Merge "Ziparchive: Enable -Wconversion"
diff --git a/libziparchive/Android.bp b/libziparchive/Android.bp
index bc1543b..858c0bb 100644
--- a/libziparchive/Android.bp
+++ b/libziparchive/Android.bp
@@ -26,6 +26,8 @@
// Incorrectly warns when C++11 empty brace {} initializer is used.
// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61489
"-Wno-missing-field-initializers",
+ "-Wconversion",
+ "-Wno-sign-conversion",
],
// Enable -Wold-style-cast only for non-Windows targets. _islower_l,
diff --git a/libziparchive/entry_name_utils-inl.h b/libziparchive/entry_name_utils-inl.h
index 1714586..10311b5 100644
--- a/libziparchive/entry_name_utils-inl.h
+++ b/libziparchive/entry_name_utils-inl.h
@@ -20,9 +20,15 @@
#include <stddef.h>
#include <stdint.h>
+#include <limits>
+
// Check if |length| bytes at |entry_name| constitute a valid entry name.
-// Entry names must be valid UTF-8 and must not contain '0'.
+// Entry names must be valid UTF-8 and must not contain '0'. They also must
+// fit into the central directory record.
inline bool IsValidEntryName(const uint8_t* entry_name, const size_t length) {
+ if (length > std::numeric_limits<uint16_t>::max()) {
+ return false;
+ }
for (size_t i = 0; i < length; ++i) {
const uint8_t byte = entry_name[i];
if (byte == 0) {
@@ -35,7 +41,8 @@
return false;
} else {
// 2-5 byte sequences.
- for (uint8_t first = (byte & 0x7f) << 1; first & 0x80; first = (first & 0x7f) << 1) {
+ for (uint8_t first = static_cast<uint8_t>((byte & 0x7f) << 1); first & 0x80;
+ first = static_cast<uint8_t>((first & 0x7f) << 1)) {
++i;
// Missing continuation byte..
diff --git a/libziparchive/include/ziparchive/zip_writer.h b/libziparchive/include/ziparchive/zip_writer.h
index f6c8427..bd44fdb 100644
--- a/libziparchive/include/ziparchive/zip_writer.h
+++ b/libziparchive/include/ziparchive/zip_writer.h
@@ -76,7 +76,7 @@
uint32_t uncompressed_size;
uint16_t last_mod_time;
uint16_t last_mod_date;
- uint32_t padding_length;
+ uint16_t padding_length;
off64_t local_file_header_offset;
};
@@ -161,8 +161,8 @@
int32_t HandleError(int32_t error_code);
int32_t PrepareDeflate();
- int32_t StoreBytes(FileEntry* file, const void* data, size_t len);
- int32_t CompressBytes(FileEntry* file, const void* data, size_t len);
+ int32_t StoreBytes(FileEntry* file, const void* data, uint32_t len);
+ int32_t CompressBytes(FileEntry* file, const void* data, uint32_t len);
int32_t FlushCompressedBytes(FileEntry* file);
enum class State {
diff --git a/libziparchive/unzip.cpp b/libziparchive/unzip.cpp
index cc059d8..c6def73 100644
--- a/libziparchive/unzip.cpp
+++ b/libziparchive/unzip.cpp
@@ -85,7 +85,7 @@
static int CompressionRatio(int64_t uncompressed, int64_t compressed) {
if (uncompressed == 0) return 0;
- return (100LL * (uncompressed - compressed)) / uncompressed;
+ return static_cast<int>((100LL * (uncompressed - compressed)) / uncompressed);
}
static void MaybeShowHeader() {
diff --git a/libziparchive/zip_archive.cc b/libziparchive/zip_archive.cc
index e1ec47a..596786a 100644
--- a/libziparchive/zip_archive.cc
+++ b/libziparchive/zip_archive.cc
@@ -146,7 +146,7 @@
/*
* Add a new entry to the hash table.
*/
-static int32_t AddToHash(ZipStringOffset* hash_table, const uint64_t hash_table_size,
+static int32_t AddToHash(ZipStringOffset* hash_table, const uint32_t hash_table_size,
const ZipString& name, const uint8_t* start) {
const uint64_t hash = ComputeHash(name);
uint32_t ent = hash & (hash_table_size - 1);
@@ -214,7 +214,7 @@
}
static int32_t MapCentralDirectory0(const char* debug_file_name, ZipArchive* archive,
- off64_t file_length, off64_t read_amount,
+ off64_t file_length, uint32_t read_amount,
uint8_t* scan_buffer) {
const off64_t search_start = file_length - read_amount;
@@ -230,7 +230,8 @@
* doing an initial minimal read; if we don't find it, retry with a
* second read as above.)
