leveldb

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Improve no_destructor.h

4

1. Removed dependency on `std::aligned_storage` (which will be deprecated in C++23; see also https://github.com/cplusplus/papers/issues/197). 2. Removed redundant `static_assert`s. 3. Guaranteed the placement new-expression calls global `operator new`.

frederick-vs-ja

In the function Status VersionSet::Recover(bool* save_manifest), the statement manifest_file_number_ = next_file; could potentially lead to a scenario where the identifier of the manifest file matches that of the log file...

owenliang

Why DBImpl::Write not call signal when it release the lock ?

1

 这里没有释放signal，会导致 write 持续处于 Wait 状态 @ghemawat https://github.com/google/leveldb/commit/d79762e27369365a7ffe1f2e3a5c64b0632079e1#diff-6fdb755f590d9b01ecb89bd8ceb28577e85536d4472f8e4fc3addeb9a65f3645R1115-R1135

sunbohong

Memory Leak in Status Class and Usage in leveldb

2

# Description There appears to be a potential memory leak issue within the Status class of the leveldb project. This issue was discovered during fuzz testing and further analysis of...

YancyLii

Null Pointer Dereference Vulnerability in leveldb_open

1

### Description The `leveldb_open` function in LevelDB is vulnerable to a null pointer dereference issue, where it directly converts a `const char* name` to a `std::string` without null checks. This...

YancyLii

What do these four lines of code do?

1

https://github.com/google/leveldb/blob/068d5ee1a3ac40dabd00d211d5013af44be55bea/util/env.cc#L25 https://github.com/google/leveldb/blob/068d5ee1a3ac40dabd00d211d5013af44be55bea/util/env.cc#L26 https://github.com/google/leveldb/blob/068d5ee1a3ac40dabd00d211d5013af44be55bea/util/env.cc#L28 https://github.com/google/leveldb/blob/068d5ee1a3ac40dabd00d211d5013af44be55bea/util/env.cc#L29 `Status Env::RemoveDir(const std::string& dirname) { return DeleteDir(dirname); } Status Env::DeleteDir(const std::string& dirname) { return RemoveDir(dirname); } Status Env::RemoveFile(const std::string& fname) { return DeleteFile(fname); } Status Env::DeleteFile(const...

cslayers

Fix for Swift Package Manager support

1

SPM can't differ if .h is C or C++ header

purpln

Why do we need the class MemTableBackwardIterator? Do we need to delete it?

Stephan14

Aarif

1

i added my name

imaarifkhan001

Memory consumption problem

1

I am using LevelDB version SHARED_VERSION_MAJOR = 1 SHARED_VERSION_MINOR = 20 OS  Database ~ 20 000 000 Pair  Memory consumption before reading...

mitr15fan15v