void TracePC::PrintNewPCs() {
if (!DoPrintNewPCs) return;
assert(PrintedPCs);
for (size_t i = 1; i < GetNumPCs(); i++)
if (PCs()[i] && PrintedPCs->insert(PCs()[i]).second)
PrintPC("\tNEW_PC: %p %F %L\n", "\tNEW_PC: %p\n", PCs()[i]);
}
void TracePC::DumpCoverage() {
if (EF->__sanitizer_dump_coverage) {
std::vector<uintptr_t> PCsCopy(GetNumPCs());
for (size_t i = 0; i < GetNumPCs(); i++)
PCsCopy[i] = PCs()[i] ? GetPreviousInstructionPc(PCs()[i]) : 0;
EF->__sanitizer_dump_coverage(PCsCopy.data(), PCsCopy.size());
}
}
void TracePC::InitializePrintNewPCs() {
if (!DoPrintNewPCs) return;
assert(!PrintedPCs);
PrintedPCs = new std::set<uintptr_t>;
for (size_t i = 1; i < GetNumPCs(); i++)
if (PCs()[i])
PrintedPCs->insert(PCs()[i]);
}
size_t TracePC::GetTotalPCCoverage() {
size_t Res = 0;
for (size_t i = 1, N = GetNumPCs(); i < N; i++)
if (PCs()[i])
Res++;
return Res;
}
size_t TracePC::GetTotalPCCoverage() {
if (ObservedPCs.size())
return ObservedPCs.size();
size_t Res = 0;
for (size_t i = 1, N = GetNumPCs(); i < N; i++)
if (PCs()[i])
Res++;
return Res;
}
void TracePC::PrintCoverage() {
if (!EF->__sanitizer_symbolize_pc ||
!EF->__sanitizer_get_module_and_offset_for_pc) {
Printf("INFO: __sanitizer_symbolize_pc or "
"__sanitizer_get_module_and_offset_for_pc is not available,"
" not printing coverage\n");
return;
}
std::map<std::string, std::vector<uintptr_t>> CoveredPCsPerModule;
std::map<std::string, uintptr_t> ModuleOffsets;
std::set<std::string> CoveredDirs, CoveredFiles, CoveredFunctions,
CoveredLines;
Printf("COVERAGE:\n");
for (size_t i = 1; i < GetNumPCs(); i++) {
uintptr_t PC = PCs()[i];
if (!PC) continue;
std::string FileStr = DescribePC("%s", PC);
if (!IsInterestingCoverageFile(FileStr)) continue;
std::string FixedPCStr = DescribePC("%p", PC);
std::string FunctionStr = DescribePC("%F", PC);
std::string LineStr = DescribePC("%l", PC);
char ModulePathRaw[4096] = ""; // What's PATH_MAX in portable C++?
void *OffsetRaw = nullptr;
if (!EF->__sanitizer_get_module_and_offset_for_pc(
reinterpret_cast<void *>(PC), ModulePathRaw,
sizeof(ModulePathRaw), &OffsetRaw))
continue;
std::string Module = ModulePathRaw;
uintptr_t FixedPC = std::stoull(FixedPCStr, 0, 16);
uintptr_t PcOffset = reinterpret_cast<uintptr_t>(OffsetRaw);
ModuleOffsets[Module] = FixedPC - PcOffset;
CoveredPCsPerModule[Module].push_back(PcOffset);
CoveredFunctions.insert(FunctionStr);
CoveredFiles.insert(FileStr);
CoveredDirs.insert(DirName(FileStr));
if (!CoveredLines.insert(FileStr + ":" + LineStr).second)
continue;
Printf("COVERED: %s %s:%s\n", FunctionStr.c_str(),
FileStr.c_str(), LineStr.c_str());
}
std::string CoveredDirsStr;
for (auto &Dir : CoveredDirs) {
if (!CoveredDirsStr.empty())
CoveredDirsStr += ",";
CoveredDirsStr += Dir;
}
Printf("COVERED_DIRS: %s\n", CoveredDirsStr.c_str());
for (auto &M : CoveredPCsPerModule) {
std::set<std::string> UncoveredFiles, UncoveredFunctions;
std::map<std::string, std::set<int> > UncoveredLines; // Func+File => lines
auto &ModuleName = M.first;
auto &CoveredOffsets = M.second;
uintptr_t ModuleOffset = ModuleOffsets[ModuleName];
std::sort(CoveredOffsets.begin(), CoveredOffsets.end());
Printf("MODULE_WITH_COVERAGE: %s\n", ModuleName.c_str());
// sancov does not yet fully support DSOs.
// std::string Cmd = "sancov -print-coverage-pcs " + ModuleName;
std::string Cmd = DisassembleCmd(ModuleName) + " | " +
SearchRegexCmd("call.*__sanitizer_cov_trace_pc_guard");
std::string SanCovOutput;
if (!ExecuteCommandAndReadOutput(Cmd, &SanCovOutput)) {
Printf("INFO: Command failed: %s\n", Cmd.c_str());
continue;
}
std::istringstream ISS(SanCovOutput);
std::string S;
while (std::getline(ISS, S, '\n')) {
size_t PcOffsetEnd = S.find(':');
if (PcOffsetEnd == std::string::npos)
continue;
S.resize(PcOffsetEnd);
uintptr_t PcOffset = std::stoull(S, 0, 16);
if (!std::binary_search(CoveredOffsets.begin(), CoveredOffsets.end(),
PcOffset)) {
uintptr_t PC = ModuleOffset + PcOffset;
auto FileStr = DescribePC("%s", PC);
if (!IsInterestingCoverageFile(FileStr)) continue;
if (CoveredFiles.count(FileStr) == 0) {
UncoveredFiles.insert(FileStr);
continue;
}
auto FunctionStr = DescribePC("%F", PC);
if (CoveredFunctions.count(FunctionStr) == 0) {
UncoveredFunctions.insert(FunctionStr);
continue;
}
std::string LineStr = DescribePC("%l", PC);
uintptr_t Line = std::stoi(LineStr);
std::string FileLineStr = FileStr + ":" + LineStr;
if (CoveredLines.count(FileLineStr) == 0)
UncoveredLines[FunctionStr + " " + FileStr].insert(Line);
}
}
for (auto &FileLine: UncoveredLines)
for (int Line : FileLine.second)
Printf("UNCOVERED_LINE: %s:%d\n", FileLine.first.c_str(), Line);
for (auto &Func : UncoveredFunctions)
Printf("UNCOVERED_FUNC: %s\n", Func.c_str());
for (auto &File : UncoveredFiles)
Printf("UNCOVERED_FILE: %s\n", File.c_str());
}
}
