567 lines
15 KiB
C++
567 lines
15 KiB
C++
// -*- C++ -*-
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// Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
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// Free Software Foundation, Inc.
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 3, or (at
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// your option) any later version.
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// Benjamin Kosnik <bkoz@redhat.com>
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#include "testsuite_abi.h"
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#include <cstdlib>
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#include <sstream>
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#include <fstream>
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#include <iostream>
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#include <vector>
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#include <algorithm>
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using namespace std;
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void
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symbol::init(string& data)
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{
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const char delim = ':';
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const char version_delim = '@';
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const string::size_type npos = string::npos;
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string::size_type n = 0;
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// Set the type.
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if (data.find("FUNC") == 0)
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type = symbol::function;
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else if (data.find("OBJECT") == 0)
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type = symbol::object;
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else if (data.find("TLS") == 0)
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type = symbol::tls;
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n = data.find_first_of(delim);
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if (n != npos)
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data.erase(data.begin(), data.begin() + n + 1);
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// Iff object or TLS, get size info.
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if (type == symbol::object || type == symbol::tls)
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{
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n = data.find_first_of(delim);
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if (n != npos)
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{
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string objectsize(data.begin(), data.begin() + n);
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istringstream iss(objectsize);
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int x;
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iss >> x;
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if (!iss.fail())
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size = x;
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data.erase(data.begin(), data.begin() + n + 1);
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}
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}
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// Set the name and raw_name.
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raw_name = string(data.begin(), data.end());
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n = data.find_first_of(version_delim);
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if (n != npos)
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{
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// Found version string.
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name = string(data.begin(), data.begin() + n);
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n = data.find_last_of(version_delim);
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data.erase(data.begin(), data.begin() + n + 1);
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// Set version name.
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version_name = data;
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}
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else
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{
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// No versioning info.
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name = string(data.begin(), data.end());
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version_status = symbol::none;
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}
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// Set the demangled name.
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demangled_name = demangle(name);
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}
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void
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symbol::print() const
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{
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const char tab = '\t';
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cout << name << endl;
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if (demangled_name != name)
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cout << demangled_name << endl;
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string vers;
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switch (version_status)
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{
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case none:
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vers = "none";
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break;
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case compatible:
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vers = "compatible";
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break;
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case incompatible:
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vers = "incompatible";
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break;
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case unversioned:
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vers = "unversioned";
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break;
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default:
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vers = "<default>";
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}
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cout << "version status: " << vers << endl;
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if (version_name.size()
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&& (version_status == compatible || version_status == incompatible))
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cout << version_name << endl;
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string type_string;
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switch (type)
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{
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case function:
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type_string = "function";
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break;
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case object:
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type_string = "object";
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break;
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case tls:
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type_string = "tls";
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break;
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case uncategorized:
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type_string = "uncategorized";
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break;
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default:
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type_string = "<default>";
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}
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cout << "type: " << type_string << endl;
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if (type == object || type == tls)
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cout << "type size: " << size << endl;
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string status_string;
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switch (status)
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{
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case added:
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status_string = "added";
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break;
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case subtracted:
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status_string = "subtracted";
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break;
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case undesignated:
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status_string = "undesignated";
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break;
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default:
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status_string = "<default>";
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}
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cout << "status: " << status_string << endl;
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cout << endl;
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}
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bool
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check_version(symbol& test, bool added)
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{
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// Construct list of compatible versions.
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typedef std::vector<std::string> compat_list;
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static compat_list known_versions;
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if (known_versions.empty())
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{
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// NB: First version here must be the default version for this
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// version of DT_SONAME.
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known_versions.push_back("GLIBCXX_3.4");
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known_versions.push_back("GLIBCXX_3.4.1");
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known_versions.push_back("GLIBCXX_3.4.2");
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known_versions.push_back("GLIBCXX_3.4.3");
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known_versions.push_back("GLIBCXX_3.4.4");
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known_versions.push_back("GLIBCXX_3.4.5");
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known_versions.push_back("GLIBCXX_3.4.6");
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known_versions.push_back("GLIBCXX_3.4.7");
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known_versions.push_back("GLIBCXX_3.4.8");
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known_versions.push_back("GLIBCXX_3.4.9");
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known_versions.push_back("GLIBCXX_3.4.10");
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known_versions.push_back("GLIBCXX_3.4.11");
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known_versions.push_back("GLIBCXX_3.4.12");
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known_versions.push_back("GLIBCXX_3.4.13");
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known_versions.push_back("GLIBCXX_3.4.14");
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known_versions.push_back("GLIBCXX_3.4.15");
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known_versions.push_back("GLIBCXX_3.4.16");
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known_versions.push_back("GLIBCXX_3.4.17");
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known_versions.push_back("GLIBCXX_LDBL_3.4");
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known_versions.push_back("GLIBCXX_LDBL_3.4.7");
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known_versions.push_back("GLIBCXX_LDBL_3.4.10");
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known_versions.push_back("CXXABI_1.3");
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known_versions.push_back("CXXABI_1.3.1");
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known_versions.push_back("CXXABI_1.3.2");
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known_versions.push_back("CXXABI_1.3.3");
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known_versions.push_back("CXXABI_1.3.4");
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known_versions.push_back("CXXABI_TM_1");
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known_versions.push_back("CXXABI_1.3.5");
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known_versions.push_back("CXXABI_1.3.6");
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known_versions.push_back("CXXABI_LDBL_1.3");
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}
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compat_list::iterator begin = known_versions.begin();
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compat_list::iterator end = known_versions.end();
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// Check for compatible version.
