lutzroeder/netron · error · Error

Expected 'name'.

Error message

Expected 'name'.

What it means

Generated binary decoder for caffe2.PartitionInfo throws when the decoded message lacks the required 'name' field. The proto marks name as required, so wire data that never sets field 1 fails verification after the decode loop.

Source

Thrown at source/caffe2-proto.js:1194

                case 1:
                    message.name = reader.string();
                    break;
                case 2:
                    message.device_id = reader.array(message.device_id, () => reader.int32(), tag);
                    break;
                case 3:
                    message.extra_info = reader.string();
                    break;
                case 4:
                    message.backend_options.push(caffe2.BackendOptions.decode(reader, reader.uint32()));
                    break;
                default:
                    reader.skipType(tag & 7);
                    break;
            }
        }
        if (!Object.prototype.hasOwnProperty.call(message, 'name')) {
            throw new Error("Expected 'name'.");
        }
        return message;
    }

    static decodeText(reader) {
        const message = new caffe2.PartitionInfo();
        reader.start();
        while (!reader.end()) {
            const tag = reader.tag();
            switch (tag) {
                case "name":
                    message.name = reader.string();
                    break;
                case "device_id":
                    reader.array(message.device_id, () => reader.int32());
                    break;
                case "extra_info":
                    message.extra_info = reader.string();

View on GitHub (pinned to d8a543f5f8)

Solutions

1. Decode the enclosing message and access partition_info through it so lengths/offsets are correct.
2. Re-encode the source with a complete PartitionInfo including name.
3. Verify buffer non-empty and starts with a valid field-1 tag before decoding.
4. Regenerate the JS from the matching .proto.

Example fix

// before
const pi = caffe2.PartitionInfo.decode(chunk); // throws Expected 'name'

// after
const net = caffe2.NetDef.decode(fullBuffer);
const pi = net.partition_info[i]; // properly framed sub-message with name present

if (chunk.length===0 || (chunk[0]>>3)!==1) throw new RangeError('PartitionInfo buffer missing name field framing');

const isPartitionInfoLike = (o) => o != null && typeof o.name === 'string';

try { pi = caffe2.PartitionInfo.decode(chunk); } catch (e) { if (/Expected 'name'/.test(e.message)) { decode enclosing NetDef and read partition_info; } else throw e; }

When it happens

Trigger: PartitionInfo.decode() on bytes with no name field — mis-sliced sub-buffers, empty/truncated payloads, or data encoded by a schema where the field moved.

Common situations: Reading partition info sections from caffe2 network/partition files, manually slicing embedded messages with wrong offsets, or cross-version model interchange.

Related errors

• Expected 'begin'.
• Expected 'end'.
• Expected 'precision'.
• Expected 'scale'.
• Expected 'bias'.

AI-assisted analysis of lutzroeder/netron@d8a543f5f8 (2026-08-27). Data as JSON: /api/errors/4174c6de2f42b8cb. Report an issue: GitHub.