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stream: fix Writable instanceof for subclasses #14945

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stream: fix Writable instanceof for subclasses #14945

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addaleax
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The current custom instanceof for Writable subclasses previously
returned false positives for instances of other subclasses of
Writable because it was inherited by these subclasses.

Fixes: #14943

Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • tests and/or benchmarks are included
  • commit message follows commit guidelines
Affected core subsystem(s)

stream

@nodejs-github-bot nodejs-github-bot added the stream Issues and PRs related to the stream subsystem. label Aug 19, 2017
@benjamingr
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LGTM, would love it if you added a test for this.

@addaleax
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@benjamingr Can you be more specific? The test in this PR is basically equivalent to the code snippet from the issue…

@benjamingr
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Nevermind, I see it is already covered for the reverse case.

@refack
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refack commented Aug 19, 2017

@addaleax made a suggestion for better assertion fail messages that were just out of the scope of this PR, but I felt should be remedied.
Obviously feel free to push this out if you don't like it.

CI: https://ci.nodejs.org/job/node-test-pull-request/9753/

@addaleax
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Yea, removed it. If you want, open a different PR, it’s barely going to conflict.

@refack
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refack commented Aug 19, 2017

Yea, removed it. If you want, open a different PR, it’s barely going to conflict.

Ack

@jasnell
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jasnell commented Aug 23, 2017 •
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There's too much red in that previous CI run. Trying again: https://ci.nodejs.org/job/node-test-pull-request/9799/ https://ci.nodejs.org/job/node-test-pull-request/9800/

Also, this needs a rebase

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jasnell commented Aug 23, 2017

Added a commit to resolve the merge conflict. Feel free to drop the extra commit if you'd like @addaleax

@addaleax
stream: fix Writable instanceof for subclasses
cbe2fce 
The current custom instanceof for `Writable` subclasses previously
returned false positives for instances of *other* subclasses of
`Writable` because it was inherited by these subclasses.

Fixes: nodejs#14943
@addaleax
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I don’t think CI handles merge commits well?

Anyway, I pushed a rebased version

@addaleax
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CI: https://ci.nodejs.org/job/node-test-commit/11986/

This should be ready.

@addaleax
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Landed in 7ce2555

@addaleax addaleax closed this Aug 24, 2017
@addaleax addaleax deleted the writable-x branch August 24, 2017 19:01
addaleax added a commit that referenced this pull request Aug 24, 2017
@addaleax
stream: fix Writable instanceof for subclasses
7ce2555 
The current custom instanceof for `Writable` subclasses previously
returned false positives for instances of *other* subclasses of
`Writable` because it was inherited by these subclasses.

Fixes: #14943
PR-URL: #14945
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
addaleax added a commit to addaleax/ayo that referenced this pull request Aug 25, 2017
@addaleax
stream: fix Writable instanceof for subclasses
2dfd397 
The current custom instanceof for `Writable` subclasses previously
returned false positives for instances of *other* subclasses of
`Writable` because it was inherited by these subclasses.

Fixes: nodejs/node#14943
PR-URL: nodejs/node#14945
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
addaleax added a commit to ayojs/ayo that referenced this pull request Aug 28, 2017
@addaleax
stream: fix Writable instanceof for subclasses
f625430 
The current custom instanceof for `Writable` subclasses previously
returned false positives for instances of *other* subclasses of
`Writable` because it was inherited by these subclasses.

Fixes: nodejs/node#14943
PR-URL: nodejs/node#14945
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
MylesBorins pushed a commit that referenced this pull request Sep 10, 2017
@addaleax @MylesBorins
stream: fix Writable instanceof for subclasses
0b6a853 
The current custom instanceof for `Writable` subclasses previously
returned false positives for instances of *other* subclasses of
`Writable` because it was inherited by these subclasses.

Fixes: #14943
PR-URL: #14945
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
@MylesBorins MylesBorins mentioned this pull request Sep 10, 2017
Merged
MylesBorins pushed a commit that referenced this pull request Sep 12, 2017
@addaleax @MylesBorins
stream: fix Writable instanceof for subclasses
c861462 
The current custom instanceof for `Writable` subclasses previously
returned false positives for instances of *other* subclasses of
`Writable` because it was inherited by these subclasses.

Fixes: #14943
PR-URL: #14945
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
@MylesBorins
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@addaleax should we backport to v6.x? It seems like this could change behavior, even if it were to the correct behavior

@addaleax
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@MylesBorins Yes, I am confident that we should backport this fix.

MylesBorins pushed a commit that referenced this pull request Sep 20, 2017
@addaleax @MylesBorins
stream: fix Writable instanceof for subclasses
66187fa 
The current custom instanceof for `Writable` subclasses previously
returned false positives for instances of *other* subclasses of
`Writable` because it was inherited by these subclasses.

Fixes: #14943
PR-URL: #14945
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
@MylesBorins
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done :D 🎉

@MylesBorins MylesBorins mentioned this pull request Sep 20, 2017
Merged
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@BridgeAR BridgeAR BridgeAR approved these changes

@cjihrig cjihrig cjihrig approved these changes

@TimothyGu TimothyGu TimothyGu approved these changes

@benjamingr benjamingr benjamingr approved these changes

@evanlucas evanlucas evanlucas approved these changes

@jasnell jasnell jasnell approved these changes

@refack refack refack approved these changes

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Writable's instanceof implementation is faulty
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@addaleax @benjamingr @refack @jasnell @MylesBorins @evanlucas @TimothyGu @cjihrig @BridgeAR @nodejs-github-bot