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if (test.version_name.size())
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{
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compat_list::iterator it1 = find(begin, end, test.version_name);
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compat_list::iterator it2 = find(begin, end, test.name);
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if (it1 != end)
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test.version_status = symbol::compatible;
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else
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test.version_status = symbol::incompatible;
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// Check that added symbols aren't added in the base versions.
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if (added
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&& (test.version_name == known_versions[0]
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|| test.version_name == "CXXABI_1.3"
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|| test.version_name == "GLIBCXX_LDBL_3.4"
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|| test.version_name == "CXXABI_LDBL_1.3"))
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test.version_status = symbol::incompatible;
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// Check that long double compatibility symbols demangled as
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// __float128 are put into some _LDBL_ version name.
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if (added && test.demangled_name.find("__float128") != std::string::npos)
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{
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// Has to be in _LDBL_ version name.
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if (test.version_name.find("_LDBL_") == std::string::npos)
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test.version_status = symbol::incompatible;
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}
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// Check for weak label.
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if (it1 == end && it2 == end)
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test.version_status = symbol::incompatible;
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// Check that
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// GLIBCXX_3.4
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// GLIBCXX_3.4.5
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// version as compatible
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// XXX
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}
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else
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{
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if (added)
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{
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// New version labels are ok. The rest are not.
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compat_list::iterator it2 = find(begin, end, test.name);
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if (it2 != end)
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test.version_status = symbol::compatible;
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else
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test.version_status = symbol::incompatible;
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}
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}
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return test.version_status == symbol::compatible;
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}
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bool
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check_compatible(symbol& lhs, symbol& rhs, bool verbose)
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{
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bool ret = true;
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const char tab = '\t';
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// Check to see if symbol_objects are compatible.
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if (lhs.type != rhs.type)
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{
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ret = false;
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if (verbose)
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cout << tab << "incompatible types" << endl;
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}
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if (lhs.name != rhs.name)
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{
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ret = false;
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if (verbose)
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cout << tab << "incompatible names" << endl;
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}
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if (lhs.size != rhs.size)
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{
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ret = false;
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if (verbose)
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{
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cout << tab << "incompatible sizes" << endl;
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cout << tab << lhs.size << endl;
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cout << tab << rhs.size << endl;
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}
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}
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if (lhs.version_name != rhs.version_name
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&& !check_version(lhs) && !check_version(rhs))
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{
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ret = false;
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if (verbose)
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{
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cout << tab << "incompatible versions" << endl;
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cout << tab << lhs.version_name << endl;
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cout << tab << rhs.version_name << endl;
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}
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}
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if (verbose)
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cout << endl;
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return ret;
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}
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inline bool
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has_symbol(const string& name, const symbols& s) throw()
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{ return s.find(name) != s.end(); }
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const symbol&
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get_symbol(const string& name, const symbols& s)
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{
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symbols::const_iterator i = s.find(name);
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if (i != s.end())
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{
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return i->second;
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}
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else
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{
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ostringstream os;
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os << "get_symbol failed for symbol " << name;
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__throw_logic_error(os.str().c_str());
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}
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}
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void
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examine_symbol(const char* name, const char* file)
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{
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try
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{
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symbols s = create_symbols(file);
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const symbol& sym = get_symbol(name, s);
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sym.print();
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}
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catch(...)
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{ __throw_exception_again; }
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}
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int
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compare_symbols(const char* baseline_file, const char* test_file,
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bool verbose)
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{
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// Input both lists of symbols into container.
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symbols baseline = create_symbols(baseline_file);
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symbols test = create_symbols(test_file);
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// Sanity check results.
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if (!baseline.size() || !test.size())
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{
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cerr << "Problems parsing the list of exported symbols." << endl;
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exit(2);
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}
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// Check to see if any long double compatibility symbols are produced.
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bool ld_version_found(false);
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symbols::iterator li(test.begin());
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while (!ld_version_found && li != test.end())
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{
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if (li->second.version_name.find("_LDBL_") != std::string::npos)
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ld_version_found = true;
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++li;
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}
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// Sort out names.
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// Assuming all baseline names and test names are both unique w/ no
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// duplicates.
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//
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// The names added to missing_names are baseline names not found in
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// test names
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// -> symbols that have been deleted.
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//
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// The names added to added_names are test names not in
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// baseline names
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// -> symbols that have been added.
