Readonly class compatibility

[JanTvrdik]

Feature request

PHPStan currently does not report error, when readonly class extends non-readonly class and vice-versa, which is not allowed by PHP.

readonly class A
{
}

class B extends A // Non-readonly class B cannot extend readonly class A
{
}

class A
{
}

readonly class B extends A // Readonly class B cannot extend non-readonly class A
{
}

Did PHPStan help you today? Did it make you happy in any way?

No response

[ondrejmirtes]

Implemented: phpstan/phpstan-src@986cbdf

[github-actions]

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