microsoft / microsoft/win32metadata

CHILDID_SELF should be a signed integer

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bug
Dominant language
C++
Stars
1.5k
Forks
149
Avg merge
5d 16h
Merged PRs (30d)
4

Description

`CHILDID_SELF` is currently an unsigned 32-bits integer in metadata, however the comment in the C header says that IDs can be negative. APIs like `SetWinEventHook` properly use signed integers, so comparing with CHILDID_SELF currently requires a cast.

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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

Start by locating the metadata declaration for CHILDID_SELF and compare its type with the C header comment and the signed integer usage in SetWinEventHook. Done means the generated metadata represents CHILDID_SELF as a signed integer so callers no longer need a cast when comparing it.

Written by the indexing model from the issue text.

Assessment

Tech stack
c, cpp
Domain
operating-systems, tooling
Issue type
Bug
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
55/100

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