[pull] master from php:master#1004
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…ing (#22221) Inheritance cache dependencies are collected while a class is being linked. During delayed variance resolution, autoloading can re-enter class linking and use the current class while it is only nearly linked. If that class is persisted in the inheritance cache, a later request can replay dependencies in a different order and observe an incomplete hierarchy. When delayed autoloading causes the class to be used through the unlinked/nearly-linked lookup path, mark it as non-cacheable after load_delayed_classes() returns. This also catches cases where the class's variance obligations were resolved reentrantly, before the direct resolve_delayed_variance_obligations() call would run. If dependency tracking already allocated a temporary dependency table, free it when cache insertion is skipped. Restrict this cleanup to classes that entered inheritance-cache construction, because otherwise inheritance_cache is not a dependency table and may contain unrelated or uninitialized data. This preserves inheritance-cache use for delayed-variance classes that did not participate in this reentrant cycle. With the invalid cache entry prevented, unlinked_instanceof() can keep using instanceof_function() for linked classes.
* PHP-8.5: ext/soap: ignore empty SOAPAction header during server dispatch.
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