Issues

Issues

• Inlining: --inline-max-combined-binary-size is not enforced when several functions are inlined into one caller in the same iteration

  WebAssembly/binaryen#9384 · opened on Nov 11, 2026

• Add a pass to relax nullabilities of definitions

  WebAssembly/binaryen#9352 · opened on Nov 5, 2026

• --spill-pointers does not spill a value held on the Wasm value stack across a call

  WebAssembly/binaryen#9307 · opened on Oct 26, 2026
  2

• --translate-to-exnref / --emit-exnref produce invalid IR when a delegate target's unreachable try body ends in a none-typed instruction

  WebAssembly/binaryen#9291 · opened on Oct 21, 2026
  1

• LLVMMemoryCopyFillLowering: in-bounds memory.fill/memory.copy trap on a 4 GiB memory

  WebAssembly/binaryen#9257 · opened on Oct 13, 2026
  2

• Harden dumpDebugLoc against malformed .debug_loc sections

  WebAssembly/binaryen#9249 · opened on Oct 10, 2026

• Closed world optimization of wasm modules that have function types in import/export boundary

  WebAssembly/binaryen#9237 · opened on Oct 8, 2026
  10

• AlignmentLowering: an out-of-bounds unaligned store becomes a partial write

  WebAssembly/binaryen#9186 · opened on Oct 1, 2026

• DWARF line table rows with line 0 are dropped, so code gets attributed to the wrong line

  WebAssembly/binaryen#9164 · opened on Sep 28, 2026
  1

• Remove unnecessary null pointer checks

  WebAssembly/binaryen#9135 · opened on Sep 22, 2026
  1

• Exact Type Precision vs Optimization Cost

  WebAssembly/binaryen#9133 · opened on Sep 22, 2026
  3

• Complete the ChildTyper migration of validator child-type checks

  WebAssembly/binaryen#9123 · opened on Sep 20, 2026

• ChildTyper constraints drop sharedness, blocking validator migration

  WebAssembly/binaryen#9122 · opened on Sep 20, 2026

• Incomplete analysis for the states of global integer variables that does not eliminate excessive equality checks

  WebAssembly/binaryen#9086 · opened on Sep 9, 2026
  2

• More precise livenes analysis for locals under Asyncify

  WebAssembly/binaryen#9038 · opened on Aug 24, 2026
  5

• Most lit/help tests fail with new python-filecheck

  WebAssembly/binaryen#9018 · opened on Aug 19, 2026
  3

• ctor-eval/flatten_overflow.wast lit test fails on x86 32-bit

  WebAssembly/binaryen#9006 · opened on Aug 15, 2026
  2

• wasm2c from binaryen conflicts with wasm2c from wabt

  WebAssembly/binaryen#9002 · opened on Aug 13, 2026
  4

• Parse bug with extra non-nullable br_on_cast values

  WebAssembly/binaryen#8949 · opened on Jul 29, 2026

• Fuzzer generates invalid code for table initializers

  WebAssembly/binaryen#8911 · opened on Jul 15, 2026
  1

• Investigate why wasm-merge + wasm-opt output is larger than the corresponding monolithic module processed with wasm-opt

  WebAssembly/binaryen#8910 · opened on Jul 15, 2026
  1

• wasm-opt [parse exception: popping from empty stack (at 0:543)]

  WebAssembly/binaryen#8896 · opened on Jul 12, 2026
  2

• Recognize table initialization code in start function and be able to devirtualize based on it

  WebAssembly/binaryen#8869 · opened on Jun 26, 2026
  4

• Missing validation error

  WebAssembly/binaryen#8785 · opened on May 28, 2026
  1

• Assumptions for public types under --closed-world

  WebAssembly/binaryen#8754 · opened on May 21, 2026
  11