Bug #75809 [Opn->Dup]: self type-hint in anonymous function in trait is wrong on successive calls

Edit report at https://bugs.php.net/bug.php?id=75809&edit=1 ID: 75809 Updated by: pmmaga@php.net Reported by: vanleeuwen dot jarno at gmail dot com Summary: self type-hint in anonymous function in trait is wrong on successive calls -Status: Open +Status: Duplicate Type: Bug Package: Class/Object related Operating System: Any PHP Version: 7.0.27 Block user comment: N Private report: N New Comment: Thanks for the confirmation. Previous Comments: ------------------------------------------------------------------------ [2018-01-12 11:12:19] vanleeuwen dot jarno at gmail dot com Yes, I can confirm this is the same bug. Sorry for the duplicate bug report. ------------------------------------------------------------------------ [2018-01-12 11:07:48] pmmaga@php.net Can you confirm that this is a duplicate of https://bugs.php.net/bug.php?id=75079 ? ------------------------------------------------------------------------ [2018-01-12 10:53:00] vanleeuwen dot jarno at gmail dot com Description: ------------ Starting from PHP 7.0, the self type-hint in an anonymous function within a trait refers back to the first class that created/used the anonymous function. The bug occurs in PHP 7.0, 7.1 and 7.2. This was no problem in PHP 5.6 (https://3v4l.org/oKeSG). In the example below, classes Foo and Bar do not share anything except for the trait. The anonymous function is created within the local scope of a non-static method, so should not be shared among different objects implementing this trait. Test script: --------------- <?php trait Feature { public function getClass() { $func = function (self $instance) { print get_class($instance); }; $func($this); } } class Foo { use Feature; } class Bar { use Feature; } (new Foo)->getClass(); (new Bar)->getClass(); Expected result: ---------------- FooBar Actual result: -------------- Foo Fatal error: Uncaught TypeError: Argument 1 passed to Bar::{closure}() must be an instance of Foo, instance of Bar given, called in /in/EafpA on line 24 and defined in /in/EafpA:17 Stack trace: #0 /in/EafpA(24): Bar->{closure}(Object(Bar)) #1 /in/EafpA(54): Bar->execute() #2 {main} thrown in /in/EafpA on line 17 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=75809&edit=1