xref: /aosp_15_r20/system/extras/simpleperf/dso_test.cpp (revision 288bf5226967eb3dac5cce6c939ccc2a7f2b4fe5) 
1 /*
2  * Copyright (C) 2018 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #include "dso.h"
18 
19 #include <gtest/gtest.h>
20 
21 #include <android-base/file.h>
22 #include <android-base/stringprintf.h>
23 #include <android-base/test_utils.h>
24 
25 #include "get_test_data.h"
26 #include "read_apk.h"
27 #include "thread_tree.h"
28 #include "utils.h"
29 
30 using namespace simpleperf;
31 using namespace simpleperf_dso_impl;
32 
33 // @CddTest = 6.1/C-0-2
TEST(DebugElfFileFinder,use_build_id_list)34 TEST(DebugElfFileFinder, use_build_id_list) {
35   // Create a temp symdir with build_id_list.
36   TemporaryDir tmpdir;
37   TemporaryFile tmpfile(tmpdir.path);
38   std::string data;
39   ASSERT_TRUE(android::base::ReadFileToString(GetTestData(ELF_FILE), &data));
40   ASSERT_TRUE(android::base::WriteStringToFile(data, tmpfile.path));
41   BuildId build_id(ELF_FILE_BUILD_ID);
42   std::string build_id_list = android::base::StringPrintf(
43       "%s=%s\n", build_id.ToString().c_str(), android::base::Basename(tmpfile.path).c_str());
44   std::string build_id_list_file = std::string(tmpdir.path) + "/build_id_list";
45   ASSERT_TRUE(android::base::WriteStringToFile(build_id_list, build_id_list_file));
46 
47   DebugElfFileFinder finder;
48   ASSERT_TRUE(finder.SetSymFsDir(tmpdir.path));
49   ASSERT_EQ(finder.FindDebugFile("elf", false, build_id), std::string(tmpfile.path));
50   unlink(build_id_list_file.c_str());
51 }
52 
ConvertPathSeparator(const std::string & path)53 static std::string ConvertPathSeparator(const std::string& path) {
54   std::string result = path;
55   if (OS_PATH_SEPARATOR != '/') {
56     std::replace(result.begin(), result.end(), '/', OS_PATH_SEPARATOR);
57   }
58   return result;
59 }
60 
61 // @CddTest = 6.1/C-0-2
TEST(DebugElfFileFinder,concatenating_symfs_dir)62 TEST(DebugElfFileFinder, concatenating_symfs_dir) {
63   DebugElfFileFinder finder;
64   ASSERT_TRUE(finder.SetSymFsDir(GetTestDataDir()));
65   ASSERT_EQ(finder.GetPathInSymFsDir("/system/libc.so"),
66             GetTestDataDir() + "system" + OS_PATH_SEPARATOR + "libc.so");
67   ASSERT_EQ(finder.GetPathInSymFsDir("/data/base.apk!/lib/base.so"),
68             GetTestDataDir() + "data" + OS_PATH_SEPARATOR + "base.apk!/lib/base.so");
69 
70   BuildId build_id(ELF_FILE_BUILD_ID);
71   ASSERT_EQ(finder.FindDebugFile(ELF_FILE, false, build_id), GetTestDataDir() + ELF_FILE);
72   std::string native_lib_in_apk = APK_FILE + "!/" + NATIVELIB_IN_APK;
73   std::string apk_path = ConvertPathSeparator(APK_FILE);
74   ASSERT_EQ(finder.FindDebugFile(native_lib_in_apk, false, native_lib_build_id),
75             GetTestDataDir() + apk_path + "!/" + NATIVELIB_IN_APK);
76 }
77 
78 // @CddTest = 6.1/C-0-2
TEST(DebugElfFileFinder,use_vdso)79 TEST(DebugElfFileFinder, use_vdso) {
80   DebugElfFileFinder finder;
81   std::string fake_vdso32 = "fake_vdso32";
82   std::string fake_vdso64 = "fake_vdso64";
83   finder.SetVdsoFile(fake_vdso32, false);
84   finder.SetVdsoFile(fake_vdso64, true);
85   BuildId build_id;
86   ASSERT_EQ(finder.FindDebugFile("[vdso]", false, build_id), fake_vdso32);
87   ASSERT_EQ(finder.FindDebugFile("[vdso]", true, build_id), fake_vdso64);
88 }
89 
90 // @CddTest = 6.1/C-0-2
TEST(DebugElfFileFinder,add_symbol_dir)91 TEST(DebugElfFileFinder, add_symbol_dir) {
