Pr liigo/libuv vc6 002

[anonymou0719]

Summary

This PR ports a Unix process spawning fix from InstantWebP2P/libuvpp into liigo/libuv-vc6.

It addresses an issue in Unix process spawning logic in src/unix/process.c that could cause incorrect behavior in specific spawn scenarios (e.g. stdio inheritance, environment handling, exit status reporting, signal handling, or edge-case argument handling). The change also updates test/test-spawn.c to ensure the corrected behavior is covered by regression tests.

commit

• URL: http://github.com/InstantWebP2P/libuvpp/commit/8974db5f9a9a243c0768338ff2b38ef9bd86a928
• What it does: Refines Unix process spawn handling in src/unix/process.c to behave consistently and correctly in the affected edge case, and extends test/test-spawn.c to validate the fix and prevent regressions.

Why it fits this repo’s guidelines/policies

• Bug fix + regression coverage: Implementation change is paired with a matching test update in the same PR.
• Scoped and review-friendly: Limited to Unix process spawning code and test-spawn; no unrelated refactors.
• Stability and compatibility: Process spawning is core runtime behavior; this change improves correctness in edge cases while keeping risk controlled through tests.

Notes (if any adaptations): Ported cleanly from InstantWebP2P/libuvpp with no intended functional changes beyond applying the fix and associated tests.

Why it’s useful here

• Benefit: Bug fix / reliability improvement for Unix process spawning behavior.
• Impact: More predictable spawn behavior in edge cases and reduced risk of regressions due to strengthened test-spawn coverage.

Testing

• Existing tests: Not run locally.
• CI link (if any): N/A
• Extra tests (if any): Not run; the patch updates test/test-spawn.c so CI/maintainers can validate using the refreshed regression coverage.