*/
- int i = read_amount - sizeof(EocdRecord);
+ CHECK_LE(read_amount, std::numeric_limits<int32_t>::max());
+ int32_t i = read_amount - sizeof(EocdRecord);
for (; i >= 0; i--) {
if (scan_buffer[i] == 0x50) {
uint32_t* sig_addr = reinterpret_cast<uint32_t*>(&scan_buffer[i]);
@@ -333,9 +334,9 @@
*
* We start by pulling in the last part of the file.
*/
- off64_t read_amount = kMaxEOCDSearch;
+ uint32_t read_amount = kMaxEOCDSearch;
if (file_length < read_amount) {
- read_amount = file_length;
+ read_amount = static_cast<uint32_t>(file_length);
}
std::vector<uint8_t> scan_buffer(read_amount);
@@ -532,7 +533,7 @@
return 0;
}
-static int32_t FindEntry(const ZipArchive* archive, const int ent, ZipEntry* data) {
+static int32_t FindEntry(const ZipArchive* archive, const int32_t ent, ZipEntry* data) {
const uint16_t nameLen = archive->hash_table[ent].name_length;
// Recover the start of the central directory entry from the filename
@@ -751,9 +752,10 @@
archive->central_directory.GetBasePtr());
if (ent < 0) {
ALOGV("Zip: Could not find entry %.*s", entryName.name_length, entryName.name);
- return ent;
+ return static_cast<int32_t>(ent); // kEntryNotFound is safe to truncate.
}
- return FindEntry(archive, ent, data);
+ // We know there are at most hast_table_size entries, safe to truncate.
+ return FindEntry(archive, static_cast<uint32_t>(ent), data);
}
int32_t Next(void* cookie, ZipEntry* data, ZipString* name) {
@@ -836,7 +838,6 @@
return FileWriter{};
}
- int result = 0;
#if defined(__linux__)
if (declared_length > 0) {
// Make sure we have enough space on the volume to extract the compressed
@@ -848,7 +849,7 @@
// EOPNOTSUPP error when issued in other filesystems.
// Hence, check for the return error code before concluding that the
// disk does not have enough space.
- result = TEMP_FAILURE_RETRY(fallocate(fd, 0, current_offset, declared_length));
+ long result = TEMP_FAILURE_RETRY(fallocate(fd, 0, current_offset, declared_length));
if (result == -1 && errno == ENOSPC) {
ALOGW("Zip: unable to allocate %" PRId64 " bytes at offset %" PRId64 ": %s",
static_cast<int64_t>(declared_length), static_cast<int64_t>(current_offset),
@@ -866,7 +867,7 @@
// Block device doesn't support ftruncate(2).
if (!S_ISBLK(sb.st_mode)) {
- result = TEMP_FAILURE_RETRY(ftruncate(fd, declared_length + current_offset));
+ long result = TEMP_FAILURE_RETRY(ftruncate(fd, declared_length + current_offset));
if (result == -1) {
ALOGW("Zip: unable to truncate file to %" PRId64 ": %s",
static_cast<int64_t>(declared_length + current_offset), strerror(errno));
@@ -985,16 +986,16 @@
std::unique_ptr<z_stream, decltype(zstream_deleter)> zstream_guard(&zstream, zstream_deleter);
const bool compute_crc = (crc_out != nullptr);
- uint64_t crc = 0;
+ uLong crc = 0;
uint32_t remaining_bytes = compressed_length;
do {
/* read as much as we can */
if (zstream.avail_in == 0) {
- const size_t read_size = (remaining_bytes > kBufSize) ? kBufSize : remaining_bytes;
+ const uint32_t read_size = (remaining_bytes > kBufSize) ? kBufSize : remaining_bytes;
const uint32_t offset = (compressed_length - remaining_bytes);
// Make sure to read at offset to ensure concurrent access to the fd.