92   DebugElfFileFinder finder;
93   ASSERT_FALSE(finder.AddSymbolDir(GetTestDataDir() + "dir_not_exist"));
94   ASSERT_EQ(finder.FindDebugFile("elf", false, CHECK_ELF_FILE_BUILD_ID), "elf");
95   std::string symfs_dir = ConvertPathSeparator(GetTestDataDir() + CORRECT_SYMFS_FOR_BUILD_ID_CHECK);
96   ASSERT_TRUE(finder.AddSymbolDir(symfs_dir));
97   ASSERT_EQ(finder.FindDebugFile("elf", false, CHECK_ELF_FILE_BUILD_ID),
98             symfs_dir + OS_PATH_SEPARATOR + "elf_for_build_id_check");
99 }
100 
101 // @CddTest = 6.1/C-0-2
TEST(DebugElfFileFinder,allow_mismatched_build_id)102 TEST(DebugElfFileFinder, allow_mismatched_build_id) {
103   DebugElfFileFinder finder;
104   std::string symfs_dir = ConvertPathSeparator(GetTestDataDir() + CORRECT_SYMFS_FOR_BUILD_ID_CHECK);
105   ASSERT_TRUE(finder.AddSymbolDir(symfs_dir));
106   // By default, can't find binary with empty or different build ids.
107   BuildId empty_build_id;
108   ASSERT_EQ(finder.FindDebugFile("/data/elf_for_build_id_check", false, empty_build_id),
109             "/data/elf_for_build_id_check");
110   BuildId different_build_id("01234");
111   ASSERT_EQ(finder.FindDebugFile("/data/elf_for_build_id_check", false, different_build_id),
112             "/data/elf_for_build_id_check");
113 
114   // With AllowMismatchedBuildId(), can find binary with empty and different build ids.
115   finder.AllowMismatchedBuildId();
116   empty_build_id = BuildId();
117   ASSERT_EQ(finder.FindDebugFile("/data/elf_for_build_id_check", false, empty_build_id),
118             symfs_dir + OS_PATH_SEPARATOR + "elf_for_build_id_check");
119   different_build_id = BuildId("01234");
120   ASSERT_EQ(finder.FindDebugFile("/data/elf_for_build_id_check", false, different_build_id),
121             symfs_dir + OS_PATH_SEPARATOR + "elf_for_build_id_check");
122 }
123 
124 // @CddTest = 6.1/C-0-2
TEST(DebugElfFileFinder,build_id_list)125 TEST(DebugElfFileFinder, build_id_list) {
126   DebugElfFileFinder finder;
127   // Find file in symfs dir with correct build_id_list.
128   std::string symfs_dir = ConvertPathSeparator(GetTestDataDir() + "data/symfs_with_build_id_list");
129   ASSERT_TRUE(finder.SetSymFsDir(symfs_dir));
130   ASSERT_EQ(finder.FindDebugFile("elf", false, CHECK_ELF_FILE_BUILD_ID),
131             symfs_dir + OS_PATH_SEPARATOR + "elf_for_build_id_check");
132 
133   // Find file in symfs_dir with wrong build_id_list.
134   symfs_dir = ConvertPathSeparator(GetTestDataDir() + "data/symfs_with_wrong_build_id_list");
135   finder.Reset();
136   ASSERT_TRUE(finder.SetSymFsDir(symfs_dir));
137   ASSERT_EQ(finder.FindDebugFile("elf", false, CHECK_ELF_FILE_BUILD_ID), "elf");
138 }
139 
140 // @CddTest = 6.1/C-0-2
TEST(DebugElfFileFinder,no_build_id)141 TEST(DebugElfFileFinder, no_build_id) {
142   DebugElfFileFinder finder;
143   // If not given a build id, we should match an elf in symfs without build id.
144   std::string symfs_dir = ConvertPathSeparator(GetTestDataDir() + "data/symfs_without_build_id");
145   ASSERT_TRUE(finder.SetSymFsDir(symfs_dir));
146   BuildId build_id;
147   ASSERT_EQ(finder.FindDebugFile("elf", false, build_id), symfs_dir + OS_PATH_SEPARATOR + "elf");
148 }
149 
150 // @CddTest = 6.1/C-0-2
TEST(DebugElfFileFinder,find_basename_in_symfs_dir)151 TEST(DebugElfFileFinder, find_basename_in_symfs_dir) {
152   DebugElfFileFinder finder;
153   // Find normal elf file.
