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<?php class toStr { private $str; public function __construct( $str ) { $this->str = $str; } public function __toString() { return $this->str; } } $a = array(); $a[ new toStr('hi') ] = 'there';
Output for git.master, git.master_jit
Fatal error: Uncaught TypeError: Illegal offset type in /in/MRCuk:16 Stack trace: #0 {main} thrown in /in/MRCuk on line 16
Process exited with code 255.

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