr/char/83511.cc: New test. * testsuite/experimental/string_view/operations/substr/wchar_t/83511.cc: New test. From-SVN: r266568 --- diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog index dc989bc744f..6d781b5593b 100644 --- a/libstdc++-v3/ChangeLog +++ b/libstdc++-v3/ChangeLog @@ -1,3 +1,19 @@ +2018-11-28 Jonathan Wakely + + PR libstdc++/83511 + * include/std/string_view (basic_string_view::substr): Add default + argument to first parameter. + * include/experimental/string_view (basic_string_view::substr): + Likewise. + * testsuite/21_strings/basic_string_view/operations/substr/char/ + 83511.cc: New test. + * testsuite/21_strings/basic_string_view/operations/substr/wchar_t/ + 83511.cc: New test. + * testsuite/experimental/string_view/operations/substr/char/83511.cc: + New test. + * testsuite/experimental/string_view/operations/substr/wchar_t/83511.cc: + New test. + 2018-11-28 Edward Smith-Rowland <3dw4rd@verizon.net> Implement uniform container erasure for C++20. diff --git a/libstdc++-v3/include/experimental/string_view b/libstdc++-v3/include/experimental/string_view index b3bc1a9fb4f..b45463f89a3 100644 --- a/libstdc++-v3/include/experimental/string_view +++ b/libstdc++-v3/include/experimental/string_view @@ -273,7 +273,7 @@ inline namespace fundamentals_v1 // [string.view.ops], string operations: constexpr basic_string_view - substr(size_type __pos, size_type __n=npos) const + substr(size_type __pos = 0, size_type __n = npos) const { return __pos <= this->_M_len ? basic_string_view{this->_M_str + __pos, diff --git a/libstdc++-v3/include/std/string_view b/libstdc++-v3/include/std/string_view index dc2478d8d0e..b4d9cf56a9d 100644 --- a/libstdc++-v3/include/std/string_view +++ b/libstdc++-v3/include/std/string_view @@ -243,7 +243,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION } constexpr basic_string_view - substr(size_type __pos, size_type __n = npos) const noexcept(false) + substr(size_type __pos = 0, size_type __n = npos) const noexcept(false) { __pos = _M_check(__pos, "basic_string_view::substr"); const size_type __rlen = std::min(__n, _M_len - __pos); diff --git a/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/substr/char/83511.cc b/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/substr/char/83511.cc new file mode 100644 index 00000000000..60899130b83 --- /dev/null +++ b/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/substr/char/83511.cc @@ -0,0 +1,38 @@ +// { dg-options "-std=gnu++17" } +// { dg-do run { target c++17 } } + +// Copyright (C) 2018 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 3, 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 COPYING3. If not see +// . + +// basic_string_view::substr + +#include +#include + +void +test01() +{ + const std::string_view s = "abcdef"; + VERIFY( s.substr() == s ); + VERIFY( std::string_view{}.substr().empty() ); +} + +int +main() +{ + test01(); +} diff --git a/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/substr/wchar_t/83511.cc b/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/substr/wchar_t/83511.cc new file mode 100644 index 00000000000..478194d138f --- /dev/null +++ b/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/substr/wchar_t/83511.cc @@ -0,0 +1,38 @@ +// { dg-options "-std=gnu++17" } +// { dg-do run { target c++17 } } + +// Copyright (C) 2018 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 3, 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 COPYING3. If not see +// . + +// basic_string_view::substr + +#include +#include + +void +test01() +{ + const std::wstring_view s = L"abcdef"; + VERIFY( s.substr() == s ); + VERIFY( std::wstring_view{}.substr().empty() ); +} + +int +main() +{ + test01(); +} diff --git a/libstdc++-v3/testsuite/experimental/string_view/operations/substr/char/83511.cc b/libstdc++-v3/testsuite/experimental/string_view/operations/substr/char/83511.cc new file mode 100644 index 00000000000..84acc2cd8a2 --- /dev/null +++ b/libstdc++-v3/testsuite/experimental/string_view/operations/substr/char/83511.cc @@ -0,0 +1,37 @@ +// { dg-do run { target c++14 } } + +// Copyright (C) 2018 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 3, 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 COPYING3. If not see +// . + +// experimental::basic_string_view::substr + +#include +#include + +void +test01() +{ + const std::experimental::string_view s = "abcdef"; + VERIFY( s.substr() == s ); + VERIFY( std::experimental::string_view{}.substr().empty() ); +} + +int +main() +{ + test01(); +} diff --git a/libstdc++-v3/testsuite/experimental/string_view/operations/substr/wchar_t/83511.cc b/libstdc++-v3/testsuite/experimental/string_view/operations/substr/wchar_t/83511.cc new file mode 100644 index 00000000000..d52addf5ead --- /dev/null +++ b/libstdc++-v3/testsuite/experimental/string_view/operations/substr/wchar_t/83511.cc @@ -0,0 +1,37 @@ +// { dg-do run { target c++14 } } + +// Copyright (C) 2018 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 3, 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 COPYING3. If not see +// . + +// experimental::basic_string_view::substr + +#include +#include + +void +test01() +{ + const std::experimental::wstring_view s = L"abcdef"; + VERIFY( s.substr() == s ); + VERIFY( std::experimental::wstring_view{}.substr().empty() ); +} + +int +main() +{ + test01(); +}