154   finder.SetSymFsDir(GetTestDataDir());
155   BuildId build_id(ELF_FILE_BUILD_ID);
156   ASSERT_EQ(finder.FindDebugFile("random_dir/elf", false, build_id), GetTestData("elf"));
157 
158   // Find embedded native library.
159   ASSERT_EQ(finder.FindDebugFile("base.apk!/lib/x86_64/elf", false, build_id), GetTestData("elf"));
160 
161   // Find elf file without build id.
162   std::string symfs_dir = ConvertPathSeparator(GetTestDataDir() + "data/symfs_without_build_id");
163   finder.SetSymFsDir(symfs_dir);
164   build_id = BuildId();
165   ASSERT_EQ(finder.FindDebugFile("random_dir/elf", false, build_id),
166             symfs_dir + OS_PATH_SEPARATOR + "elf");
167 }
168 
169 // @CddTest = 6.1/C-0-2
TEST(DebugElfFileFinder,build_id_mismatch)170 TEST(DebugElfFileFinder, build_id_mismatch) {
171   DebugElfFileFinder finder;
172   finder.SetSymFsDir(GetTestDataDir());
173   CapturedStderr capture;
174   BuildId mismatch_build_id("0c12a384a9f4a3f3659b7171ca615dbec3a81f71");
175   std::string debug_file = finder.FindDebugFile(ELF_FILE, false, mismatch_build_id);
176   capture.Stop();
177   std::string stderr_output = capture.str();
178   ASSERT_EQ(debug_file, ELF_FILE);
179   ASSERT_NE(stderr_output.find("build id mismatch"), std::string::npos);
180 }
181 
182 // @CddTest = 6.1/C-0-2
TEST(dso,dex_file_dso)183 TEST(dso, dex_file_dso) {
184 #if defined(__linux__)
185   for (DsoType dso_type : {DSO_DEX_FILE, DSO_ELF_FILE}) {
186     std::unique_ptr<Dso> dso = Dso::CreateDso(dso_type, GetTestData("base.vdex"));
187     ASSERT_TRUE(dso);
188     dso->AddDexFileOffset(0x28);
189     ASSERT_EQ(DSO_DEX_FILE, dso->type());
190     const Symbol* symbol = dso->FindSymbol(0x6c77e);
191     ASSERT_NE(symbol, nullptr);
192     ASSERT_EQ(symbol->addr, static_cast<uint64_t>(0x6c77e));
193     ASSERT_EQ(symbol->len, static_cast<uint64_t>(0x16));
194     ASSERT_STREQ(symbol->DemangledName(),
195                  "com.example.simpleperf.simpleperfexamplewithnative.MixActivity$1.run");
196     uint64_t min_vaddr;
197     uint64_t file_offset_of_min_vaddr;
198     dso->GetMinExecutableVaddr(&min_vaddr, &file_offset_of_min_vaddr);
199     ASSERT_EQ(min_vaddr, 0);
200     ASSERT_EQ(file_offset_of_min_vaddr, 0);
201 
202     // Don't crash on not exist zip entry.
