Problems with PHP 8.4

[smileBeda]

I am running several composer libs locally:

composer global show -t
Changed current directory to /Users/***/.composer
humbug/php-scoper 0.18.15 Prefixes all PHP namespaces in a file or directory.
├──fidry/console ^0.6.10
│  ├──php ^8.2
│  ├──psr/log ^3.0
│  │  └──php >=8.0.0
│  ├──symfony/console ^6.4 || ^7.0
│  │  ├──php >=8.2
│  │  ├──symfony/polyfill-mbstring ~1.0
│  │  │  └──php >=7.2
│  │  ├──symfony/service-contracts ^2.5|^3
│  │  │  ├──php >=8.1
│  │  │  ├──psr/container ^1.1|^2.0
│  │  │  │  └──php >=7.4.0
│  │  │  └──symfony/deprecation-contracts ^2.5|^3
│  │  │     └──php >=8.1
│  │  └──symfony/string ^6.4|^7.0
│  │     ├──php >=8.2
│  │     ├──symfony/polyfill-ctype ~1.8
│  │     │  └──php >=7.2
│  │     ├──symfony/polyfill-intl-grapheme ~1.0
│  │     │  └──php >=7.2
│  │     ├──symfony/polyfill-intl-normalizer ~1.0
│  │     │  └──php >=7.2
│  │     └──symfony/polyfill-mbstring ~1.0
│  │        └──php >=7.2
│  ├──symfony/deprecation-contracts ^3.4
│  │  └──php >=8.1
│  ├──symfony/event-dispatcher-contracts ^2.5 || ^3.0
│  │  ├──php >=8.1
│  │  └──psr/event-dispatcher ^1
│  │     └──php >=7.2.0
│  ├──symfony/service-contracts ^2.5 || ^3.0
│  │  ├──php >=8.1
│  │  ├──psr/container ^1.1|^2.0
│  │  │  └──php >=7.4.0
│  │  └──symfony/deprecation-contracts ^2.5|^3
│  │     └──php >=8.1
│  ├──thecodingmachine/safe ^2.0
│  │  └──php ^8.0
│  └──webmozart/assert ^1.11
│     ├──ext-ctype *
│     │  └──php >=7.2
│     └──php ^7.2 || ^8.0
├──fidry/filesystem ^1.1
│  ├──php ^8.1
│  ├──symfony/filesystem ^6.4 || ^7.0
│  │  ├──php >=8.2
│  │  ├──symfony/polyfill-ctype ~1.8
│  │  │  └──php >=7.2
│  │  └──symfony/polyfill-mbstring ~1.8
│  │     └──php >=7.2
│  └──thecodingmachine/safe ^2.0
│     └──php ^8.0
├──jetbrains/phpstorm-stubs ^2024.1
├──nikic/php-parser ^5.0
│  ├──ext-ctype *
│  │  └──php >=7.2
│  ├──ext-json *
│  ├──ext-tokenizer *
│  └──php >=7.4
├──php ^8.2
├──symfony/console ^6.4 || ^7.0
│  ├──php >=8.2
│  ├──symfony/polyfill-mbstring ~1.0
│  │  └──php >=7.2
│  ├──symfony/service-contracts ^2.5|^3
│  │  ├──php >=8.1
│  │  ├──psr/container ^1.1|^2.0
│  │  │  └──php >=7.4.0
│  │  └──symfony/deprecation-contracts ^2.5|^3
│  │     └──php >=8.1
│  └──symfony/string ^6.4|^7.0
│     ├──php >=8.2
│     ├──symfony/polyfill-ctype ~1.8
│     │  └──php >=7.2
│     ├──symfony/polyfill-intl-grapheme ~1.0
│     │  └──php >=7.2
│     ├──symfony/polyfill-intl-normalizer ~1.0
│     │  └──php >=7.2
│     └──symfony/polyfill-mbstring ~1.0
│        └──php >=7.2
├──symfony/filesystem ^6.4 || ^7.0
│  ├──php >=8.2
│  ├──symfony/polyfill-ctype ~1.8
│  │  └──php >=7.2
