Issues

• Please fix build with FOLLY_USE_JEMALLOC=OFF

  facebook/folly#2721 · Filter by author yurivict opened on Oct 5, 2026

• Tests fail to compile on FreeBSD: fatal error: 'jemalloc/jemalloc.h' file not found

  facebook/folly#2720 · Filter by author yurivict opened on Oct 5, 2026

• macOS x86_64 build fails in MathOperation_Simple.cpp because -mno-sse2 conflicts with SDK _Float16 declarations

  facebook/folly#2716 · Filter by author kupson opened on Sep 30, 2026
  1

• Building folly on low-memory arm64 systems suffers high memory pressure due to  -g  in default Release CXX flags

  facebook/folly#2709 · Filter by author 1234562026 opened on Sep 22, 2026
  4

• folly does not build against OpenSSL 4.0 (opaque ASN1_STRING, const X509 accessors); fizz and wangle affected too

  facebook/folly#2705 · Filter by author michel-slm opened on Sep 17, 2026

• CO_ASSERT_FALSE is inverted when built against a released googletest

  facebook/folly#2704 · Filter by author mbasmanova opened on Sep 17, 2026

• [Bug] DistributedMutex flat combining crashes 100% under multi-threaded workloads on aarch64

  facebook/folly#2701 · Filter by author eric-yq opened on Sep 14, 2026

• building error in folly 2026.07.27.00 with mac xcode 27.0

  facebook/folly#2697 · Filter by author ThunderboltLei opened on Sep 11, 2026

• CI: add macos-26-intel (x86_64) to macOS CI matrix to catch Intel-only regressions

  facebook/folly#2692 · Filter by author levonk opened on Sep 8, 2026

• MemsetBenchmark.cpp: .align 64 is invalid on macOS x86_64 (Apple assembler interprets as 2^64)

  facebook/folly#2690 · Filter by author levonk opened on Sep 8, 2026

• coalesceAndReallocate / cloneCoalescedWithHeadroomTailroom integer-overflow guards were reverted (D116335797, D116669664, D115286348) — is main sitting unguarded intentionally?

  facebook/folly#2686 · Filter by author shaggyinsomniac opened on Aug 28, 2026

• build break - references to the nonexistent EDFThreadPoolExecutorBenchmark.cpp and PartialTest.cpp

  facebook/folly#2685 · Filter by author peter-joo opened on Aug 25, 2026

• Build failure on macOS arm64: Undefined symbols for architecture arm64: "void google::MakeCheckOpValueString<std::nullptr_t>(std::__1::basic_ostream<char, std::__1::char_traits<char>>*, std::nullptr_t const&)"

  facebook/folly#2681 · Filter by author barracuda156 opened on Aug 15, 2026
  1

• [macOS] CMake build fails with libc++ <cwctype> error due to system SDK /usr/include in Folly::folly_deps

  facebook/folly#2679 · Filter by author lgong2025 opened on Aug 12, 2026

• [needs meta attention] Buck2 build broken by repo sync tooling?

  facebook/folly#2676 · Filter by author lf- opened on Aug 7, 2026

• C++23 modules/header-unit compatibility when consuming Folly

  facebook/folly#2671 · Filter by author arianzagrosmachinery opened on Jul 15, 2026

• glog 0.7 compatibility still not there

  facebook/folly#2669 · Filter by author kiefernforst opened on Jul 7, 2026

• IoUringZeroCopyBufferPool.cpp build issues

  facebook/folly#2660 · Filter by author kiefernforst opened on Jun 15, 2026
  3

• Clarify expected behavior for FIXME in build/fbcode_builder/getdeps/builder.py

  facebook/folly#2659 · Filter by author Virendra2406087 opened on Jun 13, 2026
  1

• MeteredExecutor: is seq_cst on the modifyState CAS required, or would relaxed suffice?

  facebook/folly#2656 · Filter by author vijay-nagarajan opened on Jun 3, 2026

• Build breaks on aarch64: file INSTALL cannot find "/wrkdirs/usr/ports/devel/folly/work/.build/folly/external/aor/libfolly_external_aor_memcpy_aarch64-use.so": No such file or directory.

  facebook/folly#2652 · Filter by author yurivict opened on May 21, 2026
  2

• ParkingLot: symmetric F^sc on park side (mirror of ff7ab9d)

  facebook/folly#2649 · Filter by author vijay-nagarajan opened on May 12, 2026

• [Windows][MSVC] 10 folly::cli tests failed due to they rely on POSIX-specific newline and filesystem behavior

  facebook/folly#2648 · Filter by author QuellaZhang opened on May 8, 2026

• Proposal: evaluate a read-optimized concurrent ordered set as alternative to ConcurrentSkipList for read-heavy workloads

  facebook/folly#2638 · Filter by author Joey-Forever opened on Apr 19, 2026
  2

• Test "singleton_thread_local_test.ThreadLocal.DependencyTest" aborts

  facebook/folly#2603 · Filter by author sin-ack opened on Mar 22, 2026
  1