1 files changed, 37 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/bug1858423.js b/js/src/jit-test/tests/wasm/bug1858423.js
new file mode 100644
index 0000000000..a90d308906
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/bug1858423.js
@@ -0,0 +1,37 @@
+// |jit-test| --wasm-gc; skip-if: !wasmCachingEnabled() || !wasmGcEnabled()
+
+const code = wasmTextToBinary(`(module
+  (type $t (struct (field i32) (field anyref)))
+  (type $t2 (struct (field f32) (field externref)))
+  (func (export "test") (param externref) (result externref)
+    i32.const 42
+    f32.const 1.0
+    local.get 0
+    struct.new $t2
+    struct.new $t
+    extern.convert_any
+  )
+
+  (func (export "check") (param externref) (result externref)
+    local.get 0
+    any.convert_extern
+    ref.cast (ref $t)
+    struct.get $t 1
+    ref.cast (ref $t2)
+    struct.get $t2 1
+  )
+)`);
+
+function instantiateCached(code, imports) {
+  // Cache the code.
+  wasmCompileInSeparateProcess(code);
+  // Load from cache.
+  let m = wasmCompileInSeparateProcess(code);
+  assertEq(wasmLoadedFromCache(m), true);
+  return new WebAssembly.Instance(m, imports);
+}
+
+const {test,check} = instantiateCached(code).exports;
+let obj = test({i:1});
+gc();
+assertEq(check(obj).i, 1);