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Android DateTimeFormat reports h11/h24 but formats midnight as h12/h23

Status: Open.

#2209 In facebook/hermes;

· mozzius opened on Sep 26, 2026

tryGetMutableBuffer() segfaults after another external ArrayBuffer gets a property

Status: Open.

#2201 In facebook/hermes;

· mrousavy opened on Sep 25, 2026

Publish a Linux ARM64 (aarch64) hermesc binary in hermes-compiler

Status: Open.

#2194 In facebook/hermes;

· nnnnoel opened on Sep 23, 2026

RN 0.88 ships without lazy-compilation fix

bugSomething isn't workingSomething isn't working

Status: Open.

#2192 In facebook/hermes;

· Nezz opened on Sep 23, 2026

Intermittent HadesGC OldGen corruption (EXC_BAD_ACCESS) correlated with low device memory, across unrelated RN app screens

Status: Open.

#2190 In facebook/hermes;

· db-flutterwave opened on Sep 18, 2026

ISerialization hits "Too many handles allocated in GCScope" on small object arrays

Status: Open.

Bug

#2189 In facebook/hermes;

· mrousavy opened on Sep 18, 2026

static_h: an asmjit failure is an unconditional hermes_fatal, so a platform that refuses executable memory turns a JIT *request* into a dead process instead of an interpreted one

Status: Open.

#2187 In facebook/hermes;

· altween opened on Sep 17, 2026

static_h: HERMESVM_ALLOW_JIT=1 means "enabled if supported by the platform", but support is resolved only from predefines — asmjit can answer it at run time

Status: Open.

#2186 In facebook/hermes;

· altween opened on Sep 17, 2026

static_h: the sampling profiler has no build switch, so a target with no POSIX signal delivery has to stub sigaction / sigemptyset / pthread_kill for an instrument it cannot run

Status: Open.

#2185 In facebook/hermes;

· altween opened on Sep 17, 2026

shermes emits GNU-style compile and link flags unconditionally, so its own default SHERMES_CC (= CMAKE_C_COMPILER = clang-cl) cannot link what it compiles on Windows

Status: Open.

#2176 In facebook/hermes;

· altween opened on Sep 7, 2026

lib/CMakeLists.txt passes /WHOLEARCHIVE:hermesvm_a as a bare name; lld-link cannot open it, so the shared hermesvm (and therefore shermes) does not link under clang-cl

Status: Open.

#2175 In facebook/hermes;

· altween opened on Sep 7, 2026

API/jsi/jsi/CMakeLists.txt tests CMAKE_CXX_COMPILER_ID MATCHES "MSVC", so clang-cl gets neither branch's flags

Status: Open.

#2174 In facebook/hermes;

· altween opened on Sep 7, 2026