Update pytorch.js

source/pytorch.js

@@ -3733,10 +3733,12 @@ pytorch.Utility = class {
                 const obj = key === '' ? root : root[key];
                 if (obj && obj instanceof Map && obj.has('engine')) {
                     // https://github.com/NVIDIA-AI-IOT/torch2trt/blob/master/torch2trt/torch2trt.py
+                    const data = obj.get('engine');
                     const signature = [ 0x70, 0x74, 0x72, 0x74 ]; // ptrt
-                    const buffer = obj.get('engine');
-                    if (buffer instanceof Uint8Array && buffer.length > signature.length && signature.every((value, index) => value === buffer[index])) {
-                        throw new pytorch.Error('Invalid file content. File contains undocumented PyTorch TensorRT engine data.');
+                    if (data instanceof Uint8Array && data.length > signature.length && signature.every((value, index) => value === data[index])) {
+                        const buffer = data.slice(0, 24);
+                        const content = Array.from(buffer).map((c) => (c < 16 ? '0' : '') + c.toString(16)).join('');
+                        throw new pytorch.Error("Invalid file content. File contains undocumented PyTorch TensorRT engine data (" + content.substring(8) + ").");
                     }
                 }
                 if (obj) {