if (!reader.ReadAtOffset(read_buf.data(), read_size, offset)) {
- ALOGW("Zip: inflate read failed, getSize = %zu: %s", read_size, strerror(errno));
+ ALOGW("Zip: inflate read failed, getSize = %u: %s", read_size, strerror(errno));
return kIoError;
}
@@ -1018,7 +1019,8 @@
if (!writer->Append(&write_buf[0], write_size)) {
return kIoError;
} else if (compute_crc) {
- crc = crc32(crc, &write_buf[0], write_size);
+ DCHECK_LE(write_size, kBufSize);
+ crc = crc32(crc, &write_buf[0], static_cast<uint32_t>(write_size));
}
zstream.next_out = &write_buf[0];
@@ -1063,17 +1065,17 @@
const uint32_t length = entry->uncompressed_length;
uint32_t count = 0;
- uint64_t crc = 0;
+ uLong crc = 0;
while (count < length) {
uint32_t remaining = length - count;
off64_t offset = entry->offset + count;
// Safe conversion because kBufSize is narrow enough for a 32 bit signed value.
- const size_t block_size = (remaining > kBufSize) ? kBufSize : remaining;
+ const uint32_t block_size = (remaining > kBufSize) ? kBufSize : remaining;
// Make sure to read at offset to ensure concurrent access to the fd.
if (!mapped_zip.ReadAtOffset(buf.data(), block_size, offset)) {
- ALOGW("CopyFileToFile: copy read failed, block_size = %zu, offset = %" PRId64 ": %s",
+ ALOGW("CopyFileToFile: copy read failed, block_size = %u, offset = %" PRId64 ": %s",
block_size, static_cast<int64_t>(offset), strerror(errno));
return kIoError;
}
diff --git a/libziparchive/zip_archive_stream_entry.cc b/libziparchive/zip_archive_stream_entry.cc
index 9ec89b1..1ec95b6 100644
--- a/libziparchive/zip_archive_stream_entry.cc
+++ b/libziparchive/zip_archive_stream_entry.cc
@@ -27,6 +27,7 @@
#include <vector>
#include <android-base/file.h>
+#include <android-base/logging.h>
#include <log/log.h>
#include <ziparchive/zip_archive.h>
@@ -77,6 +78,12 @@
}
const std::vector<uint8_t>* ZipArchiveStreamEntryUncompressed::Read() {
+ // Simple sanity check. The vector should *only* be handled by this code. A caller
+ // should not const-cast and modify the capacity. This may invalidate next_out.
+ //
+ // Note: it would be better to store the results of data() across Read calls.
+ CHECK_EQ(data_.capacity(), kBufSize);
+
if (length_ == 0) {
return nullptr;
}
@@ -97,7 +104,8 @@
if (bytes < data_.size()) {
data_.resize(bytes);
}
- computed_crc32_ = crc32(computed_crc32_, data_.data(), data_.size());
+ computed_crc32_ = static_cast<uint32_t>(
+ crc32(computed_crc32_, data_.data(), static_cast<uint32_t>(data_.size())));
length_ -= bytes;
offset_ += bytes;
return &data_;
@@ -192,9 +200,15 @@
}
const std::vector<uint8_t>* ZipArchiveStreamEntryCompressed::Read() {
+ // Simple sanity check. The vector should *only* be handled by this code. A caller
+ // should not const-cast and modify the capacity. This may invalidate next_out.
+ //
+ // Note: it would be better to store the results of data() across Read calls.
+ CHECK_EQ(out_.capacity(), kBufSize);
+
if (z_stream_.avail_out == 0) {
z_stream_.next_out = out_.data();
- z_stream_.avail_out = out_.size();
+ z_stream_.avail_out = static_cast<uint32_t>(out_.size());
;
}
@@ -203,7 +217,9 @@
if (compressed_length_ == 0) {
return nullptr;
}
- size_t bytes = (compressed_length_ > in_.size()) ? in_.size() : compressed_length_;
+ DCHECK_LE(in_.size(), std::numeric_limits<uint32_t>::max()); // Should be buf size = 64k.