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typedef std::vector<std::string> symbol_names;
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symbol_names shared_names;
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symbol_names missing_names;
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symbol_names added_names;
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for (li = test.begin(); li != test.end(); ++li)
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added_names.push_back(li->first);
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for (symbols::iterator i = baseline.begin(); i != baseline.end(); ++i)
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{
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string name(i->first);
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symbol_names::iterator end = added_names.end();
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symbol_names::iterator it = find(added_names.begin(), end, name);
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if (it != end)
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{
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// Found.
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shared_names.push_back(name);
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added_names.erase(it);
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}
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else
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{
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// Iff no test long double compatibility symbols at all and the symbol
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// missing is a baseline long double compatibility symbol, skip.
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string version_name(i->second.version_name);
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bool base_ld(version_name.find("_LDBL_") != std::string::npos);
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if (!base_ld || base_ld && ld_version_found)
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missing_names.push_back(name);
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}
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}
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// Fill out list of incompatible symbols.
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typedef pair<symbol, symbol> symbol_pair;
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vector<symbol_pair> incompatible;
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// Check missing names for compatibility.
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for (size_t j = 0; j < missing_names.size(); ++j)
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{
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symbol& sbase = baseline[missing_names[j]];
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sbase.status = symbol::subtracted;
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incompatible.push_back(symbol_pair(sbase, sbase));
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}
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// Check shared names for compatibility.
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const symbol_names::size_type shared_size = shared_names.size();
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for (size_t k = 0; k < shared_size; ++k)
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{
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symbol& sbase = baseline[shared_names[k]];
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symbol& stest = test[shared_names[k]];
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stest.status = symbol::existing;
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if (!check_compatible(sbase, stest))
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incompatible.push_back(symbol_pair(sbase, stest));
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}
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// Check added names for compatibility.
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const symbol_names::size_type added_size = added_names.size();
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for (size_t l = 0; l < added_size; ++l)
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{
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symbol& stest = test[added_names[l]];
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stest.status = symbol::added;
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if (!check_version(stest, true))
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incompatible.push_back(symbol_pair(stest, stest));
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}
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// Report results.
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if (verbose && added_names.size())
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{
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cout << endl << added_names.size() << " added symbols " << endl;
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for (size_t j = 0; j < added_names.size() ; ++j)
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{
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cout << j << endl;
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test[added_names[j]].print();
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}
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}
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if (verbose && missing_names.size())
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{
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cout << endl << missing_names.size() << " missing symbols " << endl;
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for (size_t j = 0; j < missing_names.size() ; ++j)
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{
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cout << j << endl;
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baseline[missing_names[j]].print();
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}
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}
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if (verbose && incompatible.size())
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{
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cout << endl << incompatible.size() << " incompatible symbols " << endl;
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for (size_t j = 0; j < incompatible.size() ; ++j)
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{
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// First, print index.
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cout << j << endl;
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// Second, report name.
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symbol& sbase = incompatible[j].first;
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symbol& stest = incompatible[j].second;
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stest.print();
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// Second, report reason or reasons incompatible.
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check_compatible(sbase, stest, true);
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}
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}
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cout << "\n\t\t=== libstdc++-v3 check-abi Summary ===" << endl;
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cout << endl;
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cout << "# of added symbols:\t\t " << added_names.size() << endl;
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cout << "# of missing symbols:\t\t " << missing_names.size() << endl;
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cout << "# of incompatible symbols:\t " << incompatible.size() << endl;
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cout << endl;
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cout << "using: " << baseline_file << endl;
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return !(missing_names.size() || incompatible.size());
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}
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symbols
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create_symbols(const char* file)
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{
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symbols s;
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ifstream ifs(file);
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if (ifs.is_open())
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{
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// Organize file data into an associated container (symbols) of symbol
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// objects mapped to mangled names without versioning
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// information.
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const string empty;
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string line = empty;
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while (getline(ifs, line).good())
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{
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symbol tmp;
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tmp.init(line);
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s[tmp.name] = tmp;
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line = empty;
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}
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}
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else
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{
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ostringstream os;
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os << "create_symbols failed for file " << file;
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__throw_runtime_error(os.str().c_str());
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}
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return s;
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}
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const char*
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demangle(const std::string& mangled)
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{
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const char* name;
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if (mangled[0] != '_' || mangled[1] != 'Z')
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{
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// This is not a mangled symbol, thus has "C" linkage.
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name = mangled.c_str();
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}
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else
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{
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// Use __cxa_demangle to demangle.
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int status = 0;
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name = abi::__cxa_demangle(mangled.c_str(), 0, 0, &status);
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if (!name)
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{
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switch (status)
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|
{
|
|
case 0:
|
|
name = "error code = 0: success";
|
|
break;
|
|
case -1:
|
|
name = "error code = -1: memory allocation failure";
|
|
break;
|
|
case -2:
|
|
name = "error code = -2: invalid mangled name";
|
|
break;
|
|
case -3:
|
|
name = "error code = -3: invalid arguments";
|
|
break;
|
|
default:
|
|
name = "error code unknown - who knows what happened";
|
|
}
|
|
}
|
|
}
|
|
return name;
|
|
}
|
|
|