Stream: git-wasmtime

Topic: wasmtime / PR #13428 gc_fuzz: Add `eqref` support

Wasmtime GitHub notifications bot (May 21 2026 at 16:14):

khagankhan requested fitzgen for a review on PR #13428.

Wasmtime GitHub notifications bot (May 21 2026 at 16:14):

khagankhan opened PR #13428 from khagankhan:i31 to bytecodealliance:main:

eqref:

types.rs:

• Added FieldType::EqRef to for_each_field_type! (storage (ref null eq), default ref.null eq) — picked up automatically by FieldType::ALL, to_storage_type, emit_default_const, is_packed, and random.
• Added StackType::Eq variant.
• Added an Eq arm to StackType::fixup that also accepts any Struct(_) on the stack (struct <: eq), emitting NullEq otherwise.

ops.rs:

• Extended WasmEncodingBases with eq_local_idx, eq_global_idx, eq_table_idx
• Added function take_eq the take_eq import, an eqref table, an eqref global, and an eqref local.
• Added take_eqref_idx = 4 and shifted typed-struct func-import base implicitly via imports.len().
• Added 8 new GcOp variants: NullEq, TakeEqCall, etc.

oracles.rs:

• Registered a take_eq host function taking (ref null eq) like take_struct.

+cc @fitzgen @eeide

Wasmtime GitHub notifications bot (May 21 2026 at 16:14):

khagankhan requested wasmtime-fuzz-reviewers for a review on PR #13428.

Wasmtime GitHub notifications bot (May 21 2026 at 18:19):

:thumbs_up: fitzgen submitted PR review:

Thanks!

Wasmtime GitHub notifications bot (May 21 2026 at 18:19):

fitzgen added PR #13428 gc_fuzz: Add eqref support to the merge queue.

Wasmtime GitHub notifications bot (May 21 2026 at 18:44):

:check: fitzgen merged PR #13428.

Wasmtime GitHub notifications bot (May 21 2026 at 18:44):

fitzgen removed PR #13428 gc_fuzz: Add eqref support from the merge queue.

Last updated: Jun 01 2026 at 09:49 UTC