Issues

• [ Runtime ] var_export does not retain float-ness of 1.0

  facebook/hhvm#9874 · Filter by author lexidor opened on Oct 15, 2026

• [ Runtime ] -9223372036854775808 does not produce Math\INT64_MIN

  facebook/hhvm#9870 · Filter by author lexidor opened on Oct 9, 2026

• [ Typechecker ] Typechecker forgets to analyze the second iteration of a loop that is inside a loop

  hack
  facebook/hhvm#9852 · Filter by author lexidor opened on Sep 7, 2026

• HH\Lib\Vec\slice() gets slower when slicing at larger offsets into a contiguous container

  facebook/hhvm#9821 · Filter by author hershel-theodore-layton opened on Jul 24, 2026

• [ Typechecker ] <<__Memoize>> can cause the same object to be typed in incompatible ways

  hack
  facebook/hhvm#9797 · Filter by author lexidor opened on Jun 10, 2026

• Is HHVM supported on Android / Termux (ARM64)?

  facebook/hhvm#9704 · Filter by author cleverndbest opened on Jan 21, 2026
  1

• [ Crash ] EOPNOTSUPP hh_client on linux kernel version 6.9 and below in Docker (using overlayfs)

  crashwon't fix
  facebook/hhvm#9610 · Filter by author lexidor opened on May 28, 2025
  5

• Install it on Debian unstable/trixie

  facebook/hhvm#9524 · Filter by author OrionRandD opened on Nov 15, 2024
  4

• [ Typechecker ] File-level attribute annotations are not typechecked when file declares zero non-const entities

  hack
  facebook/hhvm#9508 · Filter by author lexidor opened on Aug 10, 2024
  5

• Opensource Buck2 build

  buildwishlist
  facebook/hhvm#9416 · Filter by author PhilipMetzger opened on Jan 7, 2024
  2

• Getting started guide is using abandoned packages

  facebook/hhvm#9397 · Filter by author justdan6 opened on Sep 16, 2023
  3

• Use type Bar\{Bar} treated differently to use type Bar\Bar

  hack
  facebook/hhvm#9335 · Filter by author muglug opened on Feb 15, 2023
  2

• grapheme\slice returns unexpected result for emojis

  facebook/hhvm#9301 · Filter by author blurrcat opened on Nov 29, 2022

• Shapes::keyExists does not refine nested key information

  hack
  facebook/hhvm#9294 · Filter by author muglug opened on Nov 8, 2022
  2

• zip_open/ZipArchive should throw an exception in CLI server mode unless opening read-only

  facebook/hhvm#9285 · Filter by author fredemmott opened on Nov 1, 2022

• [ HipHop Debugger ] dict[0 => NAN] equals itself in the debugger, but not cli or server mode

  facebook/hhvm#9272 · Filter by author lexidor opened on Oct 21, 2022

• [ HSL ] Dict\chunk() behaves differently from doc block when given a KeyedTraversable with duplicate keys

  facebook/hhvm#9271 · Filter by author lexidor opened on Oct 21, 2022

• Default ini files provided by the nix package

  facebook/hhvm#9187 · Filter by author Atry opened on Sep 13, 2022

• Use packages from nixpkgs where possible

  facebook/hhvm#9130 · Filter by author Atry opened on Jul 20, 2022

• [ Typechecker ] __ConsistentConstruct attribute on a class with a final constructor hides error in the overridden constructor

  hack
  facebook/hhvm#9095 · Filter by author lexidor opened on May 16, 2022
  2

• Failed to Hugify the .text Section - HardwareCounter perf_event_open failed with Permission Denied

  facebook/hhvm#9063 · Filter by author codewizard13 opened on Apr 7, 2022
  3

• Grammar railroad diagram

  facebook/hhvm#9051 · Filter by author mingodad opened on Apr 4, 2022

• Final private method in trait overridden by a child class of the using class is not caught by hh_client

  hack
  facebook/hhvm#9046 · Filter by author lexidor opened on Mar 31, 2022

• hh_client --remove-dead-fixmes removes ALL fixmes

  facebook/hhvm#9043 · Filter by author ssandler opened on Mar 24, 2022
  7

• Potential deadlock in PCRE cache

  probably easy
  facebook/hhvm#9032 · Filter by author tstarling opened on Mar 12, 2022
  1