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re PR libstdc++/47724 ([C++0x] Regex string anchors cause segfault)

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2011-02-17  Jonathan Wakely  <jwakely.gcc@gmail.com>

	PR libstdc++/47724
	* include/bits/regex_compiler.h (_Scanner::_M_advance): Do not treat
	line anchors as metacharacters.
	* testsuite/28_regex/basic_regex/ctors/47724.cc: New.

From-SVN: r170236
This commit is contained in:
Jonathan Wakely 2011-02-17 01:47:21 +00:00 • committed by Jonathan Wakely
parent bde8d7f701
commit 948ef71060
3 changed files with 45 additions and 0 deletions
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7
libstdc++-v3/ChangeLog
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@ -1,3 +1,10 @@
2011-02-17 Jonathan Wakely <jwakely.gcc@gmail.com>
PR libstdc++/47724
* include/bits/regex_compiler.h (_Scanner::_M_advance): Do not treat
line anchors as metacharacters.
* testsuite/28_regex/basic_regex/ctors/47724.cc: New.
2011-02-16 Paolo Carlini <paolo.carlini@oracle.com>
PR libstdc++/47773

4
libstdc++-v3/include/bits/regex_compiler.h
View file

@ -171,6 +171,9 @@ namespace __regex
_M_scan_in_brace();
return;
}
#if 0
// TODO: re-enable line anchors when _M_assertion is implemented.
// See PR libstdc++/47724
else if (_M_state & _S_state_at_start && __c == _M_ctype.widen('^'))
{
_M_curToken = _S_token_line_begin;
@ -183,6 +186,7 @@ namespace __regex
++_M_current;
return;
}
#endif
else if (__c == _M_ctype.widen('.'))
{
_M_curToken = _S_token_anychar;

34
libstdc++-v3/testsuite/28_regex/basic_regex/ctors/47724.cc Normal file
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@ -0,0 +1,34 @@
// { dg-options "-std=gnu++0x" }
// Copyright (C) 2011 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/>.
// PR libstdc++/47724
#include <regex>
void test01()
{
std::regex s("^$");
}
int
main()
{
test01();
return 0;
};