+ uint32_t bytes = (compressed_length_ > in_.size()) ? static_cast<uint32_t>(in_.size())
+ : compressed_length_;
ZipArchive* archive = reinterpret_cast<ZipArchive*>(handle_);
errno = 0;
if (!archive->mapped_zip.ReadAtOffset(in_.data(), bytes, offset_)) {
@@ -230,14 +246,16 @@
if (z_stream_.avail_out == 0) {
uncompressed_length_ -= out_.size();
- computed_crc32_ = crc32(computed_crc32_, out_.data(), out_.size());
+ computed_crc32_ = static_cast<uint32_t>(
+ crc32(computed_crc32_, out_.data(), static_cast<uint32_t>(out_.size())));
return &out_;
}
if (zerr == Z_STREAM_END) {
if (z_stream_.avail_out != 0) {
// Resize the vector down to the actual size of the data.
out_.resize(out_.size() - z_stream_.avail_out);
- computed_crc32_ = crc32(computed_crc32_, out_.data(), out_.size());
+ computed_crc32_ = static_cast<uint32_t>(
+ crc32(computed_crc32_, out_.data(), static_cast<uint32_t>(out_.size())));
uncompressed_length_ -= out_.size();
return &out_;
}
diff --git a/libziparchive/zip_archive_test.cc b/libziparchive/zip_archive_test.cc
index cea42d4..e471d5e 100644
--- a/libziparchive/zip_archive_test.cc
+++ b/libziparchive/zip_archive_test.cc
@@ -27,6 +27,7 @@
#include <vector>
#include <android-base/file.h>
+#include <android-base/logging.h>
#include <android-base/mapped_file.h>
#include <android-base/unique_fd.h>
#include <gtest/gtest.h>
@@ -65,7 +66,8 @@
static void SetZipString(ZipString* zip_str, const std::string& str) {
zip_str->name = reinterpret_cast<const uint8_t*>(str.c_str());
- zip_str->name_length = str.size();
+ CHECK_LE(str.size(), std::numeric_limits<uint16_t>::max());
+ zip_str->name_length = static_cast<uint16_t>(str.size());
}
TEST(ziparchive, Open) {
@@ -332,7 +334,7 @@
// Extract the entry to memory.
std::vector<uint8_t> buffer(kAbUncompressedSize);
- ASSERT_EQ(0, ExtractToMemory(handle, &entry, &buffer[0], buffer.size()));
+ ASSERT_EQ(0, ExtractToMemory(handle, &entry, &buffer[0], static_cast<uint32_t>(buffer.size())));
// Extract the entry to a file.
TemporaryFile tmp_output_file;
@@ -415,7 +417,8 @@
ASSERT_EQ(0, fstat(fd, &sb));
// Memory map the file first and open the archive from the memory region.
- auto file_map{android::base::MappedFile::FromFd(fd, 0, sb.st_size, PROT_READ)};
+ auto file_map{
+ android::base::MappedFile::FromFd(fd, 0, static_cast<size_t>(sb.st_size), PROT_READ)};
ZipArchiveHandle handle;
ASSERT_EQ(0,
OpenArchiveFromMemory(file_map->data(), file_map->size(), zip_path.c_str(), &handle));
@@ -488,7 +491,8 @@
std::vector<uint8_t> cmp_data(entry.uncompressed_length);
ASSERT_EQ(entry.uncompressed_length, read_data.size());
- ASSERT_EQ(0, ExtractToMemory(handle, &entry, cmp_data.data(), cmp_data.size()));
+ ASSERT_EQ(
+ 0, ExtractToMemory(handle, &entry, cmp_data.data(), static_cast<uint32_t>(cmp_data.size())));
ASSERT_TRUE(memcmp(read_data.data(), cmp_data.data(), read_data.size()) == 0);
CloseArchive(handle);
@@ -737,8 +741,8 @@
};
TEST(ziparchive, Inflate) {
- const uint32_t compressed_length = kATxtContentsCompressed.size();
- const uint32_t uncompressed_length = kATxtContents.size();
+ const uint32_t compressed_length = static_cast<uint32_t>(kATxtContentsCompressed.size());
+ const uint32_t uncompressed_length = static_cast<uint32_t>(kATxtContents.size());
const VectorReader reader(kATxtContentsCompressed);
{
diff --git a/libziparchive/zip_writer.cc b/libziparchive/zip_writer.cc
index 0df0fa5..ae9d145 100644
--- a/libziparchive/zip_writer.cc
+++ b/libziparchive/zip_writer.cc
@@ -169,8 +169,8 @@
year = 80;
}
- *out_date = (year - 80) << 9 | (ptm->tm_mon + 1) << 5 | ptm->tm_mday;
- *out_time = ptm->tm_hour << 11 | ptm->tm_min << 5 | ptm->tm_sec >> 1;
+ *out_date = static_cast<uint16_t>((year - 80) << 9 | (ptm->tm_mon + 1) << 5 | ptm->tm_mday);
+ *out_time = static_cast<uint16_t>(ptm->tm_hour << 11 | ptm->tm_min << 5 | ptm->tm_sec >> 1);
}
static void CopyFromFileEntry(const ZipWriter::FileEntry& src, bool use_data_descriptor,
@@ -193,7 +193,8 @@
dst->compression_method = src.compression_method;
dst->last_mod_time = src.last_mod_time;
dst->last_mod_date = src.last_mod_date;
- dst->file_name_length = src.path.size();
+ DCHECK_LE(src.path.size(), std::numeric_limits<uint16_t>::max());
+ dst->file_name_length = static_cast<uint16_t>(src.path.size());
dst->extra_field_length = src.padding_length;
}
@@ -203,6 +204,11 @@
return kInvalidState;
}
+ // Can only have 16535 entries because of zip records.
