[php-src] Issue #12255: Tracing JIT triggers wrong Array to string conversion in Psalm

Issue: https://github.com/php/php-src/issues/12255 Author: danog ### Description Running the following command inside of https://github.com/vimeo/psalm/ @ 7428e49b115a2a837aa29cf0fafd0ca902fe2457, only when tracing JIT is enabled with the config specified in https://github.com/php/php-src/pull/12250, triggers an Array to string conversion error in a place that makes no sense: ``` PSALM_ALLOW_XDEBUG=1 ./psalm --no-cache --threads=1 ``` Result: ``` ░░░░░░░Uncaught RuntimeException: PHP Error: Array to string conversion in /home/daniil/repos/psalm/src/Psalm/Type/Atomic/TGenericObject.php:79 for command with CLI args "./psalm --no-cache --threads=1" in /home/daniil/repos/psalm/src/Psalm/Internal/ErrorHandler.php:75 ``` The line that triggers the issue: ``` return $this->value . '<' . substr($s, 0, -2) . '>' . $extra_types; ``` The code around it: ``` public function getKey(bool $include_extra = true): string { $s = ''; foreach ($this->type_params as $type_param) { $s .= $type_param->getKey() . ', '; } $extra_types = ''; if ($include_extra && $this->extra_types) { $extra_types = '&' . implode('&', $this->extra_types); } return $this->value . '<' . substr($s, 0, -2) . '>' . $extra_types; } ``` ### PHP Version PHP 8.2.10 ### Operating System Arch linux