203     dso = Dso::CreateDso(dso_type, GetTestData("base.zip!/not_exist_entry"));
204     ASSERT_TRUE(dso);
205     ASSERT_EQ(nullptr, dso->FindSymbol(0));
206   }
207 #else
208   GTEST_LOG_(INFO) << "This test only runs on linux because of libdexfile";
209 #endif  // defined(__linux__)
210 }
211 
212 // @CddTest = 6.1/C-0-2
TEST(dso,dex_file_offsets)213 TEST(dso, dex_file_offsets) {
214   std::unique_ptr<Dso> dso = Dso::CreateDso(DSO_DEX_FILE, "");
215   ASSERT_TRUE(dso);
216   for (uint64_t offset : {0x3, 0x1, 0x5, 0x4, 0x2, 0x4, 0x3}) {
217     dso->AddDexFileOffset(offset);
218   }
219   ASSERT_EQ(*dso->DexFileOffsets(), std::vector<uint64_t>({0x1, 0x2, 0x3, 0x4, 0x5}));
220 }
221 
222 // @CddTest = 6.1/C-0-2
TEST(dso,embedded_elf)223 TEST(dso, embedded_elf) {
224   const std::string file_path = GetUrlInApk(GetTestData(APK_FILE), NATIVELIB_IN_APK);
225   std::unique_ptr<Dso> dso = Dso::CreateDso(DSO_ELF_FILE, file_path);
226   ASSERT_TRUE(dso);
227   ASSERT_EQ(dso->Path(), file_path);
228   ASSERT_EQ(dso->GetDebugFilePath(), file_path);
229   uint64_t min_vaddr;
230   uint64_t file_offset_of_min_vaddr;
231   dso->GetMinExecutableVaddr(&min_vaddr, &file_offset_of_min_vaddr);
232   ASSERT_EQ(min_vaddr, 0);
233   ASSERT_EQ(file_offset_of_min_vaddr, 0);
234   const Symbol* symbol = dso->FindSymbol(0x9a4);
235   ASSERT_TRUE(symbol != nullptr);
236   ASSERT_STREQ(symbol->Name(), "Java_com_example_hellojni_HelloJni_callFunc1");
237   BuildId build_id;
238   ASSERT_TRUE(GetBuildIdFromDsoPath(file_path, &build_id));
239   ASSERT_EQ(build_id, native_lib_build_id);
240 }
241 
242 // @CddTest = 6.1/C-0-2
TEST(dso,IpToVaddrInFile)243 TEST(dso, IpToVaddrInFile) {
244   std::unique_ptr<Dso> dso = Dso::CreateDso(DSO_ELF_FILE, GetTestData("libc.so"));
245   ASSERT_TRUE(dso);
246   ASSERT_EQ(0xa5140, dso->IpToVaddrInFile(0xe9201140, 0xe9201000, 0xa5000));
247 }
248 
249 // @CddTest = 6.1/C-0-2
TEST(dso,kernel_address_randomization)250 TEST(dso, kernel_address_randomization) {
251   // Use ELF_FILE as a fake kernel vmlinux.
252   const std::string vmlinux_path = GetTestData(ELF_FILE);
253   Dso::SetVmlinux(vmlinux_path);
254   std::unique_ptr<Dso> dso = Dso::CreateDso(DSO_KERNEL, DEFAULT_KERNEL_MMAP_NAME);
255   ASSERT_TRUE(dso);
256   ASSERT_EQ(dso->GetDebugFilePath(), vmlinux_path);
257   // When map_start = 0, can't fix kernel address randomization. So vmlinux isn't used.
258   ASSERT_EQ(dso->IpToVaddrInFile(0x800500, 0, 0), 0x800500);
259   ASSERT_FALSE(dso->IpToFileOffset(0x800500, 0, 0));
260   ASSERT_TRUE(dso->FindSymbol(0x400510) == nullptr);
261 
262   dso = Dso::CreateDso(DSO_KERNEL, DEFAULT_KERNEL_MMAP_NAME);
263   ASSERT_TRUE(dso);
264   ASSERT_EQ(dso->GetDebugFilePath(), vmlinux_path);
265   // When map_start != 0, can fix kernel address randomization. So vmlinux is used.
266   ASSERT_EQ(dso->IpToVaddrInFile(0x800500, 0x800400, 0), 0x400500);
267   ASSERT_EQ(dso->IpToFileOffset(0x800500, 0x800400, 0).value(), 0x500);
268   const Symbol* symbol = dso->FindSymbol(0x400510);
269   ASSERT_TRUE(symbol != nullptr);
270   ASSERT_STREQ(symbol->Name(), "GlobalFunc");
271 }
272 
273 // @CddTest = 6.1/C-0-2
TEST(dso,find_vmlinux_in_symdirs)274 TEST(dso, find_vmlinux_in_symdirs) {
275   // Create a symdir.
276   TemporaryDir tmpdir;
277   std::string vmlinux_path = std::string(tmpdir.path) + OS_PATH_SEPARATOR + "elf";
278   std::string data;
279   ASSERT_TRUE(android::base::ReadFileToString(GetTestData(ELF_FILE), &data));
280   ASSERT_TRUE(android::base::WriteStringToFile(data, vmlinux_path));
281 
282   // Find vmlinux in symbol dirs.
