microsoft / microsoft/wil

Investigate/fix unreachable code warning suppression (C4702)

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bug feature-request
Dominant language
C++
Stars
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Forks
300
Avg merge
19h 12m
Merged PRs (30d)
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Description

Copied from ADO task 15917057

The original bug talked about warnings coming from the tests directory and so subsequently warning suppression was added in a few places (do a search for 4702). I did a quick and dirty test of removing these suppressions and didn't encounter any warnings/errors. It's possible that the issue has either been fixed or the original issue was a compiler bug that has since been fixed. Probably just need to find a good time to test out its removal on a full build to see if any errors get spit out.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Search the repository for every 4702 warning suppression, especially in the tests directory, and review how each is applied. Run a full build with the suppressions removed or tested in isolation; done means confirming whether C4702 warnings or errors still occur and documenting whether the suppressions can be removed.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
build-system, testing
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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