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comparison: toolkit/crashreporter/google-breakpad/src/common/stabs_to_module_unittest.cc

toolkit/crashreporter/google-breakpad/src/common/stabs_to_module_unittest.cc

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TOR_BUG_3246
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1 // Copyright (c) 2010 Google Inc.
2 // All rights reserved.
3 //
4 // Redistribution and use in source and binary forms, with or without
5 // modification, are permitted provided that the following conditions are
6 // met:
7 //
8 // * Redistributions of source code must retain the above copyright
9 // notice, this list of conditions and the following disclaimer.
10 // * Redistributions in binary form must reproduce the above
11 // copyright notice, this list of conditions and the following disclaimer
12 // in the documentation and/or other materials provided with the
13 // distribution.
14 // * Neither the name of Google Inc. nor the names of its
15 // contributors may be used to endorse or promote products derived from
16 // this software without specific prior written permission.
17 //
18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
30 // Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
31
32 // dump_stabs_unittest.cc: Unit tests for StabsToModule.
33
34 #include <vector>
35
36 #include "breakpad_googletest_includes.h"
37 #include "common/stabs_to_module.h"
38
39 using google_breakpad::Module;
40 using google_breakpad::StabsToModule;
41 using std::vector;
42
43 TEST(StabsToModule, SimpleCU) {
44 Module m("name", "os", "arch", "id");
45 StabsToModule h(&m);
46
47 // Feed in a simple compilation unit that defines a function with
48 // one line.
49 EXPECT_TRUE(h.StartCompilationUnit("compilation-unit", 0x9f4d1271e50db93bLL,
50 "build-directory"));
51 EXPECT_TRUE(h.StartFunction("function", 0xfde4abbed390c394LL));
52 EXPECT_TRUE(h.Line(0xfde4abbed390c394LL, "source-file-name", 174823314));
53 EXPECT_TRUE(h.EndFunction(0xfde4abbed390c3a4LL));
54 EXPECT_TRUE(h.EndCompilationUnit(0xfee4abbed390c3a4LL));
55 h.Finalize();
56
57 // Now check to see what has been added to the Module.
58 Module::File *file = m.FindExistingFile("source-file-name");
59 ASSERT_TRUE(file != NULL);
60
61 vector<Module::Function *> functions;
62 m.GetFunctions(&functions, functions.end());
63 ASSERT_EQ((size_t) 1, functions.size());
64 Module::Function *function = functions[0];
65 EXPECT_STREQ("function", function->name.c_str());
66 EXPECT_EQ(0xfde4abbed390c394LL, function->address);
67 EXPECT_EQ(0x10U, function->size);
68 EXPECT_EQ(0U, function->parameter_size);
69 ASSERT_EQ((size_t) 1, function->lines.size());
70 Module::Line *line = &function->lines[0];
71 EXPECT_EQ(0xfde4abbed390c394LL, line->address);
72 EXPECT_EQ(0x10U, line->size); // derived from EndFunction
73 EXPECT_TRUE(line->file == file);
74 EXPECT_EQ(174823314, line->number);
75 }
76
77 #ifdef __GNUC__
78 // Function name mangling can vary by compiler, so only run mangled-name
79 // tests on GCC for simplicity's sake.
80 TEST(StabsToModule, Externs) {
81 Module m("name", "os", "arch", "id");
82 StabsToModule h(&m);
83
84 // Feed in a few Extern symbols.
85 EXPECT_TRUE(h.Extern("_foo", 0xffff));
86 EXPECT_TRUE(h.Extern("__Z21dyldGlobalLockAcquirev", 0xaaaa));
87 EXPECT_TRUE(h.Extern("_MorphTableGetNextMorphChain", 0x1111));
88 h.Finalize();
89
90 // Now check to see what has been added to the Module.
