1 files changed, 7 insertions, 1 deletions
diff --git a/js/src/vm/SharedArrayObject.h b/js/src/vm/SharedArrayObject.h
index 572fe2e6fb..525ee78451 100644
--- a/js/src/vm/SharedArrayObject.h
+++ b/js/src/vm/SharedArrayObject.h
@@ -116,7 +116,9 @@ class SharedArrayRawBuffer {
   // this method merely sets the number of user accessible bytes of this buffer.
   bool grow(size_t newByteLength);
 
-  static int32_t liveBuffers();
+  static size_t offsetOfByteLength() {
+    return offsetof(SharedArrayRawBuffer, length_);
+  }
 };
 
 class WasmSharedArrayRawBuffer : public SharedArrayRawBuffer {
@@ -364,6 +366,10 @@ class SharedArrayBufferObject : public ArrayBufferObjectMaybeShared {
     return rawBufferObject()->dataPointerShared();
   }
 
+  static constexpr int rawBufferOffset() {
+    return NativeObject::getFixedSlotOffset(RAWBUF_SLOT);
+  }
+
   // WebAssembly support:
 
   // Create a SharedArrayBufferObject using the provided buffer and size.