1 files changed, 6 insertions, 5 deletions
diff --git a/third_party/rust/uniffi_bindgen/src/bindings/python/templates/RustBufferTemplate.py b/third_party/rust/uniffi_bindgen/src/bindings/python/templates/RustBufferTemplate.py
index c317a632fc..44e0ba1001 100644
--- a/third_party/rust/uniffi_bindgen/src/bindings/python/templates/RustBufferTemplate.py
+++ b/third_party/rust/uniffi_bindgen/src/bindings/python/templates/RustBufferTemplate.py
@@ -1,12 +1,16 @@
 
 class _UniffiRustBuffer(ctypes.Structure):
     _fields_ = [
-        ("capacity", ctypes.c_int32),
-        ("len", ctypes.c_int32),
+        ("capacity", ctypes.c_uint64),
+        ("len", ctypes.c_uint64),
         ("data", ctypes.POINTER(ctypes.c_char)),
     ]
 
     @staticmethod
+    def default():
+        return _UniffiRustBuffer(0, 0, None)
+
+    @staticmethod
     def alloc(size):
         return _rust_call(_UniffiLib.{{ ci.ffi_rustbuffer_alloc().name() }}, size)
 
@@ -137,9 +141,6 @@ class _UniffiRustBufferStream:
     def read_double(self):
         return self._unpack_from(8, ">d")
 
-    def read_c_size_t(self):
-        return self._unpack_from(ctypes.sizeof(ctypes.c_size_t) , "@N")
-
 class _UniffiRustBufferBuilder:
     """
     Helper for structured writing of bytes into a _UniffiRustBuffer.