91 vector<Module::Extern *> externs;
92 m.GetExterns(&externs, externs.end());
93 ASSERT_EQ((size_t) 3, externs.size());
94 Module::Extern *extern1 = externs[0];
95 EXPECT_STREQ("MorphTableGetNextMorphChain", extern1->name.c_str());
96 EXPECT_EQ((Module::Address)0x1111, extern1->address);
97 Module::Extern *extern2 = externs[1];
98 EXPECT_STREQ("dyldGlobalLockAcquire()", extern2->name.c_str());
99 EXPECT_EQ((Module::Address)0xaaaa, extern2->address);
100 Module::Extern *extern3 = externs[2];
101 EXPECT_STREQ("foo", extern3->name.c_str());
102 EXPECT_EQ((Module::Address)0xffff, extern3->address);
103 }
104 #endif // __GNUC__
105
106 TEST(StabsToModule, DuplicateFunctionNames) {
107 Module m("name", "os", "arch", "id");
108 StabsToModule h(&m);
109
110 // Compilation unit with one function, mangled name.
111 EXPECT_TRUE(h.StartCompilationUnit("compilation-unit", 0xf2cfda36ecf7f46cLL,
112 "build-directory"));
113 EXPECT_TRUE(h.StartFunction("funcfoo",
114 0xf2cfda36ecf7f46dLL));
115 EXPECT_TRUE(h.EndFunction(0));
116 EXPECT_TRUE(h.StartFunction("funcfoo",
117 0xf2cfda36ecf7f46dLL));
118 EXPECT_TRUE(h.EndFunction(0));
119 EXPECT_TRUE(h.EndCompilationUnit(0));
120
121 h.Finalize();
122
123 // Now check to see what has been added to the Module.
124 Module::File *file = m.FindExistingFile("compilation-unit");
125 ASSERT_TRUE(file != NULL);
126
127 vector<Module::Function *> functions;
128 m.GetFunctions(&functions, functions.end());
129 ASSERT_EQ(1U, functions.size());
130
131 Module::Function *function = functions[0];
132 EXPECT_EQ(0xf2cfda36ecf7f46dLL, function->address);
133 EXPECT_LT(0U, function->size); // should have used dummy size
134 EXPECT_EQ(0U, function->parameter_size);
135 ASSERT_EQ(0U, function->lines.size());
136 }
137
138 TEST(InferSizes, LineSize) {
139 Module m("name", "os", "arch", "id");
140 StabsToModule h(&m);
141
142 // Feed in a simple compilation unit that defines a function with
143 // one line.
144 EXPECT_TRUE(h.StartCompilationUnit("compilation-unit", 0xb4513962eff94e92LL,
145 "build-directory"));
146 EXPECT_TRUE(h.StartFunction("function", 0xb4513962eff94e92LL));
147 EXPECT_TRUE(h.Line(0xb4513962eff94e92LL, "source-file-name-1", 77396614));
148 EXPECT_TRUE(h.Line(0xb4513963eff94e92LL, "source-file-name-2", 87660088));
149 EXPECT_TRUE(h.EndFunction(0)); // unknown function end address
150 EXPECT_TRUE(h.EndCompilationUnit(0)); // unknown CU end address
151 EXPECT_TRUE(h.StartCompilationUnit("compilation-unit-2", 0xb4523963eff94e92LL,
152 "build-directory-2")); // next boundary
153 EXPECT_TRUE(h.EndCompilationUnit(0));
154 h.Finalize();
155
156 // Now check to see what has been added to the Module.
