ardour/libs/pbd/demangle.cc
Robin Gareus c5e5659022
Fix crash when demangled symbol is n/a
std::string foo (NULL) can throw a std::__throw_logic_error
which was not caught.
2021-07-19 18:26:22 +02:00

72 lines
1.9 KiB
C++

/*
* Copyright (C) 2000-2007 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2015 Tim Mayberry <mojofunk@gmail.com>
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "pbd/demangle.h"
#if defined(__GLIBCXX__)
#include <cxxabi.h>
#endif
std::string
PBD::demangle_symbol (const std::string& mangled_symbol)
{
#if defined(__GLIBCXX__)
try {
int status;
char* realname = abi::__cxa_demangle (mangled_symbol.c_str(), 0, 0, &status);
std::string demangled_symbol (realname);
free (realname);
return demangled_symbol;
} catch (...) {
/* may happen if realname == NULL */
}
#endif
/* Note: on win32, you can use UnDecorateSymbolName.
See http://msdn.microsoft.com/en-us/library/ms681400%28VS.85%29.aspx
See also: http://msdn.microsoft.com/en-us/library/ms680344%28VS.85%29.aspx
*/
return mangled_symbol;
}
std::string
PBD::demangle (std::string const& str)
{
std::string::size_type const b = str.find_first_of ("(");
if (b == std::string::npos) {
return demangle_symbol (str);
}
std::string::size_type const p = str.find_last_of ("+");
if (p == std::string::npos) {
return demangle_symbol (str);
}
if ((p - b) <= 1) {
return demangle_symbol (str);
}
std::string const symbol = str.substr (b + 1, p - b - 1);
return demangle_symbol (symbol);
}