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Differential D25262

Fix PHP 8.1 "strlen(null)" exceptions block creating a diff in Differential web interface
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Authored by aklapper on May 30 2023, 10:22.

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valerio.bozzolan

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valerio.bozzolan

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O1: Blessed Committers

Maniphest Tasks

T15430: PHP 8.1 "strlen(null)" exceptions block creating a diff in Differential web interface

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rPdd24c94b0741: Fix PHP 8.1 "strlen(null)" exceptions block creating a diff in Differential web…

Summary

strlen() was used in Phabricator to check if a generic value is a non-empty string.
This behavior is deprecated since PHP 8.1. Phorge adopts phutil_nonempty_string() as a replacement.

Note: this may highlight other absurd input values that might be worth correcting
instead of just ignoring. If phutil_nonempty_string() throws an exception in your
instance, report it to Phorge to evaluate and fix that specific corner case.

EXCEPTION: (RuntimeException) strlen(): Passing null to parameter #1 ($string) of type string is deprecated at [<arcanist>/src/error/PhutilErrorHandler.php:261]
arcanist(head=master, ref.master=18554ea76ceb), phorge(head=diffDiff, ref.master=e11c5486c92b, ref.diffDiff=e11c5486c92b)
  #0 <#2> PhutilErrorHandler::handleError(integer, string, string, integer) called at [<phorge>/src/infrastructure/diff/view/PHUIDiffTableOfContentsItemView.php:160]

Closes T15430

Test Plan

After applying these two changes, going to /differential/diff/create/, pasting the content of a diff file into the "Raw Diff" field, and selecting the "Create Diff" button, /differential/diff/1/ rendered correctly in web browser.

Also, install xdebug and try again with coverage mode enabled in your php.ini of your PHP cli.

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Event Timeline

aklapper created this revision.May 30 2023, 10:22

Owners added a reviewer: O1: Blessed Committers.May 30 2023, 10:22

Herald added subscribers: Cigaryno, Matthew, valerio.bozzolan and 2 others. · View Herald TranscriptMay 30 2023, 10:22

aklapper requested review of this revision.May 30 2023, 10:22

Harbormaster completed remote builds in B485: Diff 850.May 30 2023, 10:22

aklapper mentioned this in T15431: PHP 8.1 "preg_match(null)" exception blocks rendering "Create Revision" page in Differential.May 30 2023, 10:34

aklapper mentioned this in D25263: Fix PHP 8.1 "preg_match(null)" exception on "Create Revision" page in Differential when not entering data.May 30 2023, 10:35

aklapper mentioned this in T15432: PHP 8.1 "strlen(null)" exceptions block rendering Differential Revision page.May 30 2023, 10:59

aklapper mentioned this in D25264: Fix some PHP 8.1 "strlen(null)" exceptions on Differential Revision page.May 30 2023, 11:05

valerio.bozzolan edited the test plan for this revision. (Show Details)Jun 2 2023, 18:23

Wow. I discovered coverage.

sudo apt install php-xdebug

Then in my PHP.ini of PHP cli:

xdebug.mode=coverage

And boom, there is coverage.

When enabled, this is a train of characters inside a big string. So indeed this is a string.

Hoping to be useful I will add a small PHP documentation.

Thanks!

sgtm

This revision is now accepted and ready to land.Jun 2 2023, 18:31

add a small PHPDoc (honestly, just to trigger again the Coverage)

Harbormaster completed remote builds in B502: Diff 874.Jun 2 2023, 18:32

Wow! I tested this in production, see the lovely bars on the right about the Coverage. Interesting.

Closed by commit rPdd24c94b0741: Fix PHP 8.1 "strlen(null)" exceptions block creating a diff in Differential web…. · Explain WhyJun 2 2023, 18:40

This revision was automatically updated to reflect the committed changes.

aklapper added a commit: rPdd24c94b0741: Fix PHP 8.1 "strlen(null)" exceptions block creating a diff in Differential web….

aklapper mentioned this in rP44a8a1c408ed: Fix PHP 8.1 "preg_match(null)" exception on "Create Revision" page in….Jun 8 2023, 12:48

aklapper mentioned this in rP25c4f6224d63: Fix some PHP 8.1 "strlen(null)" exceptions on Differential Revision page.

Revision Contents
Changeset List

Path

Size

Packages

src/

infrastructure/

diff/

view/

PHUIDiffTableOfContentsItemView.php

9 lines

O1: Blessed Committers

Diff 875

src/infrastructure/diff/view/PHUIDiffTableOfContentsItemView.php

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