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util: use assert for unreachable code #37249

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Feb 8, 2021
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@Trott Trott commented Feb 6, 2021

Great effort is taken to keep util.inspect() from throwing while
inspecting a linked list or other items that require recursion. It is
likely still possible at this time to cause a throw with prototype
pollution, but that will change soon when the code is modified to use
primordials.

This commit instructs our coverage to not be concerned about not being
able to reach the throwing-an-error code and changes the throw there to
an assert so users will be instructed to open a bug with Node.js should
they manage to cause the code to throw.

@nodejs-github-bot nodejs-github-bot added the util Issues and PRs related to the built-in util module. label Feb 6, 2021
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Great effort is taken to keep `util.inspect()` from throwing while
inspecting a linked list or other items that require recursion. It is
likely still possible at this time to cause a throw with prototype
pollution, but that will change soon when the code is modified to use
primordials.

This commit instructs our coverage to not be concerned about not being
able to reach the throwing-an-error code and changes the throw there to
an assert so users will be instructed to open a bug with Node.js should
they manage to cause the code to throw.

PR-URL: nodejs#37249
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Antoine du Hamel <[email protected]>
Reviewed-By: Darshan Sen <[email protected]>
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Trott commented Feb 8, 2021

Landed in 04bef7a

@Trott Trott merged commit 04bef7a into nodejs:master Feb 8, 2021
@Trott Trott deleted the add-assert branch February 8, 2021 17:53
danielleadams pushed a commit that referenced this pull request Feb 16, 2021
Great effort is taken to keep `util.inspect()` from throwing while
inspecting a linked list or other items that require recursion. It is
likely still possible at this time to cause a throw with prototype
pollution, but that will change soon when the code is modified to use
primordials.

This commit instructs our coverage to not be concerned about not being
able to reach the throwing-an-error code and changes the throw there to
an assert so users will be instructed to open a bug with Node.js should
they manage to cause the code to throw.

PR-URL: #37249
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Antoine du Hamel <[email protected]>
Reviewed-By: Darshan Sen <[email protected]>
This was referenced Feb 16, 2021
targos pushed a commit that referenced this pull request May 1, 2021
Great effort is taken to keep `util.inspect()` from throwing while
inspecting a linked list or other items that require recursion. It is
likely still possible at this time to cause a throw with prototype
pollution, but that will change soon when the code is modified to use
primordials.

This commit instructs our coverage to not be concerned about not being
able to reach the throwing-an-error code and changes the throw there to
an assert so users will be instructed to open a bug with Node.js should
they manage to cause the code to throw.

PR-URL: #37249
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Antoine du Hamel <[email protected]>
Reviewed-By: Darshan Sen <[email protected]>
@danielleadams danielleadams mentioned this pull request May 3, 2021
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6 participants