---
id: pr-cccl-cub-8407
repo: NVIDIA/cccl
pr: 8407
title: Workaround nvc++ crash in warpspeed scan
author: bernhardmgruber
date: '2026-04-14'
url: https://github.com/NVIDIA/cccl/pull/8407
source_category: upstream-code
architectures:
- sm100
tags:
- scan
techniques:
- warp-specialization
hardware_features: []
kernel_types:
- scan
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 90677222450da7ab75179c6bc8309ec04f7b2710
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- cub/cub/detail/warpspeed/squad/load_store.cuh
artifact_dir: evidence/pull-bundles/cccl-cub/gh-8407
head_ref_oid: 442f5979437ead02271e304a00a7223db21e4189
---
# Workaround nvc++ crash in warpspeed scan

- Repository: `NVIDIA/cccl`
- PR: [8407](https://github.com/NVIDIA/cccl/pull/8407)
- 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

- `cub/cub/detail/warpspeed/squad/load_store.cuh`

## Evidence Bundle

`evidence/pull-bundles/cccl-cub/gh-8407`
