Anders Schau Knatten (@knatten.bsky.social)

Clang-tidy 21 wants you to prefer scoped_lock over lock_guard. I feel scoped_lock should be a specialized tool when you need to lock several mutexes. It also allows you to pass it zero mutexes, which for a bug lock_guard doesn't allow: godbolt.org/z/WzG4YeP83 Do you think clang-tidy is right?

loading . . .

Compiler Explorer - C++ (x86-64 clang (trunk)) int main() { std::mutex m; { // Normal use case std::lock_guard l{m}; } { // Fails to compile if you forget to pass it the mutex, good! std::lock_guard ... https://godbolt.org/z/WzG4YeP83

3 months ago