关于top_blob创建内存分配的报错！
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Description
请教一个问题，在使用ncnn创建blob时，为什么top_blob.create（num_output，4u，opt.allocator）正常
而top_blob.create（num_output，1u，opt.allocator）报错，我把数据转换成了uint8的。
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the two top_blob.create calls with num_output, element sizes 4u and 1u, opt.allocator, and the uint8 conversion. Capture the complete error, platform, and a minimal reproducer, then inspect the relevant ncnn allocation path; done means explaining why the 1u case fails or identifying a confirmed fix.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- machine-learning
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100