157 Module::File *file1 = m.FindExistingFile("source-file-name-1");
158 ASSERT_TRUE(file1 != NULL);
159 Module::File *file2 = m.FindExistingFile("source-file-name-2");
160 ASSERT_TRUE(file2 != NULL);
161
162 vector<Module::Function *> functions;
163 m.GetFunctions(&functions, functions.end());
164 ASSERT_EQ((size_t) 1, functions.size());
165
166 Module::Function *function = functions[0];
167 EXPECT_STREQ("function", function->name.c_str());
168 EXPECT_EQ(0xb4513962eff94e92LL, function->address);
169 EXPECT_EQ(0x1000100000000ULL, function->size); // inferred from CU end
170 EXPECT_EQ(0U, function->parameter_size);
171 ASSERT_EQ((size_t) 2, function->lines.size());
172
173 Module::Line *line1 = &function->lines[0];
174 EXPECT_EQ(0xb4513962eff94e92LL, line1->address);
175 EXPECT_EQ(0x100000000ULL, line1->size); // derived from EndFunction
176 EXPECT_TRUE(line1->file == file1);
177 EXPECT_EQ(77396614, line1->number);
178
179 Module::Line *line2 = &function->lines[1];
180 EXPECT_EQ(0xb4513963eff94e92LL, line2->address);
181 EXPECT_EQ(0x1000000000000ULL, line2->size); // derived from EndFunction
182 EXPECT_TRUE(line2->file == file2);
183 EXPECT_EQ(87660088, line2->number);
184 }
185
186 #ifdef __GNUC__
187 // Function name mangling can vary by compiler, so only run mangled-name
188 // tests on GCC for simplicity's sake.
189 TEST(FunctionNames, Mangled) {
190 Module m("name", "os", "arch", "id");
191 StabsToModule h(&m);
192
193 // Compilation unit with one function, mangled name.
194 EXPECT_TRUE(h.StartCompilationUnit("compilation-unit", 0xf2cfda63cef7f46cLL,
195 "build-directory"));
196 EXPECT_TRUE(h.StartFunction("_ZNSt6vectorIySaIyEE9push_backERKy",
197 0xf2cfda63cef7f46dLL));
198 EXPECT_TRUE(h.EndFunction(0));
199 EXPECT_TRUE(h.EndCompilationUnit(0));
200
201 h.Finalize();
202
203 // Now check to see what has been added to the Module.
204 Module::File *file = m.FindExistingFile("compilation-unit");
205 ASSERT_TRUE(file != NULL);
206
207 vector<Module::Function *> functions;
208 m.GetFunctions(&functions, functions.end());
209 ASSERT_EQ(1U, functions.size());
210
211 Module::Function *function = functions[0];
212 // This is GCC-specific, but we shouldn't be seeing STABS data anywhere
213 // but Linux.
214 EXPECT_STREQ("std::vector<unsigned long long, "
215 "std::allocator<unsigned long long> >::"
216 "push_back(unsigned long long const&)",
217 function->name.c_str());
218 EXPECT_EQ(0xf2cfda63cef7f46dLL, function->address);
219 EXPECT_LT(0U, function->size); // should have used dummy size
220 EXPECT_EQ(0U, function->parameter_size);
221 ASSERT_EQ(0U, function->lines.size());
222 }
223 #endif // __GNUC__
224
225 // The GNU toolchain can omit functions that are not used; however,
226 // when it does so, it doesn't clean up the debugging information that
227 // refers to them. In STABS, this results in compilation units whose
228 // SO addresses are zero.
229 TEST(Omitted, Function) {
230 Module m("name", "os", "arch", "id");
231 StabsToModule h(&m);
232
233 // The StartCompilationUnit and EndCompilationUnit calls may both have an
234 // address of zero if the compilation unit has had sections removed.
235 EXPECT_TRUE(h.StartCompilationUnit("compilation-unit", 0, "build-directory"));
236 EXPECT_TRUE(h.StartFunction("function", 0x2a133596));
237 EXPECT_TRUE(h.EndFunction(0));
238 EXPECT_TRUE(h.EndCompilationUnit(0));
239 }
240
241 // TODO --- if we actually cared about STABS. Even without these we've
242 // got full coverage of non-failure source lines in dump_stabs.cc.
243
244 // Line size from next line
245 // Line size from function end
246 // Line size from next function start
247 // line size from cu end
248 // line size from next cu start
249 // fallback size is something plausible
250
251 // function size from function end
252 // function size from next function start
253 // function size from cu end
254 // function size from next cu start
255 // fallback size is something plausible
256
257 // omitting functions outside the compilation unit's address range
258 // zero-line, one-line, many-line functions

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