`SerializerRoundTrip.DeepFullTree` gtest is failing with MSVC 2026
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- Dominant language
- C++
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Description
```
[ RUN ] SerializerRoundTrip.DeepFullTree
unknown file: error: C++ exception with description "[08:58:25] D:\a\treelite\treelite\src\model_builder\model_builder.cc:126: Node with key 2 not found" thrown in the test body.
```
https://github.com/dmlc/treelite/actions/runs/28227735573/job/83623709179?pr=665
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Research direction
Start with the SerializerRoundTrip.DeepFullTree gtest and reproduce the failure in the linked MSVC 2026 GitHub Actions job. Trace the exception reported at src/model_builder/model_builder.cc:126, then verify that the test completes without the “Node with key 2 not found” error on MSVC.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- testing
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 55/100