283   Dso::SetVmlinux("");
284   Dso::AddSymbolDir(tmpdir.path);
285   Dso::SetBuildIds({std::make_pair(DEFAULT_KERNEL_MMAP_NAME, BuildId(ELF_FILE_BUILD_ID))});
286   std::unique_ptr<Dso> dso = Dso::CreateDso(DSO_KERNEL, DEFAULT_KERNEL_MMAP_NAME);
287   ASSERT_TRUE(dso);
288   ASSERT_EQ(dso->GetDebugFilePath(), vmlinux_path);
289   ASSERT_EQ(0x400927, dso->IpToVaddrInFile(0x800527, 0x800000, 0));
290 
291   // Find vmlinux by CreateDsoWithBuildId.
292   Dso::SetBuildIds({});
293   BuildId build_id(ELF_FILE_BUILD_ID);
294   dso = Dso::CreateDsoWithBuildId(DSO_KERNEL, DEFAULT_KERNEL_MMAP_NAME, build_id);
295   ASSERT_TRUE(dso);
296   ASSERT_EQ(dso->GetDebugFilePath(), vmlinux_path);
297   ASSERT_EQ(0x400927, dso->IpToVaddrInFile(0x800527, 0x800000, 0));
298 }
299 
300 // @CddTest = 6.1/C-0-2
TEST(dso,kernel_module)301 TEST(dso, kernel_module) {
302   // Test finding debug files for kernel modules.
303   Dso::SetSymFsDir(GetTestDataDir());
304   std::vector<std::pair<std::string, BuildId>> build_ids;
305   build_ids.emplace_back(ELF_FILE, BuildId(ELF_FILE_BUILD_ID));
306   Dso::SetBuildIds(build_ids);
307   std::unique_ptr<Dso> kernel_dso = Dso::CreateDso(DSO_KERNEL, DEFAULT_KERNEL_MMAP_NAME);
308   ASSERT_TRUE(kernel_dso);
309   std::unique_ptr<Dso> dso = Dso::CreateKernelModuleDso(ELF_FILE, 0, 0, kernel_dso.get());
310   ASSERT_EQ(dso->GetDebugFilePath(), GetTestData(ELF_FILE));
311 }
312 
313 // @CddTest = 6.1/C-0-2
TEST(dso,kernel_module_CalculateMinVaddr)314 TEST(dso, kernel_module_CalculateMinVaddr) {
315   // Create fake Dso objects.
316   auto kernel_dso = Dso::CreateDso(DSO_KERNEL, DEFAULT_KERNEL_MMAP_NAME);
317   ASSERT_TRUE(kernel_dso);
318   const uint64_t module_memory_start = 0xffffffa9bc790000ULL;
319   const uint64_t module_memory_size = 0x8d7000ULL;
320   TemporaryFile tmpfile;
321   auto module_dso =
322       Dso::CreateKernelModuleDso(tmpfile.path, module_memory_start,
323                                  module_memory_start + module_memory_size, kernel_dso.get());
324   ASSERT_TRUE(module_dso);
325 
326   // Provide symbol info for calculating min vaddr.
327   std::vector<Symbol> kernel_symbols;
328   kernel_symbols.emplace_back("fake_module_function [fake_module]", 0xffffffa9bc7a64e8ULL, 0x60c);
329   kernel_dso->SetSymbols(&kernel_symbols);
330   std::vector<Symbol> module_symbols;
331   module_symbols.emplace_back("fake_module_function", 0x144e8, 0x60c);
332   module_dso->SetSymbols(&module_symbols);
333 
334   // Calculate min vaddr.
335   uint64_t min_vaddr;
336   uint64_t memory_offset;
337   module_dso->GetMinExecutableVaddr(&min_vaddr, &memory_offset);
338   ASSERT_EQ(min_vaddr, 0x144e8);
339   ASSERT_EQ(memory_offset, 0x164e8);
340 
341   // Use min vaddr in IpToVaddrInFile().