+ if (files_.size() == std::numeric_limits<uint16_t>::max()) {
+ return HandleError(kIoError);
+ }
+
if (flags & kAlign32) {
return kInvalidAlign32Flag;
}
@@ -210,10 +216,17 @@
if (powerof2(alignment) == 0) {
return kInvalidAlignment;
}
+ if (alignment > std::numeric_limits<uint16_t>::max()) {
+ return kInvalidAlignment;
+ }
FileEntry file_entry = {};
file_entry.local_file_header_offset = current_offset_;
file_entry.path = path;
+ // No support for larger than 4GB files.
+ if (file_entry.local_file_header_offset > std::numeric_limits<uint32_t>::max()) {
+ return HandleError(kIoError);
+ }
if (!IsValidEntryName(reinterpret_cast<const uint8_t*>(file_entry.path.data()),
file_entry.path.size())) {
@@ -237,7 +250,7 @@
std::vector<char> zero_padding;
if (alignment != 0 && (offset & (alignment - 1))) {
// Pad the extra field so the data will be aligned.
- uint16_t padding = alignment - (offset % alignment);
+ uint16_t padding = static_cast<uint16_t>(alignment - (offset % alignment));
file_entry.padding_length = padding;
offset += padding;
zero_padding.resize(padding, 0);
@@ -314,7 +327,8 @@
}
z_stream_->next_out = buffer_.data();
- z_stream_->avail_out = buffer_.size();
+ DCHECK_EQ(buffer_.size(), kBufSize);
+ z_stream_->avail_out = static_cast<uint32_t>(buffer_.size());
return kNoError;
}
@@ -322,25 +336,31 @@
if (state_ != State::kWritingEntry) {
return HandleError(kInvalidState);
}
+ // Need to be able to mark down data correctly.
+ if (len + static_cast<uint64_t>(current_file_entry_.uncompressed_size) >
+ std::numeric_limits<uint32_t>::max()) {
+ return HandleError(kIoError);
+ }
+ uint32_t len32 = static_cast<uint32_t>(len);
int32_t result = kNoError;
if (current_file_entry_.compression_method & kCompressDeflated) {
- result = CompressBytes(¤t_file_entry_, data, len);
+ result = CompressBytes(¤t_file_entry_, data, len32);
} else {
- result = StoreBytes(¤t_file_entry_, data, len);
+ result = StoreBytes(¤t_file_entry_, data, len32);
}
if (result != kNoError) {
return result;
}
- current_file_entry_.crc32 =
- crc32(current_file_entry_.crc32, reinterpret_cast<const Bytef*>(data), len);
- current_file_entry_.uncompressed_size += len;
+ current_file_entry_.crc32 = static_cast<uint32_t>(
+ crc32(current_file_entry_.crc32, reinterpret_cast<const Bytef*>(data), len32));
+ current_file_entry_.uncompressed_size += len32;
return kNoError;
}
-int32_t ZipWriter::StoreBytes(FileEntry* file, const void* data, size_t len) {
+int32_t ZipWriter::StoreBytes(FileEntry* file, const void* data, uint32_t len) {
CHECK(state_ == State::kWritingEntry);
if (fwrite(data, 1, len, file_) != len) {
@@ -351,7 +371,7 @@
return kNoError;
}
-int32_t ZipWriter::CompressBytes(FileEntry* file, const void* data, size_t len) {
+int32_t ZipWriter::CompressBytes(FileEntry* file, const void* data, uint32_t len) {
CHECK(state_ == State::kWritingEntry);
CHECK(z_stream_);
CHECK(z_stream_->next_out != nullptr);
@@ -379,7 +399,8 @@
// Reset the output buffer for the next input.
