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// Copyright (c) 2006, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Author: Satoru Takabayashi
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//
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// Unit tests for functions in demangle.c.
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#include "utilities.h"
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#include <iostream>
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#include <fstream>
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#include <string>
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#include "glog/logging.h"
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#include "demangle.h"
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#include "googletest.h"
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#include "config.h"
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#ifdef HAVE_LIB_GFLAGS
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#include <gflags/gflags.h>
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using namespace GFLAGS_NAMESPACE;
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#endif
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GLOG_DEFINE_bool(demangle_filter, false,
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"Run demangle_unittest in filter mode");
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using namespace std;
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using namespace GOOGLE_NAMESPACE;
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// A wrapper function for Demangle() to make the unit test simple.
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static const char *DemangleIt(const char * const mangled) {
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static char demangled[4096];
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if (Demangle(mangled, demangled, sizeof(demangled))) {
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return demangled;
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} else {
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return mangled;
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}
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}
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// Test corner cases of bounary conditions.
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TEST(Demangle, CornerCases) {
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char tmp[10];
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EXPECT_TRUE(Demangle("_Z6foobarv", tmp, sizeof(tmp)));
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// sizeof("foobar()") == 9
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EXPECT_STREQ("foobar()", tmp);
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EXPECT_TRUE(Demangle("_Z6foobarv", tmp, 9));
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EXPECT_STREQ("foobar()", tmp);
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EXPECT_FALSE(Demangle("_Z6foobarv", tmp, 8)); // Not enough.
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EXPECT_FALSE(Demangle("_Z6foobarv", tmp, 1));
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EXPECT_FALSE(Demangle("_Z6foobarv", tmp, 0));
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EXPECT_FALSE(Demangle("_Z6foobarv", NULL, 0)); // Should not cause SEGV.
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}
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// Test handling of functions suffixed with .clone.N, which is used by GCC
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// 4.5.x, and .constprop.N and .isra.N, which are used by GCC 4.6.x. These
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// suffixes are used to indicate functions which have been cloned during
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// optimization. We ignore these suffixes.
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TEST(Demangle, Clones) {
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char tmp[20];
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EXPECT_TRUE(Demangle("_ZL3Foov", tmp, sizeof(tmp)));
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EXPECT_STREQ("Foo()", tmp);
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EXPECT_TRUE(Demangle("_ZL3Foov.clone.3", tmp, sizeof(tmp)));
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EXPECT_STREQ("Foo()", tmp);
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EXPECT_TRUE(Demangle("_ZL3Foov.constprop.80", tmp, sizeof(tmp)));
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EXPECT_STREQ("Foo()", tmp);
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EXPECT_TRUE(Demangle("_ZL3Foov.isra.18", tmp, sizeof(tmp)));
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EXPECT_STREQ("Foo()", tmp);
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EXPECT_TRUE(Demangle("_ZL3Foov.isra.2.constprop.18", tmp, sizeof(tmp)));
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EXPECT_STREQ("Foo()", tmp);
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// Invalid (truncated), should not demangle.
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EXPECT_FALSE(Demangle("_ZL3Foov.clo", tmp, sizeof(tmp)));
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// Invalid (.clone. not followed by number), should not demangle.
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EXPECT_FALSE(Demangle("_ZL3Foov.clone.", tmp, sizeof(tmp)));
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// Invalid (.clone. followed by non-number), should not demangle.
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EXPECT_FALSE(Demangle("_ZL3Foov.clone.foo", tmp, sizeof(tmp)));
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// Invalid (.constprop. not followed by number), should not demangle.
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EXPECT_FALSE(Demangle("_ZL3Foov.isra.2.constprop.", tmp, sizeof(tmp)));
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}
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TEST(Demangle, FromFile) {
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string test_file = FLAGS_test_srcdir + "/src/demangle_unittest.txt";
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ifstream f(test_file.c_str()); // The file should exist.
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EXPECT_FALSE(f.fail());
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string line;
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while (getline(f, line)) {
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// Lines start with '#' are considered as comments.
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if (line.empty() || line[0] == '#') {
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continue;
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}
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// Each line should contain a mangled name and a demangled name
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// separated by '\t'. Example: "_Z3foo\tfoo"
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string::size_type tab_pos = line.find('\t');
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EXPECT_NE(string::npos, tab_pos);
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string mangled = line.substr(0, tab_pos);
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string demangled = line.substr(tab_pos + 1);
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EXPECT_EQ(demangled, DemangleIt(mangled.c_str()));
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}
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}
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int main(int argc, char **argv) {
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#ifdef HAVE_LIB_GFLAGS
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ParseCommandLineFlags(&argc, &argv, true);
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#endif
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InitGoogleTest(&argc, argv);
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FLAGS_logtostderr = true;
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InitGoogleLogging(argv[0]);
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if (FLAGS_demangle_filter) {
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// Read from cin and write to cout.
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string line;
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while (getline(cin, line, '\n')) {
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cout << DemangleIt(line.c_str()) << endl;
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}
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return 0;
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} else if (argc > 1) {
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cout << DemangleIt(argv[1]) << endl;
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return 0;
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} else {
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return RUN_ALL_TESTS();
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}
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}
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