│  └──symfony/polyfill-mbstring ~1.8
│     └──php >=7.2
├──symfony/finder ^6.4 || ^7.0
│  └──php >=8.2
├──symfony/var-dumper ^7.1
│  ├──php >=8.2
│  └──symfony/polyfill-mbstring ~1.0
│     └──php >=7.2
└──thecodingmachine/safe ^2.0
   └──php ^8.0
wp-coding-standards/wpcs 3.1.0 PHP_CodeSniffer rules (sniffs) to enforce WordPress coding conventions
├──ext-filter *
├──ext-libxml *
├──ext-tokenizer *
├──ext-xmlreader *
├──php >=5.4
├──phpcsstandards/phpcsextra ^1.2.1
│  ├──php >=5.4
│  ├──phpcsstandards/phpcsutils ^1.0.9
│  │  ├──dealerdirect/phpcodesniffer-composer-installer ^0.4.1 || ^0.5 || ^0.6.2 || ^0.7 || ^1.0
│  │  │  ├──composer-plugin-api ^1.0 || ^2.0
│  │  │  ├──php >=5.4
│  │  │  └──squizlabs/php_codesniffer ^2.0 || ^3.1.0 || ^4.0
│  │  │     ├──ext-simplexml *
│  │  │     ├──ext-tokenizer *
│  │  │     ├──ext-xmlwriter *
│  │  │     └──php >=5.4.0
│  │  ├──php >=5.4
│  │  └──squizlabs/php_codesniffer ^3.10.0 || 4.0.x-dev@dev
│  │     ├──ext-simplexml *
│  │     ├──ext-tokenizer *
│  │     ├──ext-xmlwriter *
│  │     └──php >=5.4.0
│  └──squizlabs/php_codesniffer ^3.8.0
│     ├──ext-simplexml *
│     ├──ext-tokenizer *
│     ├──ext-xmlwriter *
│     └──php >=5.4.0
├──phpcsstandards/phpcsutils ^1.0.10
│  ├──dealerdirect/phpcodesniffer-composer-installer ^0.4.1 || ^0.5 || ^0.6.2 || ^0.7 || ^1.0
│  │  ├──composer-plugin-api ^1.0 || ^2.0
│  │  ├──php >=5.4
│  │  └──squizlabs/php_codesniffer ^2.0 || ^3.1.0 || ^4.0
│  │     ├──ext-simplexml *
│  │     ├──ext-tokenizer *
│  │     ├──ext-xmlwriter *
│  │     └──php >=5.4.0
│  ├──php >=5.4
│  └──squizlabs/php_codesniffer ^3.10.0 || 4.0.x-dev@dev
│     ├──ext-simplexml *
│     ├──ext-tokenizer *
│     ├──ext-xmlwriter *
│     └──php >=5.4.0
└──squizlabs/php_codesniffer ^3.9.0
   ├──ext-simplexml *
   ├──ext-tokenizer *
   ├──ext-xmlwriter *
   └──php >=5.4.0

When I run WPCS in my Visual Code editor since a while it fails and throws:

Deprecated: Safe\gmdate(): Implicitly marking parameter $timestamp as nullable is deprecated, the explicit nullable type must be used instead in /Users/***/.composer/vendor/thecodingmachine/safe/deprecated/datetime.php on line 24 

(and other similar ones)

I narrowed down that the lib thecodingmachine is used only by PHP Scoper and PHP 8.4
When I run PHP 8.3 locally all is fine.

Is this known, and is it even the right place to report it? I figured I start here and work my pat up or downstream depending on the feedback I get...
Fact is that under current circumstances the PHP Scoper isn't compatible with latest stable PHP.

[sebastianbergmann]

Is this known, and is it even the right place to report it?

Yes, this is known: #1092.