Fedora 39: 2023-7934802344 Critical: Folly Proxygen DDoS Threat Fix

Folly (acronymed loosely after Facebook Open Source Library) is a library of

C++14 components designed with practicality and efficiency in mind. Folly

contains a variety of core library components used extensively at Facebook. In

particular, it's often a dependency of Facebook's other open source C++ efforts

and place where those projects can share code.

It complements (as opposed to competing against) offerings such as Boost and of

course std. In fact, we embark on defining our own component only when something

we need is either not available, or does not meet the needed performance

profile. We endeavor to remove things from folly if or when std or Boost

obsoletes them.

Performance concerns permeate much of Folly, sometimes leading to designs that

are more idiosyncratic than they would otherwise be (see e.g. PackedSyncPtr.h,

SmallLocks.h). Good performance at large scale is a unifying theme in all of

Folly.

Update Folly stack to the latest 2023.10.16.00 tag proxygen: Security fix for CVE-2023-44487