ffi: validate 'void' as parameter type in getFunction and getFunctions by Anshikakalpana · Pull Request #63504 · nodejs/node

Anshikakalpana · 2026-05-23T09:00:33Z

Passing 'void' as a parameter type in getFunction or getFunctions triggers an internal assertion instead of a user-friendly error.

In C, void in a parameter list means a function takes no arguments, expressed in Node.js FFI as an empty array []. There is no valid use case for 'void' as a parameter type.

Fix:
add early validation in getFunction and getFunctions that throws ERR_INVALID_ARG_VALUE when 'void' appears in the parameters array, before wrapWithSharedBuffer is called.

ShogunPanda · 2026-05-23T09:28:16Z

No, this is wrong. Don't validate at JS level but within C++ level please.

Anshikakalpana · 2026-05-23T10:21:57Z

No, this is wrong. Don't validate at JS level but within C++ level please.

Moved validation into the native FFI signature parsing layer in src/ffi/types.cc as suggested. Also removed the temporary JS-side validation.

ShogunPanda

LGTM!

nodejs-github-bot · 2026-05-23T11:05:41Z

CI: https://ci.nodejs.org/job/node-test-pull-request/73625/

codecov · 2026-05-23T12:34:59Z

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.34%. Comparing base (2e3daf6) to head (401f456).
⚠️ Report is 23 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #63504 +/- ##
========================================
Coverage 90.34% 90.34% ========================================
Files 730 730 Lines 234359 234468 +109 Branches 43923 43911 -12 ========================================
+ Hits 211720 211823 +103 - Misses 14361 14373 +12 + Partials 8278 8272 -6

Files with missing lines	Coverage Δ
src/ffi/types.cc	`47.51% <100.00%> (+0.60%)`	⬆️

... and 40 files with indirect coverage changes

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ShogunPanda · 2026-05-24T04:57:55Z

CI failures are relevant

Anshikakalpana · 2026-05-24T05:39:26Z

CI failures are relevant

Hi @ShogunPanda, the Jenkins failures are from the old commit 06410ff (confirmed via COMMIT_SHA_CHECK in the job parameters). GitHub Actions on the current commit 618bed6 are fully green. Could you please trigger a fresh CI run?

nodejs-github-bot · 2026-05-24T07:26:44Z

CI: https://ci.nodejs.org/job/node-test-pull-request/73650/

Anshikakalpana · 2026-05-24T12:08:58Z

Fixed the Windows failure — DynamicLibrary(null) rejects null on Windows. Now using kernel32.dll on Windows and null on Unix. Sorry for the multiple runs!

nodejs-github-bot · 2026-05-24T12:37:55Z

CI: https://ci.nodejs.org/job/node-test-pull-request/73656/

nodejs-github-bot · 2026-05-25T04:12:19Z

CI: https://ci.nodejs.org/job/node-test-pull-request/73688/

ShogunPanda · 2026-05-25T05:06:23Z

@Anshikakalpana unfortunately the failure still seems relevant. Can you please take a look?

Anshikakalpana · 2026-05-25T11:18:48Z

Update: found the issue — assert.throws with a regex matches against the error message, not the code. Fixed both assertions to use { code: 'ERR_INVALID_ARG_VALUE' }. Latest push should be green.

nodejs-github-bot · 2026-05-25T13:45:12Z

CI: https://ci.nodejs.org/job/node-test-pull-request/73709/

ShogunPanda · 2026-05-25T17:31:21Z

@Anshikakalpana Now is the linter 😭

Fixes: nodejs#63461 Signed-off-by: Anshikakalpana <anshikajain196872@gmail.com>

Anshikakalpana · 2026-05-25T19:05:48Z

Sorry! Trailing space on the blank line — fixed now.

nodejs-github-bot · 2026-05-25T19:17:24Z

CI: https://ci.nodejs.org/job/node-test-pull-request/73721/

nodejs-github-bot · 2026-05-26T20:10:13Z

CI: https://ci.nodejs.org/job/node-test-pull-request/73757/

nodejs-github-bot · 2026-05-27T06:43:58Z

Commit Queue failed

- Loading data for nodejs/node/pull/63504
✔ Done loading data for nodejs/node/pull/63504
----------------------------------- PR info ------------------------------------
Title ffi: validate 'void' as parameter type in getFunction and getFunctions (#63504)
Author Anshika Jain <anshikajain196872@gmail.com> (@Anshikakalpana)
Branch Anshikakalpana:ffi-void-parameter -> nodejs:main
Labels needs-ci, ffi
Commits 1
- ffi: validate 'void' as parameter type in getFunction and getFunctions
Committers 1
- anshikakalpana <anshikajain196872@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/63504
Fixes: https://github.com/nodejs/node/issues/63461
Reviewed-By: Paolo Insogna <paolo@cowtech.it>
------------------------------ Generated metadata ------------------------------
PR-URL: https://github.com/nodejs/node/pull/63504
Fixes: https://github.com/nodejs/node/issues/63461
Reviewed-By: Paolo Insogna <paolo@cowtech.it>
--------------------------------------------------------------------------------
ℹ This PR was created on Sat, 23 May 2026 09:00:33 GMT
✔ Approvals: 1
✔ - Paolo Insogna (@ShogunPanda) (TSC): https://github.com/nodejs/node/pull/63504#pullrequestreview-4358414426
✘ This PR needs to wait 75 more hours to land (or 0 minutes if there is one more approval)
✔ Last GitHub CI successful
ℹ Last Full PR CI on 2026-05-26T20:10:13Z: https://ci.nodejs.org/job/node-test-pull-request/73757/
- Querying data for job/node-test-pull-request/73757/
✔ Build data downloaded
✔ Last Jenkins CI successful
--------------------------------------------------------------------------------
✔ Aborted `git node land` session in /home/runner/work/node/node/.ncu

https://github.com/nodejs/node/actions/runs/26495351583

mcollina

lgtm

nodejs-github-bot · 2026-05-27T08:13:46Z

Landed in 31c40f0

Fixes: #63461 Signed-off-by: Anshikakalpana <anshikajain196872@gmail.com> PR-URL: #63504 Reviewed-By: Paolo Insogna <paolo@cowtech.it> Reviewed-By: Matteo Collina <matteo.collina@gmail.com>

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ffi: 'void' as parameter type triggers internal assertion #63461
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ffi: validate 'void' as parameter type in getFunction and getFunctions
401f456
Fixes: nodejs#63461 Signed-off-by: Anshikakalpana <anshikajain196872@gmail.com>

Anshikakalpana force-pushed the ffi-void-parameter branch from 78160bf to 401f456Compare May 25, 2026 19:03

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nodejs-github-bot merged commit 31c40f0 into nodejs:mainMay 27, 2026
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2026-06-01, Version 26.3.0 (Current) #63664
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