Bug #76451 [Asn->Csd]: Aliases during inheritance type checks affected by opcache

Edit report at https://bugs.php.net/bug.php?id=76451&edit=1 ID: 76451 Updated by: nikic@php.net Reported by: nikic@php.net Summary: Aliases during inheritance type checks affected by opcache -Status: Assigned +Status: Closed Type: Bug Package: Scripting Engine problem PHP Version: master-Git-2018-06-11 (Git) Assigned To: nikic Block user comment: N Private report: N New Comment: Fixed in 7.4 with https://github.com/php/php-src/commit/afec3a9208c2a34762a87cb797f28e7e61c88cca. Previous Comments: ------------------------------------------------------------------------ [2018-10-04 18:13:28] nikic@php.net Related To: Bug #76973 ------------------------------------------------------------------------ [2018-06-11 20:07:35] nikic@php.net Description: ------------ If type-equality checks during inheritance fail on simple string comparison, they fall back to loaded the class entries and comparing those. This allows aliased classes to pass inheritance checks. However, if classes are early-bound, then the alias will not be available if opcache is used, as compilation is isolated. The attached test script will work without opcache and fail with opcache. Test script: --------------- // file1.php <?php class Foo {} class_alias('Foo', 'Bar'); require __DIR__ . '/file2.php'; // file2.php <?php class A { public function test(Foo $foo) {} } class B extends A { public function test(Bar $foo) {} } Expected result: ---------------- No error. Actual result: -------------- Warning: Declaration of B::test(Bar $foo) should be compatible with A::test(Foo $foo) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=76451&edit=1