diff --git a/mlir/lib/Bytecode/Writer/BytecodeWriter.cpp b/mlir/lib/Bytecode/Writer/BytecodeWriter.cpp
--- a/mlir/lib/Bytecode/Writer/BytecodeWriter.cpp
+++ b/mlir/lib/Bytecode/Writer/BytecodeWriter.cpp
@@ -344,8 +344,8 @@
   DialectWriter(int64_t bytecodeVersion, EncodingEmitter &emitter,
                 IRNumberingState &numberingState,
                 StringSectionBuilder &stringSection)
-      : emitter(emitter), numberingState(numberingState),
-        stringSection(stringSection) {}
+      : bytecodeVersion(bytecodeVersion), emitter(emitter),
+        numberingState(numberingState), stringSection(stringSection) {}
 
   //===--------------------------------------------------------------------===//
   // IR
diff --git a/mlir/test/Bytecode/operand_segment_sizes.mlir b/mlir/test/Bytecode/operand_segment_sizes.mlir
new file mode 100644
--- /dev/null
+++ b/mlir/test/Bytecode/operand_segment_sizes.mlir
@@ -0,0 +1,8 @@
+// RUN: mlir-opt -emit-bytecode %s | mlir-opt | FileCheck %s
+
+
+func.func @roundtripOperandSizeAttr(%arg0: i32) {
+  // CHECK: odsOperandSegmentSizes = array<i32: 0, 2, 1, 1>}>
+  "test.attr_sized_operands"(%arg0, %arg0, %arg0, %arg0) <{odsOperandSegmentSizes = array<i32: 0, 2, 1, 1>}> : (i32, i32, i32, i32) -> ()
+  return
+}