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merge(3p/glog): Vendor glog from commit 'afe04691'

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Vincent Ambo 2020-05-27 01:26:30 +01:00
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third_party/glog/src/demangle_unittest.cc vendored Normal file
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// Copyright (c) 2006, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Author: Satoru Takabayashi
//
// Unit tests for functions in demangle.c.
#include "utilities.h"
#include <iostream>
#include <fstream>
#include <string>
#include "glog/logging.h"
#include "demangle.h"
#include "googletest.h"
#include "config.h"
#ifdef HAVE_LIB_GFLAGS
#include <gflags/gflags.h>
using namespace GFLAGS_NAMESPACE;
#endif
GLOG_DEFINE_bool(demangle_filter, false,
"Run demangle_unittest in filter mode");
using namespace std;
using namespace GOOGLE_NAMESPACE;
// A wrapper function for Demangle() to make the unit test simple.
static const char *DemangleIt(const char * const mangled) {
static char demangled[4096];
if (Demangle(mangled, demangled, sizeof(demangled))) {
return demangled;
} else {
return mangled;
}
}
#if defined(OS_WINDOWS)
TEST(Demangle, Windows) {
EXPECT_STREQ(
"public: static void __cdecl Foo::func(int)",
DemangleIt("?func@Foo@@SAXH@Z"));
EXPECT_STREQ(
"public: static void __cdecl Foo::func(int)",
DemangleIt("@ILT+1105(?func@Foo@@SAXH@Z)"));
EXPECT_STREQ(
"int __cdecl foobarArray(int * const)",
DemangleIt("?foobarArray@@YAHQAH@Z"));
}
#else
// Test corner cases of bounary conditions.
TEST(Demangle, CornerCases) {
const size_t size = 10;
char tmp[size] = { 0 };
const char *demangled = "foobar()";
const char *mangled = "_Z6foobarv";
EXPECT_TRUE(Demangle(mangled, tmp, sizeof(tmp)));
// sizeof("foobar()") == size - 1
EXPECT_STREQ(demangled, tmp);
EXPECT_TRUE(Demangle(mangled, tmp, size - 1));
EXPECT_STREQ(demangled, tmp);
EXPECT_FALSE(Demangle(mangled, tmp, size - 2)); // Not enough.
EXPECT_FALSE(Demangle(mangled, tmp, 1));
EXPECT_FALSE(Demangle(mangled, tmp, 0));
EXPECT_FALSE(Demangle(mangled, NULL, 0)); // Should not cause SEGV.
}
// Test handling of functions suffixed with .clone.N, which is used by GCC
// 4.5.x, and .constprop.N and .isra.N, which are used by GCC 4.6.x. These
// suffixes are used to indicate functions which have been cloned during
// optimization. We ignore these suffixes.
TEST(Demangle, Clones) {
char tmp[20];
EXPECT_TRUE(Demangle("_ZL3Foov", tmp, sizeof(tmp)));
EXPECT_STREQ("Foo()", tmp);
EXPECT_TRUE(Demangle("_ZL3Foov.clone.3", tmp, sizeof(tmp)));
EXPECT_STREQ("Foo()", tmp);
EXPECT_TRUE(Demangle("_ZL3Foov.constprop.80", tmp, sizeof(tmp)));
EXPECT_STREQ("Foo()", tmp);
EXPECT_TRUE(Demangle("_ZL3Foov.isra.18", tmp, sizeof(tmp)));
EXPECT_STREQ("Foo()", tmp);
EXPECT_TRUE(Demangle("_ZL3Foov.isra.2.constprop.18", tmp, sizeof(tmp)));
EXPECT_STREQ("Foo()", tmp);
// Invalid (truncated), should not demangle.
EXPECT_FALSE(Demangle("_ZL3Foov.clo", tmp, sizeof(tmp)));
// Invalid (.clone. not followed by number), should not demangle.
EXPECT_FALSE(Demangle("_ZL3Foov.clone.", tmp, sizeof(tmp)));
// Invalid (.clone. followed by non-number), should not demangle.
EXPECT_FALSE(Demangle("_ZL3Foov.clone.foo", tmp, sizeof(tmp)));
// Invalid (.constprop. not followed by number), should not demangle.
EXPECT_FALSE(Demangle("_ZL3Foov.isra.2.constprop.", tmp, sizeof(tmp)));
}
TEST(Demangle, FromFile) {
string test_file = FLAGS_test_srcdir + "/src/demangle_unittest.txt";
ifstream f(test_file.c_str()); // The file should exist.
EXPECT_FALSE(f.fail());
string line;
while (getline(f, line)) {
// Lines start with '#' are considered as comments.
if (line.empty() || line[0] == '#') {
continue;
}
// Each line should contain a mangled name and a demangled name
// separated by '\t'. Example: "_Z3foo\tfoo"
string::size_type tab_pos = line.find('\t');
EXPECT_NE(string::npos, tab_pos);
string mangled = line.substr(0, tab_pos);
string demangled = line.substr(tab_pos + 1);
EXPECT_EQ(demangled, DemangleIt(mangled.c_str()));
}
}
#endif
int main(int argc, char **argv) {
#ifdef HAVE_LIB_GFLAGS
ParseCommandLineFlags(&argc, &argv, true);
#endif
InitGoogleTest(&argc, argv);
FLAGS_logtostderr = true;
InitGoogleLogging(argv[0]);
if (FLAGS_demangle_filter) {
// Read from cin and write to cout.
string line;
while (getline(cin, line, '\n')) {
cout << DemangleIt(line.c_str()) << endl;
}
return 0;
} else if (argc > 1) {
cout << DemangleIt(argv[1]) << endl;
return 0;
} else {
return RUN_ALL_TESTS();
}
}