---
id: pr-flash-attention-1723
repo: Dao-AILab/flash-attention
pr: 1723
title: 'Fix(hopper): Correct C++ syntax in epilogue_fwd.hpp'
author: QuentinFitteRey
date: '2025-06-21'
url: https://github.com/Dao-AILab/flash-attention/pull/1723
source_category: upstream-code
architectures:
- sm90
tags:
- hopper
techniques:
- epilogue-fusion
hardware_features:
- hopper
kernel_types:
- attention
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 3ba6f826b199ff68aa9e9139a46280160defa5cd
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- hopper/epilogue_fwd.hpp
artifact_dir: evidence/pull-bundles/flash-attention/gh-1723
head_ref_oid: e26dd28e487117ee3e6bc4908682f41f31e6f83a
---
# Fix(hopper): Correct C++ syntax in epilogue_fwd.hpp

- Repository: `Dao-AILab/flash-attention`
- PR: [1723](https://github.com/Dao-AILab/flash-attention/pull/1723)
- Decision: `Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.`
- Reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.

## Changed Paths

- `hopper/epilogue_fwd.hpp`

## Evidence Bundle

`evidence/pull-bundles/flash-attention/gh-1723`
