Issues

• Fast interpreter ignores the instruction limit when WASM_ENABLE_LABELS_AS_VALUES is 0

  wasm-micro-runtime/wasm-micro-runtime#5140 · Filter by author yspbwx2010 opened on Oct 2, 2026

• Document what wasm_runtime_set_instruction_count_limit applies to

  wasm-micro-runtime/wasm-micro-runtime#5139 · Filter by author yspbwx2010 opened on Oct 2, 2026

• WASM_MEM_ALLOC_WITH_USAGE=1 crashes with a NULL callback unless Alloc_With_Allocator is used

  wasm-micro-runtime/wasm-micro-runtime#5138 · Filter by author yspbwx2010 opened on Oct 2, 2026

• doc/build_wamr.md: default stack guard size is out of date

  wasm-micro-runtime/wasm-micro-runtime#5137 · Filter by author yspbwx2010 opened on Oct 2, 2026

• [BUG]: Fast JIT: narrow atomic loads (i32.atomic.load8_u/16_u, i64.atomic.load8_u/16_u/32_u) are sign-extended instead of zero-extended

  bug
  wasm-micro-runtime/wasm-micro-runtime#5121 · Filter by author khagankhan opened on Sep 25, 2026

• [BUG] fast-interp: upper 64 bits of v128 lost across block/loop params and multi-value returns

  bug
  wasm-micro-runtime/wasm-micro-runtime#5120 · Filter by author khagankhan opened on Sep 25, 2026

• Fast JIT: out of bounds memory access in an f64-heavy function (store address holds the upper half of an f64 value)

  wasm-micro-runtime/wasm-micro-runtime#5118 · Filter by author khordadi opened on Sep 24, 2026

• [BUG] array.new_data ignores data.drop and reads a dropped segment

  wasm-micro-runtime/wasm-micro-runtime#5114 · Filter by author jasisz opened on Sep 21, 2026

• [BUG] GC array.fill/array.copy skip bounds checks when len is zero

  wasm-micro-runtime/wasm-micro-runtime#5113 · Filter by author jasisz opened on Sep 21, 2026

• Windows x86-64 AOT loader/compiler loses implicit COFF IMAGE_REL_AMD64_REL32 addends

  bug
  wasm-micro-runtime/wasm-micro-runtime#5106 · Filter by author maprezentalok opened on Sep 17, 2026

• [BUG]: br_on_non_null corrupts its block result in the fast interpreter (GC enabled)

  bug
  wasm-micro-runtime/wasm-micro-runtime#5099 · Filter by author khagankhan opened on Sep 10, 2026

• [Question]: Being a contributor with GC bugs

  wasm-micro-runtime/wasm-micro-runtime#5098 · Filter by author khagankhan opened on Sep 10, 2026

• Soft-bounds memory_data_size is rounded up to the OS page while the allocation is exact — out-of-bounds window for sub-OS-page linear memories

  wasm-micro-runtime/wasm-micro-runtime#5080 · Filter by author miho opened on Aug 31, 2026

• Support Windows native invocation across MSVC and MinGW-w64 architectures

  wasm-micro-runtime/wasm-micro-runtime#5079 · Filter by author cpunion opened on Aug 30, 2026

• Getting crashes on ESP32 with 2.4.0 version

  wasm-micro-runtime/wasm-micro-runtime#5072 · Filter by author SeaRoll opened on Aug 24, 2026

• [BUG]: SIGSEGV in GC rootset traversal due to stale frame_ref mark

  bug
  wasm-micro-runtime/wasm-micro-runtime#5070 · Filter by author khagankhan opened on Aug 23, 2026

• ESP-IDF: libc-wasi build uses os_timespec as an integer type

  wasm-micro-runtime/wasm-micro-runtime#5068 · Filter by author 78 opened on Aug 22, 2026

• ESP-IDF 6.1: platform sources rely on removed transitive POSIX declarations

  wasm-micro-runtime/wasm-micro-runtime#5066 · Filter by author 78 opened on Aug 22, 2026

• [BUG] UBSan: misaligned WASMInterpFrame access in fast interpreter

  wasm-micro-runtime/wasm-micro-runtime#5059 · Filter by author xmzyshypnc opened on Aug 21, 2026

• Can the AOT app print multi-level call chains normally if an exception occurs?

  wasm-micro-runtime/wasm-micro-runtime#4989 · Filter by author cxdq2000-bot opened on Jul 9, 2026

• CI: move runners to ubuntu-24.04 and use the runner-native LLVM 18 / clang tooling for reliability

  wasm-micro-runtime/wasm-micro-runtime#4983 · Filter by author matthargett opened on Jul 5, 2026
  1

• error: implicit declaration of function ‘LLVMOrcThreadSafeContextGetContext’

  bug
  wasm-micro-runtime/wasm-micro-runtime#4979 · Filter by author Dialga opened on Jul 4, 2026

• Unify WAMR_BUILD_TARGET auto-detection across all CMake build files

  help wanted
  wasm-micro-runtime/wasm-micro-runtime#4966 · Filter by author brainrom opened on Jun 18, 2026
  1

• Why is SO_LINGER set by default ?

  wasm-micro-runtime/wasm-micro-runtime#4957 · Filter by author syborg64 opened on May 29, 2026

• [BUG] fd_table_unused always fails on platforms without random source (e.g. NuttX on RP2350/rp23xx ARM)

  bug
  wasm-micro-runtime/wasm-micro-runtime#4953 · Filter by author Brunocor26 opened on May 25, 2026