z_stream_->next_out = buffer_.data();
- z_stream_->avail_out = buffer_.size();
+ DCHECK_EQ(buffer_.size(), kBufSize);
+ z_stream_->avail_out = static_cast<uint32_t>(buffer_.size());
}
}
return kNoError;
@@ -404,7 +425,8 @@
current_offset_ += write_bytes;
z_stream_->next_out = buffer_.data();
- z_stream_->avail_out = buffer_.size();
+ DCHECK_EQ(buffer_.size(), kBufSize);
+ z_stream_->avail_out = static_cast<uint32_t>(buffer_.size());
}
if (zerr != Z_STREAM_END) {
return HandleError(kZlibError);
@@ -491,7 +513,11 @@
cdr.crc32 = file.crc32;
cdr.compressed_size = file.compressed_size;
cdr.uncompressed_size = file.uncompressed_size;
- cdr.file_name_length = file.path.size();
+ // Checked in IsValidEntryName.
+ DCHECK_LE(file.path.size(), std::numeric_limits<uint16_t>::max());
+ cdr.file_name_length = static_cast<uint16_t>(file.path.size());
+ // Checked in StartAlignedEntryWithTime.
+ DCHECK_LE(file.local_file_header_offset, std::numeric_limits<uint32_t>::max());
cdr.local_file_header_offset = static_cast<uint32_t>(file.local_file_header_offset);
if (fwrite(&cdr, sizeof(cdr), 1, file_) != 1) {
return HandleError(kIoError);
@@ -508,10 +534,15 @@
er.eocd_signature = EocdRecord::kSignature;
er.disk_num = 0;
er.cd_start_disk = 0;
- er.num_records_on_disk = files_.size();
- er.num_records = files_.size();
- er.cd_size = current_offset_ - startOfCdr;
- er.cd_start_offset = startOfCdr;
+ // Checked when adding entries.
+ DCHECK_LE(files_.size(), std::numeric_limits<uint16_t>::max());
+ er.num_records_on_disk = static_cast<uint16_t>(files_.size());
+ er.num_records = static_cast<uint16_t>(files_.size());
+ if (current_offset_ > std::numeric_limits<uint32_t>::max()) {
+ return HandleError(kIoError);
+ }
+ er.cd_size = static_cast<uint32_t>(current_offset_ - startOfCdr);
+ er.cd_start_offset = static_cast<uint32_t>(startOfCdr);
if (fwrite(&er, sizeof(er), 1, file_) != 1) {
return HandleError(kIoError);
diff --git a/libziparchive/zip_writer_test.cc b/libziparchive/zip_writer_test.cc
index 7322afb..63adbbc 100644
--- a/libziparchive/zip_writer_test.cc
+++ b/libziparchive/zip_writer_test.cc
@@ -279,7 +279,8 @@
std::vector<uint8_t> decompress(kBufSize);
memset(decompress.data(), 0, kBufSize);
- ASSERT_EQ(0, ExtractToMemory(handle, &data, decompress.data(), decompress.size()));
+ ASSERT_EQ(0, ExtractToMemory(handle, &data, decompress.data(),
+ static_cast<uint32_t>(decompress.size())));
EXPECT_EQ(0, memcmp(decompress.data(), buffer.data(), kBufSize))
<< "Input buffer and output buffer are different.";
@@ -391,7 +392,7 @@
actual.resize(expected.size());
uint8_t* buffer = reinterpret_cast<uint8_t*>(&*actual.begin());
- if (ExtractToMemory(handle, zip_entry, buffer, actual.size()) != 0) {
+ if (ExtractToMemory(handle, zip_entry, buffer, static_cast<uint32_t>(actual.size())) != 0) {
return ::testing::AssertionFailure() << "failed to extract entry";
}
