fix(image_processor): maintain 3-tuple return contract in InpaintProcessor (#14481)
Sole Author: Patrick Ribbsaeter (@patrickswedish) · Immutable Commit SHA: d961a388fd02e4db38d17350c8dd9b8abe642e05
Generative diffusion pipeline fix preserving the 3-tuple tensor return invariant in VaeImageProcessor/InpaintProcessor across masked latent conditioning workflows.
PR #14481
Merged Mainline
d961a38
Immutable Git SHA
Python
Ai Infrastructure
42 Pipeline Tests Green
CI & Test Matrix
01 · Engineering problem
The failure mode
VaeImageProcessor / InpaintProcessor broke its documented 3-tuple return contract when mask=None was passed on certain inpainting code paths, causing unpacking errors in downstream diffusion pipelines.
02 · Technical response
What changed
- 01Standardized the InpaintProcessor return tuple contract when mask is None across tensor, PIL, and NumPy inputs.
- 02Added unit regression coverage verifying deterministic 3-tuple output shapes.
03 · Verified outcome
Evidence-backed result
- ✓Restored consistent 3-tuple return semantics across Hugging Face Diffusers inpainting processors.
- ✓Passed 16/16 CI checks and merged upstream into huggingface/diffusers as commit d961a388fd02e4db38d17350c8dd9b8abe642e05.
04 · Cryptographic Git record
Immutable source evidence
Independent open-source engineering authored solely by Patrick Ribbsaeter (@patrickswedish). Company and project names identify the public repository context only under nominative fair use. No employment, client, vendor, or partnership relationship is implied unless explicitly stated.