342   ASSERT_EQ(module_dso->IpToVaddrInFile(0xffffffa9bc7a64e8ULL, module_memory_start, 0), 0x144e8);
343 }
344 
345 // @CddTest = 6.1/C-0-2
TEST(dso,symbol_map_file)346 TEST(dso, symbol_map_file) {
347   auto dso = Dso::CreateDso(DSO_SYMBOL_MAP_FILE, "perf-123.map");
348   ASSERT_TRUE(dso);
349   ASSERT_EQ(DSO_SYMBOL_MAP_FILE, dso->type());
350   ASSERT_EQ(0x12345678, dso->IpToVaddrInFile(0x12345678, 0x0, 0x0));
351   ASSERT_EQ(0x12345678, dso->IpToVaddrInFile(0x12345678, 0xe9201000, 0xa5000));
352 }
353 
354 // @CddTest = 6.1/C-0-2
TEST(dso,FunctionName)355 TEST(dso, FunctionName) {
356   Symbol symbol = Symbol("void ctep.v(cteo, ctgc, ctbn)", 0x0, 0x1);
357   ASSERT_EQ(symbol.FunctionName(), "ctep.v");
358   symbol = Symbol("ctep.v(cteo, ctgc, ctbn)", 0x0, 0x1);
359   ASSERT_EQ(symbol.FunctionName(), "ctep.v");
360   symbol = Symbol("ctep.v", 0x0, 0x1);
361   ASSERT_EQ(symbol.FunctionName(), "ctep.v");
362 }
363 
364 // @CddTest = 6.1/C-0-2
TEST(dso,search_debug_file_only_when_needed)365 TEST(dso, search_debug_file_only_when_needed) {
366   Dso::SetBuildIds({std::make_pair("/elf", BuildId("1b12a384a9f4a3f3659b7171ca615dbec3a81f71"))});
367   Dso::SetSymFsDir(GetTestDataDir());
368   CapturedStderr capture;
369   auto dso = Dso::CreateDso(DSO_ELF_FILE, "/elf");
370   ASSERT_EQ(capture.str().find("build id mismatch"), std::string::npos);
371   ASSERT_EQ(dso->GetDebugFilePath(), "/elf");
372   ASSERT_NE(capture.str().find("build id mismatch"), std::string::npos);
373   capture.Stop();
374 }
375 
376 // @CddTest = 6.1/C-0-2
TEST(dso,read_symbol_warning)377 TEST(dso, read_symbol_warning) {
378   {
379     // Don't warn when the file may not be an ELF file.
380     auto dso = Dso::CreateDso(DSO_ELF_FILE, GetTestData("not_exist_file"));
381     CapturedStderr capture;
382     dso->LoadSymbols();
383     ASSERT_EQ(capture.str().find("failed to read symbols"), std::string::npos);
384   }
385   {
386     // Don't warn when the file may not be an ELF file.
387     auto dso = Dso::CreateDso(DSO_ELF_FILE, GetTestData("base.vdex"));
388     CapturedStderr capture;
389     dso->LoadSymbols();
390     ASSERT_EQ(capture.str().find("failed to read symbols"), std::string::npos);
391   }
392   {
393     // Warn when the file is an ELF file (having a build id).
394     std::string file_path = GetTestData("not_exist_file");
395     Dso::SetBuildIds(
396         {std::make_pair(file_path, BuildId("1b12a384a9f4a3f3659b7171ca615dbec3a81f71"))});
397     auto dso = Dso::CreateDso(DSO_ELF_FILE, file_path);
398     CapturedStderr capture;
399     dso->LoadSymbols();
400     ASSERT_NE(capture.str().find("failed to read symbols"), std::string::npos);
401   }
402   {
403     // Don't warn when we already have symbols.
404     std::string file_path = GetTestData("not_exist_file");
405     Dso::SetBuildIds(
406         {std::make_pair(file_path, BuildId("1b12a384a9f4a3f3659b7171ca615dbec3a81f71"))});
407     auto dso = Dso::CreateDso(DSO_ELF_FILE, file_path);
408     std::vector<Symbol> symbols;
409     symbols.emplace_back("fake_symbol", 0x1234, 0x60);
410     dso->SetSymbols(&symbols);
411     CapturedStderr capture;
412     dso->LoadSymbols();
413     ASSERT_EQ(capture.str().find("failed to read symbols"), std::string::npos);
414   }
415 }
416 
417 // @CddTest = 6.1/C-0-2
TEST(dso,demangle)418 TEST(dso, demangle) {
419   ASSERT_EQ(Dso::Demangle("main"), "main");
420   ASSERT_EQ(Dso::Demangle("_ZN4main4main17h2a68d4d833d7495aE"), "main::main::h2a68d4d833d7495a");
421 #if defined(__linux__) || defined(__darwin__)
422   // Demangling rust symbol is only supported on linux and darwin.
423   ASSERT_EQ(Dso::Demangle("_RNvC6_123foo3bar"), "123foo::bar");
424 #endif
425 }
426