microsoft / microsoft/DirectX-Headers
Use of CD3DX12_CPU_DESCRIPTOR_HANDLE in an array can result in static analysis warning
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- Dominant language
- C
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- 743
- Forks
- 202
- Avg merge
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- Merged PRs (30d)
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Description
Please see this godbolt output https://godbolt.org/z/ozYG6e
If you create an uninitialized array of CD3DX12_CPU_DESCRIPTOR_HANDLE and then initializing the array in a loop with objects of type D3D12_CPU_DESCRIPTOR_HANDLE, it results in a static analysis error on the usage of the uninitialized array. This does not happen with a non-array.
It actually looks like changing just the custom assignment operator can fix this, if you "= default" the "=" operator, the warning goes away. For context, this warning looks like it was introduced when all the constructors were changed from "{}" (empty implementations) to "= default".
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Research direction
Start with the linked Godbolt output and inspect the CD3DX12_CPU_DESCRIPTOR_HANDLE constructors and custom assignment operator. Reproduce the static-analysis warning for an uninitialized array initialized in a loop, then verify that the warning is gone without affecting the non-array case.
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Assessment
- Tech stack
- cpp
- Domain
- computer-graphics
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100