Describe the issue

While updating onnxruntime from 1.5.1 to the latest version 1.24.4, our model triggered following exception when calling CreateSessionFromArray() .
Exception during initialization: onnxruntime\core\optimizer\initializer.cc:77 onnxruntime::Initializer::Initializer !model_path.empty() was false. model_path must not be empty. Ensure that a path is provided when the model is created or loaded.

From debugging this issue, we noticed that although the tensor_proto from our model evaluates to true at line 62 in onnxruntime/core/optimizer/initializer.cc it does not evaluate to true at line 64.
Removing ORT_ENFORCE at line 76 / 77 in onnxruntime\core\optimizer\initializer.cc solves this issue so that the session can be created again and the model performs as expected.
Also, our model loads without issues as a .onnx model via CreateSession() with the latest onnxruntime.

To reproduce

Load the .onnx model that triggers this exception into a buffer and call CreateSessionFromArray() on it.
This issue could not be reproduced with some of the models from the onnxruntime model zoo.

Urgency

No response

Platform

Windows

OS Version

11 Enterprise

ONNX Runtime Installation

Built from Source

ONNX Runtime Version or Commit ID

1.24.4

ONNX Runtime API

C

Architecture

X64

Execution Provider

Default CPU

Execution Provider Library Version

No response