| 39 | }; |
| 40 | |
| 41 | int dladdr(const void* address_raw, Dl_info* info) noexcept { |
| 42 | static constexpr std::size_t dl_buff_size = 0x1000; |
| 43 | |
| 44 | try { |
| 45 | std::vector<struct ld_info> pld_info_storage; |
| 46 | pld_info_storage.resize( |
| 47 | (dl_buff_size + sizeof(struct ld_info) - 1) / sizeof(struct ld_info) |
| 48 | ); |
| 49 | |
| 50 | if (loadquery(L_GETINFO, pld_info_storage.data(), dl_buff_size) == -1) { |
| 51 | return 0; |
| 52 | } |
| 53 | |
| 54 | const auto* pld_info = pld_info_storage.data(); |
| 55 | const char* const address = static_cast<const char*>(address_raw); |
| 56 | while (true) { |
| 57 | const auto* const dataorg = static_cast<char*>(pld_info->ldinfo_dataorg); |
| 58 | const auto* const textorg = static_cast<char*>(pld_info->ldinfo_textorg); |
| 59 | if ((address >= dataorg && address < dataorg + pld_info->ldinfo_datasize ) |
| 60 | || (address >= textorg && address < textorg + pld_info->ldinfo_textsize )) { |
| 61 | |
| 62 | /* ldinfo_filename is the null-terminated path name followed |
| 63 | by null-terminated member name. |
| 64 | If the file is not an archive, then member name is null. */ |
| 65 | const auto size_filename = std::strlen(pld_info->ldinfo_filename); |
| 66 | const auto size_member = std::strlen(pld_info->ldinfo_filename + size_filename + 1); |
| 67 | |
| 68 | /* If member is not null, '(' and ')' must be added to create a |
| 69 | fname looking like "filename(membername)". */ |
| 70 | info->fname_storage.reserve(size_filename + (size_member ? size_member + 3 : 1)); |
| 71 | info->fname_storage = pld_info->ldinfo_filename; |
| 72 | if (size_member) { |
| 73 | info->fname_storage += "("; |
| 74 | info->fname_storage += pld_info->ldinfo_filename + size_filename + 1; |
| 75 | info->fname_storage += ")"; |
| 76 | } |
| 77 | |
| 78 | info->dli_fname = info->fname_storage.c_str(); |
| 79 | return 1; |
| 80 | } |
| 81 | |
| 82 | if (!pld_info->ldinfo_next) { |
| 83 | break; |
| 84 | } |
| 85 | |
| 86 | pld_info = reinterpret_cast<const struct ld_info *>( |
| 87 | reinterpret_cast<const char*>(pld_info) + pld_info->ldinfo_next |
| 88 | ); |
| 89 | }; |
| 90 | } catch (...) { |
| 91 | // ignore |
| 92 | } |
| 93 | |
| 94 | return 0; |
| 95 | } |
| 96 | |
| 97 | }}} // namespace boost::stacktrace::detail |
| 98 |
no outgoing calls
no test coverage detected