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Charset: Fix broken test for utf8_decode() fallback.#12147

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dmsnell:compat/fix-broken-test-for-utf8-decode
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Charset: Fix broken test for utf8_decode() fallback.#12147
dmsnell wants to merge 1 commit into
WordPress:trunkfrom
dmsnell:compat/fix-broken-test-for-utf8-decode

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@dmsnell

@dmsnell dmsnell commented Jun 10, 2026

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Trac ticket: Core-65372

Detected while fuzz-testing the UTF-8 handling code, this defect meant that the tests were verifying the wrong behavior. Namely, they verified a stringification of ASCII digits, which always converted plainly, when they were meant to test handling of invalid UTF-8 sequences.

This patch fixes the test by calling chr() on the byte values before concatenating into a big string.

Follow-up to: [60950].

Detected while fuzz-testing the UTF-8 handling code, this defect meant
that the tests were verifying the wrong behavior. Namely, they verified
a stringification of ASCII digits, which always converted plainly, when
they were meant to test handling of invalid UTF-8 sequences.

This patch fixes the test by calling `chr()` on the byte values before
concatenating into a big string.

Follow-up to: [60950].

Co-Authored-By: Jon Surrell <jonsurrell@git.wordpress.org>
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Props dmsnell.

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@dmsnell dmsnell force-pushed the compat/fix-broken-test-for-utf8-decode branch from d909d11 to 372919a Compare June 10, 2026 23:30
pento pushed a commit that referenced this pull request Jun 10, 2026
Detected while fuzz-testing the UTF-8 handling code, this defect meant that the tests were verifying the wrong behavior. Namely, they verified a stringification of ASCII digits, which always converted plainly, when they were meant to test handling of invalid UTF-8 sequences.

This patch fixes the test by calling `chr()` on the byte values before concatenating into a big string.

Developed in: #12147
Discussed in: https://core.trac.wordpress.org/ticket/65372

Props dmsnell, jonsurrell.
Follow-up to: [60950].
See #65372.


git-svn-id: https://develop.svn.wordpress.org/trunk@62484 602fd350-edb4-49c9-b593-d223f7449a82
markjaquith pushed a commit to markjaquith/WordPress that referenced this pull request Jun 10, 2026
Detected while fuzz-testing the UTF-8 handling code, this defect meant that the tests were verifying the wrong behavior. Namely, they verified a stringification of ASCII digits, which always converted plainly, when they were meant to test handling of invalid UTF-8 sequences.

This patch fixes the test by calling `chr()` on the byte values before concatenating into a big string.

Developed in: WordPress/wordpress-develop#12147
Discussed in: https://core.trac.wordpress.org/ticket/65372

Props dmsnell, jonsurrell.
Follow-up to: [60950].
See #65372.

Built from https://develop.svn.wordpress.org/trunk@62484


git-svn-id: http://core.svn.wordpress.org/trunk@61765 1a063a9b-81f0-0310-95a4-ce76da25c4cd
@dmsnell

dmsnell commented Jun 10, 2026

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Merged in [62484]
6c363d4

@dmsnell dmsnell closed this Jun 10, 2026
@dmsnell dmsnell deleted the compat/fix-broken-test-for-utf8-decode branch June 10, 2026 23:50
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