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re PR libstdc++/12600 (Demangler goes in infinite loop for certain invalid mangled names.)

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PR libstdc++/12600
* include/bits/demangle.h (session<Allocator>::
  decode_unqualified_name(string_type& output)): Fail on a
  <operator-name> when decoding <template-argument>.
* testsuite/demangle/regression/cw-15.cc: New.

From-SVN: r72480
This commit is contained in:
Carlo Wood 2003-10-14 17:46:19 +00:00 committed by Carlo Wood
parent 1638f5c9d0
commit be3faf8996
3 changed files with 75 additions and 38 deletions
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8
libstdc++-v3/ChangeLog
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@ -1,3 +1,11 @@
2003-10-14 Carlo Wood <carlo@alinoe.com>
PR libstdc++/12600
* include/bits/demangle.h (session<Allocator>::
decode_unqualified_name(string_type& output)): Fail on a
<operator-name> when decoding <template-argument>.
* testsuite/demangle/regression/cw-15.cc: New.
2003-10-14 Paolo Carlini <pcarlini@unitus.it>
PR libstdc++/11480

70
libstdc++-v3/include/bits/demangle.h
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@ -1938,48 +1938,41 @@ namespace __gnu_cxx
session<Allocator>::decode_unqualified_name(string_type& output)
{
_GLIBCXX_DEMANGLER_DOUT_ENTERING("decode_unqualified_name");
if (isdigit(current()))
if (M_inside_template_args)
{
if (!M_inside_template_args)
{
bool recursive_unqualified_name = (&M_function_name == &output);
// This can be a recursive call when we are decoding
// an <operator-name> that is a cast operator for a some
// <unqualified-name>; for example "operator Foo()".
// In that case this is thus not a ctor or dtor and we
// are not interested in updating M_function_name.
if (!recursive_unqualified_name)
M_function_name.clear();
M_name_is_template = false;
M_name_is_cdtor = false;
M_name_is_conversion_operator = false;
if (!decode_source_name(M_function_name))
_GLIBCXX_DEMANGLER_FAILURE;
if (!recursive_unqualified_name)
output += M_function_name;
}
else if (!decode_source_name(output))
if (!decode_source_name(output))
_GLIBCXX_DEMANGLER_FAILURE;
_GLIBCXX_DEMANGLER_RETURN;
}
if (islower(current()))
else if (isdigit(current()))
{
if (!M_inside_template_args)
{
bool recursive_unqualified_name = (&M_function_name == &output);
// This can be a recursive call when we are decoding
// an <operator-name> that is a cast operator for a some
// <unqualified-name>; for example "operator Foo()".
// In that case this is thus not a ctor or dtor and we
// are not interested in updating M_function_name.
if (!recursive_unqualified_name)
M_function_name.clear();
M_name_is_template = false;
M_name_is_cdtor = false;
M_name_is_conversion_operator = false;
if (!decode_operator_name(M_function_name))
_GLIBCXX_DEMANGLER_FAILURE;
output += M_function_name;
}
_GLIBCXX_DEMANGLER_RETURN;
}
if (current() == 'C' || current() == 'D')
{
if (M_inside_template_args)
M_name_is_template = false;
M_name_is_cdtor = false;
M_name_is_conversion_operator = false;
if (!decode_source_name(M_function_name))
_GLIBCXX_DEMANGLER_FAILURE;
if (!recursive_unqualified_name)
output += M_function_name;
}
else if (islower(current()))
{
M_function_name.clear();
M_name_is_template = false;
M_name_is_cdtor = false;
M_name_is_conversion_operator = false;
if (!decode_operator_name(M_function_name))
_GLIBCXX_DEMANGLER_FAILURE;
output += M_function_name;
}
else if (current() == 'C' || current() == 'D')
{
// <ctor-dtor-name> ::=
// C1 # complete object (in-charge) constructor
// C2 # base object (not-in-charge) constructor
@ -2005,9 +1998,10 @@ namespace __gnu_cxx
M_name_is_cdtor = true;
eat_current();
output += M_function_name;
_GLIBCXX_DEMANGLER_RETURN;
}
_GLIBCXX_DEMANGLER_FAILURE;
else
_GLIBCXX_DEMANGLER_FAILURE;
_GLIBCXX_DEMANGLER_RETURN;
}
// <unscoped-name> ::=

35
libstdc++-v3/testsuite/demangle/regression/cw-15.cc Normal file
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@ -0,0 +1,35 @@
// 2003-10-14 Carlo Wood <carlo@alinoe.com>
// Copyright (C) 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.
// IA 64 C++ ABI - 5.1 External Names (a.k.a. Mangling)
#include <testsuite_hooks.h>
// libcwd tests
int main()
{
using namespace __gnu_test;
// cplus-dem CORE
verify_demangle("_Z1xNiEE",
"error code = -2: invalid mangled name");
return 0;
}