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* [gcc r11-4729] libstdc++: Fix default mode of new basic_stringstream constructor [PR 97719]
@ 2020-11-04 23:41 Jonathan Wakely
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From: Jonathan Wakely @ 2020-11-04 23:41 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:8f565d255a3157828e45f8b9844b3d156193c182
commit r11-4729-g8f565d255a3157828e45f8b9844b3d156193c182
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Wed Nov 4 21:44:05 2020 +0000
libstdc++: Fix default mode of new basic_stringstream constructor [PR 97719]
libstdc++-v3/ChangeLog:
PR libstdc++/97719
* include/std/sstream (basic_stringstream(string_type&&, openmode)):
Fix default argument.
* testsuite/27_io/basic_stringstream/cons/char/97719.cc: New test.
Diff:
---
libstdc++-v3/include/std/sstream | 2 +-
.../27_io/basic_stringstream/cons/char/97719.cc | 40 ++++++++++++++++++++++
2 files changed, 41 insertions(+), 1 deletion(-)
diff --git a/libstdc++-v3/include/std/sstream b/libstdc++-v3/include/std/sstream
index 33a00486606..8acf1eb259a 100644
--- a/libstdc++-v3/include/std/sstream
+++ b/libstdc++-v3/include/std/sstream
@@ -976,7 +976,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
explicit
basic_stringstream(__string_type&& __str,
- ios_base::openmode __mode = ios_base::out
+ ios_base::openmode __mode = ios_base::in
| ios_base::out)
: __iostream_type(), _M_stringbuf(std::move(__str), __mode)
{ this->init(std::__addressof(_M_stringbuf)); }
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringstream/cons/char/97719.cc b/libstdc++-v3/testsuite/27_io/basic_stringstream/cons/char/97719.cc
new file mode 100644
index 00000000000..fa523a803b6
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringstream/cons/char/97719.cc
@@ -0,0 +1,40 @@
+// Copyright (C) 2020 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
+// <http://www.gnu.org/licenses/>.
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do run { target c++2a } }
+
+#include <sstream>
+#include <iterator>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+ // PR libstdc++/97719
+ std::string str = "a";
+ std::stringstream s(std::move(str));
+ std::istreambuf_iterator<char> i(s);
+ VERIFY( i != std::istreambuf_iterator<char>() );
+ VERIFY( *i == 'a' );
+}
+
+int
+main()
+{
+ test01();
+}
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