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30 // Author: Satoru Takabayashi
32 // Unit tests for functions in demangle.c.
34 #include "utilities.h"
39 #include "glog/logging.h"
41 #include "googletest.h"
44 #ifdef HAVE_LIB_GFLAGS
45 #include <gflags/gflags.h>
46 using namespace GFLAGS_NAMESPACE;
49 GLOG_DEFINE_bool(demangle_filter, false,
50 "Run demangle_unittest in filter mode");
53 using namespace GOOGLE_NAMESPACE;
55 // A wrapper function for Demangle() to make the unit test simple.
56 static const char *DemangleIt(const char * const mangled) {
57 static char demangled[4096];
58 if (Demangle(mangled, demangled, sizeof(demangled))) {
65 #if defined(OS_WINDOWS)
67 TEST(Demangle, Windows) {
69 "public: static void __cdecl Foo::func(int)",
70 DemangleIt("?func@Foo@@SAXH@Z"));
72 "public: static void __cdecl Foo::func(int)",
73 DemangleIt("@ILT+1105(?func@Foo@@SAXH@Z)"));
75 "int __cdecl foobarArray(int * const)",
76 DemangleIt("?foobarArray@@YAHQAH@Z"));
81 // Test corner cases of bounary conditions.
82 TEST(Demangle, CornerCases) {
83 const size_t size = 10;
84 char tmp[size] = { 0 };
85 const char *demangled = "foobar()";
86 const char *mangled = "_Z6foobarv";
87 EXPECT_TRUE(Demangle(mangled, tmp, sizeof(tmp)));
88 // sizeof("foobar()") == size - 1
89 EXPECT_STREQ(demangled, tmp);
90 EXPECT_TRUE(Demangle(mangled, tmp, size - 1));
91 EXPECT_STREQ(demangled, tmp);
92 EXPECT_FALSE(Demangle(mangled, tmp, size - 2)); // Not enough.
93 EXPECT_FALSE(Demangle(mangled, tmp, 1));
94 EXPECT_FALSE(Demangle(mangled, tmp, 0));
95 EXPECT_FALSE(Demangle(mangled, NULL, 0)); // Should not cause SEGV.
98 // Test handling of functions suffixed with .clone.N, which is used by GCC
99 // 4.5.x, and .constprop.N and .isra.N, which are used by GCC 4.6.x. These
100 // suffixes are used to indicate functions which have been cloned during
101 // optimization. We ignore these suffixes.
102 TEST(Demangle, Clones) {
104 EXPECT_TRUE(Demangle("_ZL3Foov", tmp, sizeof(tmp)));
105 EXPECT_STREQ("Foo()", tmp);
106 EXPECT_TRUE(Demangle("_ZL3Foov.clone.3", tmp, sizeof(tmp)));
107 EXPECT_STREQ("Foo()", tmp);
108 EXPECT_TRUE(Demangle("_ZL3Foov.constprop.80", tmp, sizeof(tmp)));
109 EXPECT_STREQ("Foo()", tmp);
110 EXPECT_TRUE(Demangle("_ZL3Foov.isra.18", tmp, sizeof(tmp)));
111 EXPECT_STREQ("Foo()", tmp);
112 EXPECT_TRUE(Demangle("_ZL3Foov.isra.2.constprop.18", tmp, sizeof(tmp)));
113 EXPECT_STREQ("Foo()", tmp);
114 // Invalid (truncated), should not demangle.
115 EXPECT_FALSE(Demangle("_ZL3Foov.clo", tmp, sizeof(tmp)));
116 // Invalid (.clone. not followed by number), should not demangle.
117 EXPECT_FALSE(Demangle("_ZL3Foov.clone.", tmp, sizeof(tmp)));
118 // Invalid (.clone. followed by non-number), should not demangle.
119 EXPECT_FALSE(Demangle("_ZL3Foov.clone.foo", tmp, sizeof(tmp)));
120 // Invalid (.constprop. not followed by number), should not demangle.
121 EXPECT_FALSE(Demangle("_ZL3Foov.isra.2.constprop.", tmp, sizeof(tmp)));
124 TEST(Demangle, FromFile) {
125 string test_file = FLAGS_test_srcdir + "/src/demangle_unittest.txt";
126 ifstream f(test_file.c_str()); // The file should exist.
127 EXPECT_FALSE(f.fail());
130 while (getline(f, line)) {
131 // Lines start with '#' are considered as comments.
132 if (line.empty() || line[0] == '#') {
135 // Each line should contain a mangled name and a demangled name
136 // separated by '\t'. Example: "_Z3foo\tfoo"
137 string::size_type tab_pos = line.find('\t');
138 EXPECT_NE(string::npos, tab_pos);
139 string mangled = line.substr(0, tab_pos);
140 string demangled = line.substr(tab_pos + 1);
141 EXPECT_EQ(demangled, DemangleIt(mangled.c_str()));
147 int main(int argc, char **argv) {
148 #ifdef HAVE_LIB_GFLAGS
149 ParseCommandLineFlags(&argc, &argv, true);
151 InitGoogleTest(&argc, argv);
153 FLAGS_logtostderr = true;
154 InitGoogleLogging(argv[0]);
155 if (FLAGS_demangle_filter) {
156 // Read from cin and write to cout.
158 while (getline(cin, line, '\n')) {
159 cout << DemangleIt(line.c_str()) << endl;
162 } else if (argc > 1) {
163 cout << DemangleIt(argv[1]) << endl;
166 return RUN_ALL_TESTS();