! * \brief demangle ABI-mandated entry point in the * C++ runtime library for demangling * \param value backtrace string * \return demangled value */
| 27 | * \return demangled value |
| 28 | */ |
| 29 | static std::string demangle(void *value) |
| 30 | { |
| 31 | if (!value) |
| 32 | return ""; |
| 33 | |
| 34 | std::ostringstream ostream; |
| 35 | ostream.imbue(std::locale::classic()); |
| 36 | ostream << value << " : "; |
| 37 | Dl_info info = { nullptr, nullptr, nullptr, nullptr }; |
| 38 | if (dladdr(value, &info) == 0) { |
| 39 | ostream << "???"; |
| 40 | } else { |
| 41 | if (info.dli_sname) { |
| 42 | int status = 0; |
| 43 | char *demangledName = abi::__cxa_demangle(info.dli_sname, nullptr, nullptr, &status); |
| 44 | if (demangledName) { |
| 45 | ostream << demangledName; |
| 46 | free(demangledName); |
| 47 | } else { |
| 48 | ostream << info.dli_sname; |
| 49 | } |
| 50 | } else { |
| 51 | ostream << "???"; |
| 52 | } |
| 53 | |
| 54 | long offset = reinterpret_cast<char *>(value) - reinterpret_cast<char *>(info.dli_saddr); |
| 55 | ostream << std::hex << " + 0x" << offset; |
| 56 | |
| 57 | if (info.dli_fname) |
| 58 | ostream << " @ " << info.dli_fname; |
| 59 | } |
| 60 | return ostream.str(); |
| 61 | } |
| 62 | |
| 63 | static void printStack(void *frames[], int numFrames) |
| 64 | { |